型钢混凝土结构施工过程时变效应计算

Time Effect Calculation for Construction Process of Steel Reinforced Concrete Structures

摘要:

基于型钢混凝土(SRC)构件实际受力机制，引入主从约束方法推导了型钢混凝土组合构件子结构单元模型，解决了徐变效应下钢和混凝土的协同工作问题.采用有效模量法（AEMM）与有限元法相结合的徐变计算理论，以Visual C++和ObjectARX为工具研发了高层型钢混凝土组合结构施工过程分析软件（SRCCM），并与通用有限元软件进行对比分析，验证了软件的正确性.算例表明：采用主从约束方法的子结构单元模型能够合理地反映型钢混凝土构件实际受力机制，基于该模型所编制的高层型钢混凝土组合结构施工过程分析模拟软件能够在工程实际中应用.

Abstract:

Based on the mechanical behavior of the steel reinforced concrete (SRC) structures, the method to use the restraint between master and slave nodes to deduce substructure model of SRC structures was introduced, and the problem of the steel and concrete co work under creep was solved. The creep calculation method in combination with the ajusted effective modulus method(AEMM) and the finite element method was adopted, and a numerical simulation program SRCCM based on the Visual C++ and ObjectARX was developed for simulating the construction process of high rise SRC structures. It was validated by the general finite element software. And the construction process of a practical engineering example was analyzed. The analysis results indicate that the substructure element model of the restraint between the master and the slave nodes can reflect the actual mechanism of the SRC structure. Based on this computational model, this program which can simulate the construction process of high rise SRC structures can be applied to practical projects.