采用现场直剪试验,研究矮寨悬索大桥锚碇基岩与混凝土胶结面的抗剪强度.根据试验结果,获得了锚碇混凝土与基岩直剪试验时的剪应力-应变关系曲线,得到了吉首岸和茶洞岸锚碇的抗剪强度参数的c,ψ值,为矮寨大桥锚碇的设计和施工提供了依据,可为今后类似工程提供借鉴.%The shear strength parameters of the contacting surface between bedrock and anchor concrete are obtained through in - situ direct shear test at the Aizhai suspension bridge. According to the testing results, the curves of shear stress versus displacement under different normal stresses were obtained, at the same time, the shear strength parameters of c and φ are suggested for the contacting surfaces between concrete and slight weathered rocks on the anchor base at the side of Chadong, and the shear strength between the weak structural surface of the bed rock at the side of Jishou was also presented. The test results can provide important references to design and construction of concrete anchor. This study provides reference to construct and design for other similar projects.
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