建筑基坑桩锚支护存在的问题及绿色施工技术研究

Problems of retaining and protecting of pile-anchor in building foundation pit engineering and researches on green construction technology

分析了目前建筑基坑工程广泛采用的桩锚支护加降水结构存在的浪费资源、破坏或污染环境及影响后续地下工程等问题,提出了采用水泥土防渗桩墙插型钢与可回收锚索的绿色施工技术,并进行了水泥土浆材的实验研究,以及水泥土桩的施工工艺与防渗桩墙布置形式、型钢及其插拔工艺和可回收新型锚索的初步探索。

In the paper,through the analysis to the retaining and protecting structure of pile-anchor and dewatering which is widely used in building foundation pit engineering, some problems existed in the retaining and protecting of pile-anchor are analyzed, such as the waste of resources, environmental pollution and destruction,and disturbing subsequent underground engineering etc. A green construction technology is proposed, together with cement-soil seepage pile experiments. Further more, some topics are also made primary exploration such as the construction technology of cement-soil pile and the arrangement of antiseepage pile wall,shaped steel and the technology of plugging in and pulling out, and a new type of recyclable anchor ropes.