8KNi1F5GH55nGiH(1i)FnEK8001584600386.854.865KNi1F4GH4H4nGi(1i)FnEK8001284600386.843.892KNi1F3GH33nGH(1i)nFEK800984600386.832.919KNii1F2GH2H2nGi(1i)FnEK800684600386.821.946KNi1F1GH11nGiH(1i)FnEK1000384600386.813.431KNi1(5)计算各楼层地震剪力V8F8Fn87.78426.166113.95KNV7F7V876.811113.95190.761KNV6F6V765.838190.761256.599KNV5F5V654.865256.599311.464KNV4F4V543.892311.464355.356KNV3F3V432.919355.356388.275KNV2F2V321.946388.275410.221KNV1F1V213.431410.221423.652KN题目四:多层小砌块房屋的芯柱应符合哪些构造要求?答:1、小砌块房屋芯柱截面不宜小于120mm×120mm.2、芯柱混凝土强度等级,不应低于Cb20.3、芯柱的竖向插筋应贯通墙身且与圈梁连接;插筋不应小于1φ12,6、7度时超过五层,8度时超过四层和9度时,插筋不应小于1φ14.4、芯柱应伸入室外地面下500mm或与埋深小于500mm的基础圈梁相连。5、为提高墙体抗震受剪承载力而设置的芯柱,宜在墙体内均匀布置,最大净距不宜大于2.0m.5多层小砌块房屋墙体交接处或芯柱与墙体连接处应设置拉结钢筋网片,网片可采用直径4mm的钢筋点焊而成,沿墙高间距不大于600mm,并应沿墙体水平通长设置。6、7度时底部1/3楼层,8度时底部1/2楼层,9度时全部楼层,上述拉结钢筋网片沿墙高间距不大于400mm.
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