采用水泥土拱与灌注桩组合的空间支护结构

软土地区临江大面积深基坑采用拱形水泥土架刚架式钻孔桩空间组合支护结构作为挡土防渗支护体系，可充分利用桩的空间组合效应，发挥水泥土抗压强度高的性能，其结构形式新颖，受力合理，挡土防渗安全可靠，应用在软土地区不能采用锚杆和内支撑的狭窄场地的大面积深基坑支护工程中，具有独特的优越性。

APPLICATION OF SPACE STRUTTING STRUCTURES MADE OF CEMENT-EARTH ARCHES COMPOUNDED WITH RIGID FRAME BORED PILES

The space strutting structures made of cement-earth arches compounded with rigid frame bored piles has been adopted for construction of a large area deep foundation pit located at the soft-soil region alongside a river-bank.These measures have been proved practica1 and with the following merits namely:1,as a leak proof strutting system 2,bored pile's space effectiveness could be fully carried out and 3,cement-earth arche's strong compressive strength could be greatly implemented.In the final analysis,these types of structures are unique,strong and reliable both in leak proof and bearing capacity.Because that anchor bars and internal struts are impossible to be used and that the construction site is narrow and difficult,therefore,the space strutting structures made of cement-earth arches compounded with rigid frame bored piles has been proved of unique properties and meritorious advantages.