储煤场堆载对地基和煤棚桩基影响的离心模型试验研究  

Centrifugal model tests on influences of loads of a coal storage yard on foundation and pile-based coal shed

作　　者：元光宗 李建东 YUAN Guangzong;LI Jiandong(Tianjin Research Institute for Water Transport Engineering,M.O.T.,National Engineering Laboratory for Port Hydraulic Construction Technology,Tianjin 300456,China;School of Architectural Engineering,Tianjin University,Tianjin,300000,China)

机构地区：[1]交通运输部天津水运工程科学研究院港口水工建筑技术国家工程研究中心,天津300456 [2]天津大学建筑工程学院,天津300000

出　　处：《岩土工程学报》2024年第S01期197-201,共5页Chinese Journal of Geotechnical Engineering

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(TKS20240401)。

摘　　要：某大型储煤场位于沿海地带,建设初期通过真空堆载联合预压煤场软土地基进行了预处理。储煤场煤棚基础采用预应力高强度混凝土管桩(PHC桩)进行加固处理,并在其前方设置水泥搅拌桩(CDM桩)作为保护桩。为了研究煤场长期大面积堆载对地基和桩基煤棚产生的影响,开展土工离心机模型试验,模拟了煤场循环堆卸载和30 a长期堆载两种工况。实验结果对煤场地基的沉降进行了预测,通过对桩基础的受力分析,进一步对煤场进行安全性评估。A large coal storage yard is located in the coastal zone,and the soft ground foundation of the coal yard is pre-treated by vacuum pile-loading joint pre-treatment at the early stage of construction.The coal shed of the coal storage yard is designed to be reinforced by the PHC group piles,and the CDM protection piles are set up in front of them.In order to study the influences of long-term large-scale pile loading on the foundation and pile-based coal shed,geotechnical centrifugal model tests are carried out to simulate the two working conditions of cyclic pile unloading and long-term pile loading for 30 years in the coal yard.The test results predict the settlement of the foundation of the coal yard,and further evaluated the safety of the coal yard by analyzing the stress of the pile foundation.

关 键 词：离心模型试验 软土地基 沉降 弯矩 

分 类 号：TU432[建筑科学—岩土工程]