Journal of building engineering最新文献

{"title":"Interlayer cohesion in 3D printed concrete: The role of width-to-height ratio in modulating transport properties and pore structure","authors":"","doi":"10.1016/j.jobe.2024.111009","DOIUrl":"10.1016/j.jobe.2024.111009","url":null,"abstract":"<div><div>Due to the extrusion-based printing and layer-to-layer deposition characteristics, the interlayer cohesion of 3D printed concrete is highly sensitive to the geometry of the printed layers, significantly influencing both mechanical performance and long-term durability. In this study, the width-to-height (W/H) ratio was employed as a geometric parameter to explore its relationship with interlayer transport and pore morphology. The research began by optimizing mix proportions through fluidity and printability tests. Subsequently, chloride ion permeation, mercury intrusion porosimetry, and micro-CT were used to analyze interfacial transport and pore distribution, revealing the influence of the W/H ratio on these properties. The results demonstrate that the W/H ratio plays a crucial role in densification and interfacial defect formation in 3D printed concrete. While the extrusion process enhances matrix compaction, a higher W/H ratio generally promotes stronger interlayer cohesion and reduces chloride ion permeability. However, an excessively large W/H ratio, especially when coupled with air entrainment, can introduce defects and increase porosity at the layer interfaces. The study concludes that maintaining a W/H ratio between 1.5 and 2.0 effectively strengthens interlayer cohesion. These results offer valuable theoretical insights and technical support for the design and application of 3D printed concrete materials.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of behavior and uniaxial compression failure modes in ungrouted hollow concrete block masonry and their implication in design expressions","authors":"","doi":"10.1016/j.jobe.2024.111048","DOIUrl":"10.1016/j.jobe.2024.111048","url":null,"abstract":"<div><div>In this study, new analytical expressions for the design and revision of ungrouted masonry of hollow concrete blocks under gravitational effects were developed. These expressions can predict the compressive strength and modulus of elasticity for full and face-shell mortar beddings. A trend chart was generated, considering various modes of failure for different strength relationships between blocks and mortar. The study revealed that the main international masonry design codes underestimate the compression resistance of masonry when using weak mortar in combination with full mortar bedding. Results obtained using the Finite Element Method indicated that the optimal compression strength ranges were: 62–70 % for weaker mortar than the block with full mortar bedding; 152 % for block weaker than the mortar with full mortar bedding; and close to 67 % with face-shell bedding mortar.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An effective PID control method of air conditioning system for electric drive workshop based on IBK-IFNN two-stage optimization","authors":"","doi":"10.1016/j.jobe.2024.111028","DOIUrl":"10.1016/j.jobe.2024.111028","url":null,"abstract":"<div><div>A proportional-integral-derivative (PID) controller is a commonly used method for controlling air conditioning systems in electric drive workshops. However, traditional PID controllers have several drawbacks, such as poor control performances, weak adaptive abilities, and bad anti-interference capabilities, which render them unsuitable for the strict environmental requirements of electric drive workshops. Therefore, to compensate for the above deficiencies, first, this study presents a two-stage PID optimization control method, which includes optimizing the fuzzy neural network in the first stage and optimizing the PID controller parameters in the second stage. After that, a two-stage optimization algorithm based on an improved black-winged kite with an improved fuzzy neural network (IBK-IFNN) is designed to adapt the proposed control model. Finally, co-simulation experiments and applications are conducted in the electric drive workshop of an automobile manufacturer to validate the effectiveness of the proposed method. The results demonstrate that the proposed method not only improves the convergence speed and search capability of the IBK-FNN algorithm but also outperforms other controllers in terms of its control performance, adaptive ability, anti-interference capability, and comprehensive score.