15万m^3储油罐桩基础的隔震设计  

Seismic isolation design of 150 000 m^3 tank pile foundation

作　　者：郝进锋[1] 孙建刚[2] 刘扬[1] 郑建华[3] 李金光[3] 

机构地区：[1]东北石油大学土木建筑工程学院,黑龙江大庆163318 [2]大连民族学院土木建筑工程学院,辽宁大连116600 [3]中国寰球工程公司,北京100028

出　　处：《地震工程与工程振动》2014年第2期233-239,共7页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(51278089);中国石油集团公司科技专项(H201104006)

摘　　要：以15万m3立式钢制储罐为例,以确保储罐上部结构不破坏和降低基底剪力为目的,在承台和桩基础之间设置叠层橡胶铅阻尼隔震装置。结合拟建场地地质资料,合理地选择了持力层,确定了桩径、桩长、单桩承载力和桩数;考虑承台、基桩协同工作和土的弹性抗力作用,给出了桩基水平刚度和竖向刚度;设计了隔震橡胶垫,得出了橡胶垫力学参数;建立了储罐隔震三质点力学模型,给出了运动方程,进行数值模拟计算,结果表明:在桩基础和承台之间设置隔震装置,可有效地降低储罐基底剪力和基底弯矩,达到减震效果。Taking vertical steel tanks of 150 000 m^3 as an example ,we set up lead laminated rubber damping vibra- tion isolation device between the cap and the pile foundation,in order to ensure the upper tank structure from dam- age and reduce the base shear. Based on the proposed site geological data, we reasonably select the bearing layer, pile diameter, pile length and single pile bearing capacity and pile numbers. Considering pile caps and pile work- ing together and soil elastic resistance effect, we give horizontal stiffness and vertical stiffness of the pile founda- tion, design isolation rubber mat and obtain the rubber mat mechanical parameters. We establish tank isolation three particle mechanics model, derive the equation of motion and make the numerical simulation calculation. The results show that setting isolation device between pile foundation and pile caps can effectively reduce the tank base shear and base bending moment and produce the damping effect.

关 键 词：储罐 桩基 橡胶垫 隔震 地震响应 

分 类 号：TU352.1[建筑科学—结构工程] TU473.1