竖向荷载下的生态复合墙体内力计算及影响因素分析

CALCULATION OF INTERNAL FORCE AND INFLUENCE FACTORS ANALYSIS OF ECO-COMPOSITE WALL UNDER VERTICAL LOADING

生态复合墙体在竖向荷载作用下,墙体各组件(边框、肋格、填充砌块)之间存在协同工作关系。采用弹性地基梁理论,建立生态复合墙体在竖向荷载作用下的内力计算模型,定量地计算出各组件在竖向荷载作用下承担的内力,分析影响墙体受力分配关系的因素。理论分析与试验结果对比表明:该计算模型运用于竖向荷载作用下的生态复合墙体内力计算具有一定的精确度;各组件分配竖向荷载比例与暗梁刚度、边框柱刚度及复合墙板等效弹性模量等因素有关,边框柱刚度的影响小于暗梁刚度影响;当复合墙板等效弹性模量增大至30 GPa时,边框柱承担的荷载只占总荷载的18.4%。该研究结果为生态复合墙结构的抗震优化设计提供了一定的参考。

Under vertical loading, the three-part members of the eco-composite wall （side frame, rib grids and filler blocks） work cooperatively. Based on the elastic foundation beam theory, the mechanical calculation model of the coo-composite wall was established. The internal force carried by each component was quantitatively calculated. The influence factors of the bearing performance of the components in the wall were analyzed. The comparison of theory analysis with experiment results showed that the calculation of the internal force had a certain degree of precision; the vertical loads carried by each component was related to such factors as the stiffness of side-frame column, the stiffness of concealed beam and the equivalent elastic modulus of the eco-composite slab. The stiffness of the side-frame beam had greater effect on the loads distribution than that of side-frame column. When the equivalent elastic modulus increased to 30 GPa, the proportion of the loading carried by the side-frame column was only 18.4% of the total load. The results of the research would provide an important theory foundation for the seismic optimum design of the coo-composite wall structure.