软弱地层建筑物地下室基础不同支护方案的对比研究

Comparative Research on Different Support Schemes for Basement Foundations of Buildings in Weak Strata

随着中国城市化进度的加快,地面资源越来越少,使用桩筏基础的高层建筑物逐渐增多,但中国大部分东部城市地层较为软弱,导致较多高层建筑物基础工程变形较大,更严重的甚至影响到周边建构筑物的安全,引起结构开裂整体倾斜等现象。针对如何合理有效使用桩筏基础提高基础承载力这一问题,论文以某实际工程为例,对比了筏板基础和桩筏基础的支护效果,并揭示了桩筏基础上嵌入桩有效数量和位置的关键设计问题,以期为类似工程提供借鉴和参考。

With the acceleration of China’s urbanization progress,the ground resources are less and less,the use of pile raft foundation of high�rise buildings gradually increased,but most of the eastern cities in China are relatively weak,resulting in more high-rise building foundation engineering deformation is larger,more serious and even affect the safety of surrounding structures,causing structural cracking overall tilt and other phenomena.Aiming at the problem of how to use pile raft foundation reasonably and effectively to improve the bearing capacity of foundation,this paper takes a practical project as an example,compares the supporting effect of raft foundation and pile raft foundation,and reveals the key design problems of the effective number and position of embedded piles in pile raft foundation,in order to provide reference for similar projects.