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Understanding human-obstacle interaction dynamics on staircases: Implications for emergency evacuation and fire safety in high-rise buildings","authors":"","doi":"10.1016/j.jobe.2024.111082","DOIUrl":"10.1016/j.jobe.2024.111082","url":null,"abstract":"<div><div>Interactions between system components, including human-obstacle, human-building, human-robot, and human-human, significantly impact public safety, system efficiency, and functionality. A deeper understanding of these systems is essential to enhance their resilience and effectiveness. Despite the significance of these interactions, empirical research is limited, particularly regarding behavioral mechanisms when interacting with obstacles on stairways. Our study examines the evacuation behavior of 90 evacuees on the staircase of a high-rise building under different temporary obstacle conditions to understand how key factors affect decision-making and motion behavior during stairway descent. The experiments considered obstacle shapes as control variables and analyzed evacuation time, inner and outer stair route choices, regional speed fluctuations, velocity-relative displacement, evacuation efficiency, and biomechanical analysis of occupants’ comfort. Results show that larger obstacle shapes, increased evacuation urgency time, and closer proximity to the wall lead to a higher proportion of the splitting to merging state before and after obstacle interaction. A strong inner stair route preference emerges in no-obstacle conditions, with significant mean speed differences in downward movements when encountering temporary obstacle. Three phases of average speed variations are observed: deceleration, acceleration, and continued deceleration for the outer route; and deceleration followed by uniform speed for the inner route. A method was developed to calculate regional speed fluctuation using average speeds from trajectories. Comfort analysis revealed that temporary obstacle on building stairways significantly impact safe evacuation. Overall, these findings enhance the understanding of crowd dynamics in high-rise building emergency evacuations, with implications for model development, architectural design, building operations, emergency preparedness, behavioral cognition, and fire safety.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimum mechanical properties of repair mortar containing hybrid fibers using the Taguchi method and analysis of variance","authors":"","doi":"10.1016/j.jobe.2024.111049","DOIUrl":"10.1016/j.jobe.2024.111049","url":null,"abstract":"<div><div>In this study, a hybrid fiber containing micro steel fiber (MSF), polyester fiber (PEF) and glass fiber (GF) was employed to improve a hardened properties of repair mortar. The design of experiments for the repair mortar was based on Taguchi method and included hybrid fiber-MSF, PEF and GF- at three levels, along with additional parameters such as the binder-to-sand ratio, silica fume (SF) content, latex content and the water-to-binder ratio at different levels. The compressive strength, flexural strength, and shear bond strength were determined to study the effect of the hybrid fibres on the properties of repair mortar. The results of experimental tests were optimized through the analysis of variance (ANOVA). The findings indicated that hybridization of 1.0%MSF +0.25%PEF +0.25%GF as the optimal combination significantly improved the compressive strength and also enhanced the flexural and shear bond strength of the repair mortar.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insights into self-healing capacity of cement matrix containing high-efficiency bacteria under challenging conditions","authors":"","doi":"10.1016/j.jobe.2024.111094","DOIUrl":"10.1016/j.jobe.2024.111094","url":null,"abstract":"<div><div>This study provides novel insights into enhancing the self-healing capacity of cement matrix through the integration of natural <em>Bacillus</em> isolates derived from leached and calcified soils. The challenging and highly alkaline environment of cement matrix typically impedes bacterial activity, making the successful application of these bacteria in such conditions particularly significant. In this research, <em>Bacillus licheniformis-Bacillus muralis</em> co-culture was identified as highly effective in inducing calcium carbonate precipitation, a critical factor for self-healing. The selected co-cultured bacterial activity resulted in the formation of up to 2.885 g/100 mL of CaCO₃, while the co-culture's effectiveness was demonstrated by the complete repair of a 0.5 mm crack within 96 h demonstrating a repair rate of approximately 0.125 mm per 24 h. Furthermore, the study showed that the bacterial co-culture could survive and remain active under varying environmental conditions, including wet-dry cycles and extreme pH levels, which are typical of construction sites. This rapid crack closure, achieved without additional protective measures for the bacteria, marks a significant advancement in the application of microbial co-cultures for enhancing the durability of cement-based materials. The study also provides a detailed analysis of bacterial behavior under various environmental stresses typical of construction sites, highlighting the robustness and practical applicability of this biotechnological approach. As the long-term output, the obtained results represent a substantial advancement in the practical application of microbial co-cultures for self-healing effect of cement-based materials.