混凝土灌注桩广泛应用,一方面如果钢筋笼长度在施工中不能满足设计要求,将导致灌注桩不能满足承受设计荷载要求,影响结构的承载力、稳定性和抗震性能,使建(构)筑物安全性降低甚至破坏;另一方面,由于混凝土灌注桩钢筋笼属于隐蔽工程,钢筋笼长度的工后检测难度大,故灌注桩钢筋笼长度短缺已成为少数工程偷工减料的主要手段。通过实例尝试从桩内埋管施工工艺、对成桩后桩承载力的影响、与未埋管桩检测的经济分析对比,探索桩内埋管磁法检测钢筋笼长度的可行性。
living standards, poor farmers in less tha n complete eliminati on of 4600 Yuan, 8949, 19008. "Five waters rule": t he County i nvested 2.169 billi on yua n, simil ar countie s line t he city's first complete t he 42 km of se wage pi pe netw ork constr ucti on, compl etion rate ranked first in the city, won the pr ovincial r ural sewage treatment w ork better; key poll ution sources such a s elect