膨胀土特性对双排桩支护结构的影响分析  

Influence Analysis of Expansion Soil Characteristics on Double-Row Pile Support Structure

作　　者：林治平 陈小丹[1,2] LIN Zhiping;CHEN Xiaodan(Guangdong Research Institute of Water Resources and Hydropower,Guangzhou 510635,China;Guangdong Research Center of Geotechnical Engineering Technology,Guangzhou 510635,China)

机构地区：[1]广东省水利水电科学研究院,广东广州510635 [2]广东省岩土工程技术研究中心,广东广州510635

出　　处：《广东水利水电》2020年第2期35-39,共5页Guangdong Water Resources and Hydropower

摘　　要：以成都市膨胀土地区某大型停车场永久边坡的双排桩支护结构为研究对象,采用数值模拟和理论分析手段,通过改变不同含水量下膨胀土的重度、强度、膨胀力的特性参数,对双排桩的受力、变形、稳定性进行了深入的研究。结果表明,随着膨胀土吸水膨胀,桩身的内力和变形均增大,嵌固稳定系数减少,因此,工程建设中需充分考虑膨胀土特性对双排桩支护结构的不利影响。Taking the double-row pile support structure of permanent slope in a large parking lot in Chengdu area as the research object,through numerical simulation and theoretical analysis,the parameters of the heavy,strength,and expansion force of the expansive soil under different water content are calculated. The stress,deformation and stability of double-row piles were studied in depth. The results show that with the expansion of water absorption,the internal force and deformation of the pile body increase,and the stability coefficient of embedded stability decreases. Therefore,the adverse effects of the expansion soil characteristics on the double-row pile support structure should be fully considered in the engineering construction.

关 键 词：膨胀土 双排桩 内力 变形 稳定性 

分 类 号：TU443[建筑科学—岩土工程]