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flexural tensile behaviour of alkali-activated slag-based concrete and Portland cement-based concrete incorporating single and multiple hooked-end steel fibres","authors":"","doi":"10.1016/j.jobe.2024.111090","DOIUrl":"10.1016/j.jobe.2024.111090","url":null,"abstract":"&lt;div&gt;&lt;div&gt;In this study, three-point bending tests on notched beams according to EN 14651 have been performed to evaluate the flexural post-cracking behaviour of alkali-activated slag-based concrete (AASC) and Portland cement-based concrete (PCC) incorporating single (3D) and multiple (4D, 5D) hooked-end steel fibres in different volume fractions up to 0.75 %. According to the experimental results, the post-cracking residual flexural strength increases with the increase in the fibre volume fraction for each fibre and concrete matrix type. AASC mixes incorporating 3D and 4D fibres show higher values of residual flexural strength for the same crack opening than PCC mixes with the same fibre type and dosage. Only for the mixes incorporating 5D fibres, steel fibre-reinforced PCC (SFRPCC) mixes outperform steel fibre-reinforced AASC (SFRAASC) mixes in terms of post-cracking behaviour. According to EN 14651, the values of the residual strengths &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;msub&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mrow&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; and &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;msub&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mrow&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt;, corresponding to a crack mouth opening displacement (CMOD) of 0.5 mm and 2.5 mm, respectively, and their corresponding characteristic values &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;msub&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mrow&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;mi&gt;k&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; and &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;msub&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mrow&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;mi&gt;k&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt;, respectively, can be derived from the experimental load-CMOD curves. Following the &lt;em&gt;fib&lt;/em&gt; Model Code 2020, each mix can then be classified according to the values of &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;msub&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mrow&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;mi&gt;k&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; and the &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;msub&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mrow&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;mi&gt;k&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;msub&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mrow&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;mi&gt;k&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; ratio. As a result, empirical models have been developed for SFRPCC to predict the values of &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;msub&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mrow&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; and &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;msub&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mrow&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; and the applicability of such models to SFRAASC is evaluated in this study. Once the values of &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;msub&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mrow&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;mi&gt;k&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; and &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;msub&gt;&lt;mi&gt;f&lt;/mi&gt;&lt;mrow&gt;&lt;mi&gt;R&lt;/mi&gt;&lt;mn&gt;3&lt;/mn&gt;&lt;mi&gt;k&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt; are known, tensile constitutive models can be derived according to the &lt;em&gt;fib&lt;/em&gt; Model Code 2020 and used as input parameters for finite element modelling. In this study, the accuracy of the code-based constitutive model to predict the flexural behaviour of SFRAASC and SFRPCC is evaluated using the concrete damage plasticity (CDP) model available in ABAQUS. The numerical model based on the tensile stress-strain curve ","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fire resistance of 3D printed ultra-high performance concrete panels","authors":"","doi":"10.1016/j.jobe.2024.111100","DOIUrl":"10.1016/j.jobe.2024.111100","url":null,"abstract":"<div><div>Ultra-high performance fiber-reinforced concrete (UHPFRC) is highly suitable for 3D concrete printing (3DCP) due to its high flexural strength, thereby reducing the need for reinforcements. However, UHPFRC is susceptible to spalling under exposure to fire, limiting its application as structural members. In this paper, the effect of 3D printing process on the fire behavior of UHPFRC is studied, benchmarking