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一、问题的提出今有A、B、C三道砌块墙,如图1所示,其截面面积、材料强度和轴压力皆相同,试问其极限抗推能力等否?A墙为一实体墙段;B墙系一般五层楼房中的实体墙,高度为A墙的五倍;C墙为五层内廊式房屋中的一道横墙,两墙肢间仅以楼板相连。荷载下,一般是反对称型的,在双向荷载下,则是对称型的(图2)。在抗侧力试验中,“八”字裂缝的出现,标志着此连系梁已进入塑性状态。
First, the problem has been proposed A, B, C three blocks wall, as shown in Figure 1, its cross-sectional area, material strength and shaft pressure are the same, ask its ultimate resistance to push and so on? A wall is an entity Wall section; B wall is a solid wall in a typical five-story building, five times the height of A wall; C wall is a horizontal wall in a five-story interior corridor type house, and the two walls are only connected by floor slabs. Under load, it is generally antisymmetric, and under biaxial loading it is symmetric (Figure 2). In the lateral resistance test, the appearance of the “eight” crack indicates that the tie beam has entered the plastic state.