摘要
SMW是一种采用就地搅拌水泥土体然后内插型钢形成的连续柔性挡土结构,适用于深基坑,有良好的应用前景。为保证基坑安全,需对其内插型钢的弯矩承载力发挥情况做到心中有数,但就目前的工程现状来看,直接得到内插型钢的真实弯矩很困难。作者根据深基坑工程中常规监测得到的SMW围护结构的测斜曲线,提出了一种根据变形曲线反算弯矩的简便方法,能够直接为广大工程人员掌握。这种估算方法的应用,可以节约深基坑工程中的监测费用,及时了解地下围护结构中型钢承载力发挥情况,提前采取措施避免由于设计不合理引起的工程事故。
Through the beam theory of relation between bending moment and distortion, the relationship between the bending moment of SMW wall and the field survey result of lateral deformation is established. In this article, the author introduced the steps to calculate bending moment by this method. By using this method in deep foundation pit, during the pit excavation the engineers are enabled to know the surplus bending moment capability in time and take actions to avoid the SMW wall failure if the bending moment reaches the limited moment. Moreover, with the application of this method in deep foundation pit, the stress in reinforcement could be mitigated and the total building cost could be reduced.
出处
《地下空间与工程学报》
CSCD
2005年第4期498-501,共4页
Chinese Journal of Underground Space and Engineering
关键词
深基坑
SMW工法
弯矩
测斜
deep foundation pit
SMW method
bending moment
lateral deformation
