世茂深坑酒店基础设计

Foundation design of Shimao Chasm Hotel

世茂深坑酒店位于松江采石深坑内,依崖壁建造,本文讨论了该结构的基础设计。对预应力锚索加固后的深坑岩质边坡的稳定性进行了静力荷载和大震下的非线性有限元分析。结构顶部的钢桁架一端连接主体结构,一端在坑口通过预埋件铰接于基础梁,预埋件采用了结合工程受力特点和施工需要而研究开发的多道格构式构件;结构底部结合场地基岩面标高分别采用了箱形基础和筏板基础。结构水平地震作用分别由坑顶崖壁边的坑口基础梁和坑底箱型基础承担。坑口基础梁设置了预应力锚索,来保证支座承担地震水平力并传递到远离坑口的边坡岩体。坑外裙房基础采用了嵌岩桩和筏板,离坑口较近的裙房基础采用了释放水压水箱。基础设计中综合运用了桩基、筏板基础、预应力锚索、箱形基础等多种形式。

Shimao Chasm Hotel is located in geologic chasm,constructed along the cliff,foundation design of the structure was introduced.The rock slope is reinforced by prestressed anchor cable,and nonlinear finite element analysis of rock slope stability under the action of static load and rare earthquake was carried out.The top and the bottom of the structure are supported by the chasm.The upper steel truss is connected with the main structure on one end,and is articulated on the lattice steel bearing which is embedded in the pithead foundation beam on the other end.The application of lattice steel bearing combined the characteristics of engineering mechanics and the requirement of construction.Box foundation and raft foundation are applied on the bottom.The horizontal seismic load of the structure is taken on by the pithead foundation beam and the box foundation.Prestressed anchor cable is used in the pithead foundation beam,to ensure the horizontal seismic load can be transferred to the slope rock.Rock-socketed piles and the water tank of pressure reduction are used in the annex foundation.Raft foundation,piles,prestressed anchor cable and box foundation were applied in the design of foundation.