【作者】 李晓；

【导师】 张延年；

【作者基本信息】 沈阳建筑大学 ， 结构工程， 2018， 硕士

【摘要】 目前,我国的建筑业发展比较粗放,建筑大多都还是现浇式混凝土结构,资源不能完全利用,建造过程中还会产生大量不可避免的污染,如建筑垃圾、污水、粉尘等污染物,对周边环境的影响较大。若一直保持这种建筑模式,那么经济增长与资源、环境之间的矛盾无法得到有效解决。装配式混凝土结构表现出来的经济效益和对环境的友好性,已经在其它发达国家和我国的实际工程中得到了有力证明。发展装配式混凝土结构可以节约大量资源,符合节能减排的政策,大大缩短了工期,加快建造速度,也很大程度上避免了建造过程中产生的各种污染。目前我国预制建筑的主要形式是装配整体式结构,现场湿作业较多且施工效率不高,预制装配式干式连接的方式具有施工连接快,大量节约工期、成本等优势,应作为今后的主要发展模式。但干式连接的节点连接方式其抗震性能较差,因此抗震和节点连接等问题亟需科研攻关和实验研究。本文分别设计了现浇式节点、预制装配式阶梯型干式连接梁柱节点和预制装配式法兰盘型干式连接梁柱节点,利用Abaqus有限元分析软件对这两类干式连接梁柱节点进行抗震性能分析,并与现浇式节点进行对比分析。文中首先研究了预制装配式阶梯型干式连接梁柱节点的连接钢板上螺栓孔位置与连接钢筋位置的分布形式对构件受力性能的影响,寻找出一种最优的分布形式,既能使得连接钢板的应力分布比较均匀,又能最节省材料。在最优的分布形式下,对预制装配式阶梯型干式连接梁柱节点进行建模,并进行低周往复位移加载,得出一系列抗震性能评价指标,并对螺栓屈服强度、装配连接位置、轴压比进行参数化分析。利用Abaqus对预制装配式法兰盘型干式连接梁柱节点进行低周往复位移加载,对其破坏形态、滞回曲线、骨架曲线、极限承载力、延性、强度退化、刚度退化等一系列抗震性能评价指标进行分析,并对节点连接钢筋数量、装配连接位置、轴压比进行参数化分析。更多还原

【Abstract】 At present,the development of China’s construction industry is relatively extensive,most are still building cast-in-situ concrete structure,the resources can not be fully utilized,but also the construction process inevitably produces a large number of pollution,such as construction waste,sewage,dust and other pollutants,the impact on the surrounding environment greatly.If this kind of building model is maintained,the contradiction between economic growth and resources and environment can not be effectively solved.The economic benefits and environmental friendliness of the fabricated concrete structure have been proved in other developed countries and our country.The development of fabricated concrete structure can save a lot of resources,comply with the policy of energy saving and emission reduction,shorten the construction period,speed up the construction,and largely avoid the various pollution generated during the construction process.At present,the main form of prefabricated buildings in China is the assembly of integral structure.There are many wet operations in the field,and the construction efficiency is not high.The precast and fabricated dry connection mode has the advantages of fast construction connection,large saving time and cost and so on,so it should be the main development mode in the future.However,the aseismic performance of the joint connection of dry connection is poorso the research and experimental research are urgently needed for the problems of earthquake resistance and joint connection.We design the castin-place joint,prefabricated and assembled staircase type dry connected beam column joints and flange plate dry connected beam-column joint,the seismic performance analysis of the two types of dry connection of beam-column joints by using Abaqus finite element analysis software,and compared with the cast-in-place joints.This paper studies the effect of refabricated and assembled staircase dry connected beam-column joints of steel plate bolt hole position and connection steel position distribution on the stress performance of members,to find out the distribution form of an optimal,which can make the connection plate stress distribution is more uniform,and the material saving.In the form of the optimal distribution,building the model of prefabricated and assembled staircase dry connected beam column joints and the low cycle reciprocating displacement loading,and draw some seismic performance evaluation index,and analysis the parameter of its bolt yield strength,assembly connection position and axial compression ratio.Using of Abaqus for low cycle reciprocating displacement loading on prefabricated and assembled flange plate dry connected beam-column joint,the failure pattern,hysteresis curves,skeleton curves,ultimate bearing capacity,ductility,strength degradation,stiffness degradation and a series of seismic performance evaluation index is analyzed,and analysis the parameter of its number of joints connecting steel bars,assembly the connection position and the axial compression ratio of.更多还原