桩伴侣与基桩抗震的概念设计  

Pile Partner and the Conceptual Earthquake-resistant Design of Foundation Pile

作　　者：薛江炜[1,2] 葛忻声[1] 蔡景珞[1,3] 杨勇[1,4] 

机构地区：[1]太原理工大学建筑工程学院,山西太原030024 [2]太原市住房与城乡建设委员会,山西太原030009 [3]华北科技学院,河北三河065201 [4]深圳市特发地产有限公司,广东深圳518000

出　　处：《工程抗震与加固改造》2013年第4期87-92,86,共7页Earthquake Resistant Engineering and Retrofitting

摘　　要：地下室外墙、承台侧壁等侧向构件承担水平荷载具有很大的不确定性,常规采用的低承台桩基有可能承受较大的甚至导致破坏的水平力,建议用桩伴侣改善传统基桩的构造形式,特别是对于承台与桩间土摩擦力小或者桩身范围地基土模量低的两类状况。在罕遇地震时,作为抗震概念设计的耗能构件,首先牺牲伴侣,避免或延迟桩头的破坏;复合地基如果设计不当会破坏或削弱褥垫层隔震的效果,可在伴侣与桩之间预留缓冲空间。It is uncertain that the lateral components such as basement wall and cap side wall bearing horizontal load,so the conventional pile foundation with low cap might endure lateral force that is larger,and even cause its damage.The applying of pile partner to improve traditional foundation pile structure form is put for ward,especially when there is few frictional force between pile cap and soil,or the soil modulus is small.The partner can be component for anti-earthquake concept design under rare earthquake action,pile partner may be sacrificed firstly to keep pile perform well.The improper design of composite foundation will destroy or weaken the isolation effect of pillow,and can be solved by reserving buffer space between pile and partner.

关 键 词：桩伴侣 基桩抗震概念设计 牺牲伴侣 褥垫层 

分 类 号：TU473.1[建筑科学—结构工程]