against mold-cast panels. The insulation, integrity, and structural adequacy of the panels are investigated using the heat transfer mechanisms, failure modes, and the post-fire compressive strength of the panels, respectively. The presence of interlayers reduced the spalling of UHPFRC under fire and improved the structural integrity of 3D printed specimens compared to mold-cast specimens. Further, the addition of 0.5 % polypropylene (PP) fibers eliminated the interlayer delamination and spalling in 3D printed UHPFRC panels. Similarly, 3D printed panels showed improved structural adequacy than mold-cast specimens. The residual compressive strength of 3D printed UHPFRC panels after being exposed to fire was observed to be above 50 % of the initial mean compressive strength. However, the insulation property of 3D printed panels was reduced compared to that of the mold-cast counterparts due to the high rate of heat transfer via the porous interlayers. The addition of PP fibers improved the insulation resistance of the interlayer region and surface of the 3D printed panels. The strength anisotropy of the 3D printed UHPFRC reduced significantly following the fire exposure. Further, the thermal bowing of 3D printed panels was higher with an increased dosage of PP fibers due to the increase in the thermal strain of UHPFRC. Therefore, adequate care must be given in the design of 3D printed structures for potential fire resistant wall, slab, and façade elements.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microbial self-healing cement-based materials co-reinforced by Mg2+: Using recycled aggregates as carriers","authors":"","doi":"10.1016/j.jobe.2024.111091","DOIUrl":"10.1016/j.jobe.2024.111091","url":null,"abstract":"<div><div>Microbial self-healing cementitious materials have attracted widespread attention due to their targeted repair of cracks, but their practical application is limited by cost. In this study, self-healing mortar was prepared using recycled concrete fine aggregate as a cementitious material to investigate the effect of magnesium ions on crack repair, to explore the compatibility of self-healing components and cement, and to assess the cost and environmental impact of this self-healing mortar. The results showed that the mineralization efficiency was the highest at 31.1 % with a Ca/Mg molar ratio of 3, and the 28 d crack repair rate reached 97.8 %; yeast and peptones in the self-repairing system slowed down the rate of cement hydration, whereas magnesium chloride and calcium lactate facilitated the hydration reaction. The use of recycled concrete fine aggregate (RCA) reduces the cost of the self-repairing material and the CO₂ emission, and improves the application of microbial self-healing cementitious materials potential.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seismic experiment and performance analysis on embedded optimized steel plate-reinforced concrete composite shear wall under multi-dimensional loading","authors":"","doi":"10.1016/j.jobe.2024.111087","DOIUrl":"10.1016/j.jobe.2024.111087","url":null,"abstract":"<div><div>In order to investigate the seismic performance of reinforced concrete shear walls under multi-dimensional loading mode and its effect on performance improvement, an embedded optimized steel plate-reinforced concrete composite shear wall is proposed. Based on the design principle that the shear wall could adequately bear multi-dimensional loading and the embedded steel plate could reach the full stress state, the X-shaped optimized steel plate (for in-plane loading mode) and the triangular optimized steel plate (for out-of-plane loading mode) are determined using different optimization methods. The combination scheme of these two plates is utilized in the oblique loading mode. Quasi-static loading tests are conducted on eight typical shear wall specimens, and performance parameters such as hysteresis curve, skeleton curve, ductility, stiffness degradation, strain evolution, and damage evaluation of the specimens are compared and analyzed. In addition, variable parameter analysis is performed using finite element software to compare the strain distribution state of each steel plate. The results indicate that the embedded optimized steel plate-reinforced concrete composite shear wall structure exhibits higher bearing capacity, greater deformation capacity, and superior energy dissipation capacity under different loading angles compared to the tradition reinforced concrete shear walls. This composite structure can provide greater lateral stiffness, and the optimized steel plate can reach the full stress state at all loading angles, effectively reducing the damage of steel bars and concrete. These findings offer a foundation for the study of seismic performance and performance improvement methods for shear wall structures under multi-dimensional earthquake action.</div></div>","PeriodicalId":15064,"journal":{"name":"Journal of building engineering","volume":null,"pages":null},"PeriodicalIF":6.7,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}