摘要
随着技术的进步,近年来桩结合预应力可回收式锚索支护方式在软土地区得到了极大发展。但由于软土自身的复杂性,软土地区基坑事故时有发生,严重影响了社会的安宁。以软土地区某深基坑桩锚支护为例,结合现场锚杆承载力测试和监测结果等与设计值相差较大,通过对险情提前预判,避免了更大的损失。在此基础上,对该基坑出现险情的原因进行了分析,并结合现场实际采取了加固措施,控制了险情进一步发展,取得了较好的效果。研究表明现场试验和监测是预防基坑事故的重要手段,加固措施要结合现场实际,能起到事半功倍的效果。
Recently,with the advancement of technology,pile-bonded prestressed retrievable anchor cable retaining has been greatly developed in soft soil areas. However,because of the complexity of the soft soil,foundation pit accidents occurred occasionally,which seriously affected the peace of society.Taking a deep foundation pit with pile-anchor retaining in Hangzhou as an example,the anchor bearing capacity test on construction site and monitoring results are quite different from the design value. By predicting the dangerous situation in advance,more losses are avoided. Based these,The reasons for the dangerous situation of the foundation pit were analyzed based on above predicting measures and the reinforcement measures were taken in combination with the actual situation to control the further development. Finally,the good results were achieved. Research shows that testing on construction site and monitoring are important means to prevent foundation pit accidents. Reinforcement measures must be combined with actual site conditions to achieve twice the result with half the effort.
作者
廖克武
余炜
高品红
Liao Kewu;Yu Wei;Gao Pinhong(The Architectural Design&Research Institute of Zhejiang University Co.,Ltd.Hangzhou 310028,China;Zhejiang Huadong Construction Engineering Co.,Ltd.Hangzhou 310014,China)
出处
《科技通报》
2020年第6期59-62,共4页
Bulletin of Science and Technology
关键词
软土
基坑工程
桩锚支护
加固措施
soft soil
foundation pit engineering
pile-anchor retaining
Reinforcement measures
