Behaviour of joints containing clay infill under constant normal stiffness, with and without bolting

IF 0.3 Q4 ENGINEERING, GEOLOGICAL Geotechnical Engineering Pub Date : 2001-10-01 DOI:10.1680/GENG.2001.149.4.259
B. Indraratna, N. Aziz, A. Dey
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引用次数: 12

Abstract

The shear behaviour of bolted and non-bolted joints containing infill material was studied under the constant normal stiffness condition. More than 40 sawtooth-shaped samples having an asperity angle of 18·5° were tested. The shear behaviour of bolted and non-bolted joints containing infill material, up to 7·5 mm in thickness, was studied under various initial normal stress levels between 0·13 and 3·25 MPa, at a constant strain rate of 0·5 mm/min and a constant stiffness of 8·5 kN/mm. Significant reduction in shear strength was observed when the joint contained a layer of clay infill of 1·5 mm. Bolting contributed to increasing the strength and stiffness of the joint composite, except at large normal stress levels and at high infill thickness. The dilation and overall friction angle for bolted and non-bolted joints were also compared along with stress profiles. At high infill thickness, the shear behaviour under both constant normal load (CNL) and constant normal stiffness (CNS) conditions was found to be...
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含粘土填充物的节点在固定法向刚度下的行为,有和没有螺栓
研究了含填充物的螺栓连接和非螺栓连接在恒刚度条件下的抗剪性能。测试了40多个锯齿形试样,其粗糙角为18.5°。在恒定应变速率为0.5 mm/min、恒定刚度为8.5 kN/mm的初始法向应力水平为0.13 ~ 3.25 MPa的情况下,研究了厚度达7.5 mm的螺栓连接和非螺栓连接的剪切行为。当节理中充填1·5 mm的粘土层时,节理抗剪强度显著降低。螺栓连接有助于提高接头复合材料的强度和刚度,但在大的正常应力水平和高填充厚度时除外。比较了螺栓连接和非螺栓连接的膨胀角和总摩擦角以及应力分布。在高填土厚度条件下,等法向载荷和等法向刚度条件下的剪切性能都是相同的。
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来源期刊
Geotechnical Engineering
Geotechnical Engineering ENGINEERING, GEOLOGICAL-
CiteScore
0.50
自引率
0.00%
发文量
0
期刊介绍: The objectives of the Association shall be the promotion of co-operation among geotechnical societies in SE Asia; and the assistance to member societies who have limited number of members. Now there is only one combined web titled: AGSSEA-SEAGS. SEAGS & AGSSEA encourage the submission of scholarly and practice-oriented articles to its journal. The journal is published quarterly. Both sponsors of the journal, the Southeast Asian Geotechnical Society and the Association of Geotechnical Societies in Southeast Asia, promote the ideals and goals of the International Society of Soil Mechanics and Geotechhnical Engineering in fostering communications, developing insights and enabling the advancement of the geotechnical engineering discipline.
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