浙江省抗震超限建筑的超限类型与加强措施

发布时间：2018-05-02 07:49

本文选题：超限建筑 + 高度超限　；参考：《浙江工业大学》2014年硕士论文

【摘要】：高层建筑是社会发展的必然产物,而超限高层建筑则是建筑师追求外形和功能的产物,也是社会文明的象征。随着社会的进步,出现了越来越多的超限高层建筑,因此有必要总结超限高层建筑的超限类型及加强措施。本文主要分析超限高层建筑的超限类型、加强措施及一些有代表意义的超限高层建筑,得到如下结论：(1)随着建筑高度的增大,建筑的侧移控制成为了高层建筑设计的重点。对于高度超限的建筑,主要运用了桩筏基础、钻孔灌注桩,且采用较厚的筏板来弥补场地地基土的不利因素,满足承载力要求和沉降要求；并选取了延性较好的型钢混凝土柱或钢管混凝土柱。(2)超限高层建筑扭转位移比都大于1.2,因此建筑结构体型的选择及结构布置的对称性是结构设计的重点也是难点。(3)超限高层建筑出现凹凸不规则、组合平面不规则占到了33.3%；楼板局部不连续占到了66.6%,其中局部开洞面积大于30%和层有效宽度小于50%各占50%；侧向刚度不规则占到了50%；抗侧力构件不连续占到了46.3%；承载力突变占到了18.5%；穿层柱占到了68.5%,斜柱占到了20.4%。(4)对带连体的双塔楼分析得出,塔楼不存在刚度突变的薄弱层,且南北塔楼振动模态影响较小,在常遇小震下南北塔楼基本保持各自振动,在中震和大震作用下,结构满足规范的要求。
[Abstract]:High-rise building is the inevitable outcome of social development, and over-limit high-rise building is the result of architect's pursuit of appearance and function, and also the symbol of social civilization. With the development of society, more and more high-rise buildings have been built, so it is necessary to sum up the types and measures of over-limit high-rise buildings. This paper mainly analyzes the types of overpass high-rise buildings, strengthens the measures and some representative high-rise buildings. The conclusion is as follows: 1) with the increase of building height, the control of building lateral movement becomes the focus of high-rise building design. For the buildings with height exceeding limit, the pile-raft foundation, bored pile and thick raft are used to make up for the unfavorable factors of the ground soil and meet the requirements of bearing capacity and settlement. And the ratio of torsional displacement of steel reinforced concrete columns or concrete-filled steel tube columns with good ductility is larger than 1.2. Therefore, the choice of building structure shape and the symmetry of structure arrangement are the key and difficult points in structural design. (III) irregular concave and convex features in overstretched high-rise buildings, The irregularity of composite plane occupied 33.3am, the local discontinuity of floor occupied 66.66b, in which the area of local hole was more than 30% and the effective width of floor was less than 50%, the lateral stiffness was irregular, the discontinuity of anti-lateral force member accounted for 46.3%, the bearing capacity was 46.3%, and the effective width of floor was less than 50%. The force mutation accounted for 18.5 percent; the penetrating column accounted for 68.5; the oblique column accounted for 20.40.The analysis of the twin towers with a conjoined body, There is no weak story with sudden stiffness change, and the vibration mode of the north and south tower has little influence. The north and south towers basically maintain their vibration under the frequent small earthquake, and the structure meets the requirements of the code under the action of moderate earthquake and strong earthquake.
【学位授予单位】：浙江工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU973.3

【共引文献】