建筑施工顺序对基坑支护结构受力特性的影响分析

Analysis of the Influence of Construction Sequence on the Stress Characteristics of Foundation Pit Support Structure

为研究施工顺序对基坑桩锚支护结构受力的影响,以某深基坑工程为例,对两种不同施工顺序下桩锚支护结构的内力进行监测分析,得到不同施工顺序下桩锚支护结构的内力变化规律。实验结果表明,由于施工顺序的改变,1号和2号试桩的位移有很大差异:在正常施工顺序下,1号和2号试桩的最大位移量均约为50 mm;而在异常施工顺序下,1号试桩的最大位移量约为63 mm,2号试桩的最大位移量约为52 mm。

In order to study the influence of construction sequence on the stress of pile anchor support structure in foundation pit,taking a deep foundation pit project as an example,the internal forces of pile anchor support structure under two different construction sequences were monitored and analyzed,and the internal force variation law of pile anchor support structure under different construction sequences was obtained.The experimental results show that due to the change in construction sequence,there is a significant difference in displacement between the first and second test piles:under normal construction sequence,the maximum displacement of the first and second test piles is about 50 mm;Under the abnormal construction sequence,the maximum displacement of the first test pile is about 63 mm,and the maximum displacement of the second test pile is about 52 mm.