主楼和裙房交界处的地下室底板受力分析

发布时间：2018-01-07 01:13

本文关键词：主楼和裙房交界处的地下室底板受力分析　出处：《建筑结构》2016年S2期 　论文类型：期刊论文

【摘要】：近年来,建筑物不断增高,地下室层数不断增加。且为满足使用的要求,高层建筑和裙房或地下车库都要求建造在一起,共用一个地下室。这导致在使用过程中,特别是在沿海地区,发生多起地下室底板开裂的事故。在水位变化幅度大的地区,即使在沉降后浇带封闭之后,由于主楼和裙房的基础抗拔刚度不同还会产生上浮位移差。而这部分上浮位移差会在交界处产生巨大的底板内应力。这也是为什么即使使用了沉降后浇带,还有很多裂缝集中分布于高层建筑主楼和裙房或者车库的交界处的原因。采用ABAQUS对一条板带进行建模,根据高水位和低水位的水压差作为荷载,分析出主楼裙房桩基础相等抗拔刚度模型和主楼裙房桩基础变抗拔刚度模型的交界面的底板内力。并给出了变刚度模型下交接处底板弯矩的工程简化计算方法。
[Abstract]:In recent years, buildings have been increasing and the number of basement floors has been increasing. In order to meet the requirements of use, high-rise buildings and skirts or underground garages are required to be built together. Share a basement. This results in multiple basement floor cracking accidents during use, especially in coastal areas. In areas with large water level changes, even after the closure of the post-settlement pouring zone. Because of the difference of the foundation tensile stiffness of the main building and the skirt, there will also be the floating displacement difference. This part of the floating displacement difference will produce huge stress in the bottom plate at the junction. This is why even if the settlement post-pouring zone is used. There are also many cracks in the high-rise building and the main building or garage at the junction of the reason. Using ABAQUS to model a plate belt, according to the high water level and low water pressure difference as a load. The equivalent pull-out stiffness model of the pile foundation of the main building and the internal force of the interface between the pile foundation of the main building and the variable pull-out stiffness model of the pile foundation of the main building are analyzed, and the engineering simplified calculation method of the bending moment of the bottom plate at the junction under the variable stiffness model is given.
【作者单位】：中国联合工程公司;
【分类号】：TU93
【正文快照】： 0引言高层建筑因使用功能需要,一般都会在相邻侧边设有裙房或地下车库。其主楼地下室与裙房地下室或地下车库在很多项目中都会连接成整体。因为地下室不设置永久性沉降缝或伸缩缝,有利于抗震和防水,有利于机电管线设置,同时还可方便施工及节省造价。但根据很多实际工程后期的

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