复杂条件下矿石破碎厂房结构设计  

Structure Design of Ore Crushing Factory Building under Complex Conditions

作　　者：赵骁博 胡雄伟 王雷[1] 刘川 阙小平 Zhao Xiaobo;Hu Xiongwei;Wang Lei;Liu Chuan;Que Xiaoping(China Enfei Engineering Technology Co.,Ltd.,Beijing 100038,China;Xinjiang Guotong Pipeline Co.,Ltd.,Urumqi 831407,China)

机构地区：[1]中国恩菲工程技术有限公司,北京100038 [2]新疆国统管道股份有限公司,乌鲁木齐831407

出　　处：《特种结构》2024年第5期26-31,共6页Special Structures

摘　　要：三山岛矿石破碎厂房因建筑生产工艺的要求,在厂房主楼层下布置了近800t的混凝土矿石仓。由于矿仓壁无落地条件,采用了部分框支剪力墙结构体系。该建筑地处临海地区,风荷载大;且工程地质条件差,地处中、强腐蚀环境,抗震不利地段。对厂房结构采用SAP2000进行有限元分析,发现厂房框支转换构件(剪力墙与转换梁)近似表现为“压杆-拉杆”桁架的受力机制,比国内常用的转换梁受拉剪作用效应更突出;通过对框支柱、转换梁、钢筋混凝土楼板内力计算分析后,采取了柱承式矿仓构造措施,将框支柱兼作扶壁柱,并竖向加腋延伸至矿仓顶,加强转换梁,增加矿仓壁和楼盖的厚度,以满足结构的承载力和延性要求,确保整体结构达到4级抗震性能要求。为提高该厂房混凝土结构的耐腐蚀性能,采用了混凝土添加抗硫酸盐外加剂和外涂环氧沥青等措施。According to the technology of Sanshandao ore crushing factory building,an 800 tons of concrete ore silo was arranged under the main floor.The structure with partial frame-supported shear wall was adopted,because the shear wall cannot land to the ground.Secondly,the building was located near the sea,where the wind load is large.And the engineering site was located in poor geological conditions:,the medium to strong corrosion environment,unfavorable seismic section.SAP2000 was used to calculate and analyze the whole structure of the factory building.The results showed that the transfer story members of the frame-supported shear wall and the transfer beam were represented as"pull rod-press rod"mechanism,more prominent than the tensile shear effect of the transfer beam commonly used in China.Through the calculation and analysis of the frame pillar,transfer beam and reinforced concrete floor,the following structural measures of the pillar-supported silo were adopted.The frame pillar was also used as a buttress column,extended to the top of the silo with vertical haunch.The transfer beams were strengthened,and the thickness of the silo wall and floors were increased,in order to meet the bearing capacity and ductility requirements of the structure according to the design requirement of level 4 seismic performance.Anti-sulfate admixture to concrete and coating epoxy asphalt were used to improve the corrosion resistance of the structure.

关 键 词：临海建筑 框支转换结构 “拉杆-压杆”受力模式 框支转换节点 柱承式矿仓 耐腐蚀 

分 类 号：TU272.3[建筑科学—建筑设计及理论]