多层砌体房屋其主要抗震措施 1.设置构造柱和圈梁 2. 限制墙段的最小尺寸,并规定横墙最大间距 正确答案到

2025-04-04 20:06:10
推荐回答(1个)
回答1:

给你发个这个 看有用没有4多层砌体结构抗震设计
4.1一般规定

《建筑抗震设计规范》VBJ 11—89
5.1.2多层砌体房屋的总高度和层数,不应超过表5.1.2的规定;对医院、教学楼等横墙较少的房屋总高度,应比表5.1.2的规定相应降低3m,层数应相应减少一层;各层横墙很少的房屋,应根据具体情况再适当降低总高度和减少层数。
注:房屋的总高度指室外地面到檐口的高度,全地下室可从室外地面算起。
5.1.4多层砌体房屋的结构体系,应符合下列要求:
一、应优先采用横墙承重或纵横墙共同承重的结构体系;
五、烟道、风道、垃圾道等不应削弱墙体;当墙体被削弱时,应对墙体采取加强措施;
5.1.5多层砌体房屋抗震横墙的间距,不应超过表5.1.5的要求。

5.2.4各类砌体沿阶梯形截面破坏的抗震抗剪强度设计值,应按下式确定:
式中fvE——砌体治阶梯形截面破坏的抗震抗剪强度设计值;
FV ——非抗震设计的砌体抗剪强度设计值;
——砌体强度的正应力影响系数,按表5.2.4采用。

4.2粘土砖、多孔砖房屋

《建筑抗震设计规范》GBJ 11-89
5.3.1多层粘土砖房,应按下列要求设置钢筋混凝土构造柱(以下简称构造柱):
一、构造柱设置部位,一般情况下应符合表5.3.1的要求。
砖房构造柱设置要表5.3.1
二、外廊式和单面走廊式的多层砖房,应根据房屋增加一层后的层数,按表5.3.1要求设置构造柱,且单面走廊两侧的纵墙均应按外墙处理;
三、教学楼、医院等横墙较少的房屋,应根据房屋增加一层后的层数,按第一款或第二款的要求设置构造柱。
5.3.3 7度时层高超过3.6m或长度大于7.2m的大房间,及8度和9度时,外墙转角及内外墙交接处,当未设构造柱时,应沿墙高每隔500MM配置2 6拉结钢筋。
5.3.4后砌的非承重砌体隔墙应沿墙高每隔500MM配置2 /0 6钢筋与承重墙或柱拉结,并每边伸入墙内不应小于500MM,8度和9度时长度大于
5.l米的后砌非承重砌体隔墙的墙顶,尚应与楼板或梁拉结。
5.3.5多层粘土砖房的现浇钢筋混凝土圈梁设置,应符合下列要求:
一、装配式钢筋混凝土楼、屋盖或木楼、屋盖的砖房,横墙承重时应按表5.3.5的要求设置圈梁,纵墙承重时每层均应设置圈梁,且抗震横墙上的圈梁间距应比表内要求适当加密;
二、现浇或装配整体式钢筋混凝土楼、屋盖与墙体可靠连接的房屋可不另设圈梁,但楼板应与相应构造柱用钢筋可靠连接;砖房现浇钢筋混凝土圈梁设置要来表5.3.5
5.3.6多层粘土砖房的现浇钢筋混凝土圈梁构造,应符合下列要求:
一、圈梁应闭合,遇有洞口应上下搭接;
二、圈梁在本节筹5.3.5条要求的间距内无横墙时,应利用梁或板缝中配筋替代圈梁;
5.3.7多层粘土砖房的楼、屋盖应符合下列要求:
二、装配式钢筋混凝土楼板或屋面板,当圈梁末设在板的同一标高时,板端伸进外墙的长度不应小于120MM,伸进内墙的长度不宜小于100MM,且不应小于80MM,在梁上不应小于80MM;
三、当板的跨度大于4.8MM并与外墙平行时,靠外墙的预制板侧边应与墙或圈梁拉结;
四、房屋端部大房间的楼盖,8度时房屋的屋盖和9度时房屋的楼、屋盖,当圈梁设在板底时,钢筋混凝土预制板应相互拉结,并应与梁、墙或圈梁拉结。
5.3.12楼梯间应符合下列要求:
二、8度和9度时,楼梯间及门厅内墙阳角处的大梁支承长度不应小于 500MM,并应与圈梁连接;
三、装配式楼梯段应与平台板的梁可靠连接;不应采用墙中悬挑式踏步或踏步竖肋插入墙体的楼梯,不应采用无筋砖砌栏板;
四、突出屋顶的楼、电梯间,构造柱应伸到顶部,并与预部圈梁连接,内外墙交接处应沿墙高每隔500MM设2 /0 6拉结钢筋。
《多孔砖(KP1型)《建筑抗震设计与施工规程》 JGJ 68-90
5.0.1一般情况下,多孔砖房屋应按表5.0.1的要求设置钢筋混凝土构造柱(以下简称构造柱)。
5.0.6多孔砖房屋的现浇钢筋混凝土圈梁设置应符合下列规定:
一、装配式钢筋混凝土楼、屋盖或木楼、屋盖房屋,应每层设置圈梁。
《设置钢筋混凝土构造柱多层砖房抗震技术规程》JCJ/113-94
3.14构造柱应沿整个建筑物高度对正贯通,不应使层与层之间构造柱相互错位。

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