抗浮设计中抗拔构件与地下结构共同作用分析  

ANALYSIS ON INTERACTION BETWEEN ANTI PULL-OUT COMPONENT AND UNDERGROUND STRUCTURE IN ANTI-FLOATING DESIGN

作　　者：白俊峰 刘新龙[1] 付旭 李茜 封焱杰 Bai Jun-feng;Liu Xin-long;Fu Xu;Li Qian;Feng Yan-jie

机构地区：[1]西安工业大学建筑工程学院,西安710021 [2]北华航天工业学院建筑工程学院,河北廊坊065000 [3]北京建筑大学土木与交通工程学院,北京102600

出　　处：《建筑技术开发》2022年第3期7-11,共5页Building Technology Development

基　　金：河北省建设科技研究指导性计划项目(20182051);廊坊市科技技术研究与发展计划自筹经费项目(2020011053)。

摘　　要：为保证抗浮设计更加安全与经济,通过文献研究法和对比分析法研究了抗拔桩/抗浮锚杆等抗拔构件与地下结构的相互作用。结果表明:(1)在进行抗浮设计时,如果考虑抗拔构件与底板的共同作用,可有限度地减少底板配筋和厚度;(2)不同的抗浮设计相关规范对共同作用的规定不同或没有相关规定;(3)目前国内主要在锚杆–底板、抗拔桩/抗浮锚杆–上部结构、上部结构–筏形基础、底板–桩–土、上部结构–底板–桩等方面对共同作用进行了研究;(4)在考虑抗拔构件与地下结构共同作用时,通过有限元软件分析底板弯矩情况,可优化抗浮锚杆的布置、底板配筋、底板刚度和柱距,进而减少工程造价。可见,对于抗拔构件与地下结构的共同作用在规范标准的制定、其他因素的影响及不同构件组合等方面还需进一步研究。In order to ensure the safety and economy of anti-floating design,the interaction between anti pull-out components such as anti pull-out piles and anti pull-out anchors and underground structures is studied by literature research and comparative analysis.The results show that:(1)when anti-floating design is carried out,the reinforcement and thickness of the bottom plate can be reduced to a certain extent if the interaction between the anti pull-out component and the bottom plate is considered;(2)different anti-floating design specifications have different or no relevant regulations on the joint action;(3)at present,the interaction between anchor and bottom plate,anti pull-out pile/anti pull-out anchor and superstructure,superstructure and raft foundation,bottom plate and pile-soil,superstructure and bottom plate and pile is mainly studied in China;(4)considering the interaction between anti pull-out components and underground structure,the bending moment of bottom plate is analyzed by finite element software,which can optimize the arrangement of anti pull-out anchor bolt,reinforcement of bottom plate,stiffness of bottom plate and column distance,thus reducing the project cost.It can be seen that the interaction between anti pull-out components and underground structures needs to be further studied in the formulation of standards,the influence of other factors and different component combinations.

关 键 词：地下结构 抗拔桩 抗浮锚杆 

分 类 号：TU93[建筑科学—结构工程] TU476