【作者】 叶茂林；

【导师】 汪劲丰； 陆海军；

【作者基本信息】 浙江大学 ， 建筑与土木工程（专业学位）， 2015， 硕士

【摘要】 型钢混凝土(SRC)结构根据型钢与钢筋混凝土各自的优缺点,扬长避短地将材料有效结合在一起,可以更好地发挥型钢、钢筋、混凝土的性能,以其强度高、刚度大、抗震性强、受力性能好等优点,被广泛应用于地震区、高层超高层建筑物和大跨径建筑物中。SRC梁柱节点是整个框架的关键部分,又是梁与柱连接的纽带,同时也是梁与柱的内力传递枢纽。SRC梁-柱节点受力极其复杂,影响因素多,通常处于弯、剪和压复合应力状态。结构上部巨大荷载均需通过节点传递,研究并分析节点的受力性能,确保SRC节点的可靠性,也即是确保工程结构的安全性和可靠性的前提。在浙江广厦文体中心项目工程中,型钢混凝土梁跨度较大,结构复杂且最大悬挑半径达到7.2m；其钢网架最大跨度达72m,己超过现有规范相应范围,对下部型钢混凝土框架结构要求极高。本文针对浙江广厦文体中心实际工程项目中SRC节点实例,选出四种具有代表性节点作为研究内容：①SRC柱同时和四根SRC梁相交,②SRC柱与三根SRC梁、一根钢筋混凝土梁相交,③SRC柱与二根SRC梁、一根RC相交,④SRC柱与一根SRC梁、一根SRC梁相交。对四种节点受力情况进行分析,选取其受力最大情况进行计算,运用ABAQUS有限元软件对四种代表性节点采用分离式建模法建立有限元模型,并对其受力性能进行数值模拟分析。通过对四种节点型钢、钢筋和混凝土的应力及应变分布图的分析,得出广厦文体中心型钢混凝土结构此四种梁柱节点均具有较高的安全可靠性,并在原先基础上对四种节点钢筋配置和型钢截面形状进行优化探讨。更多还原

【Abstract】 Steel reinforced concrete (SRC) structure with high strength, stiffness, shock resistance, better performance could be effectively combined with materials based on the advantages and disadvantages of section steel and reinforced concrete, which is widely used in the building in earthquake zones, high-rise building and long span buildings. It can perform the performance of steel, reinforced, concrete.SRC beam-column joints are not only the key part of the whole framework, but also the key part of connecting beam with column, whose forces are transmitted through the joints. The pressure of SRC beam-column joints are influenced by various extremely complex factors, and usually are in the state of bending shear compression. The great load on the upper structure shall be transmitted through the joints. Researching and analyzing of the force performance from joints to ensure the reliability of SRC structure joints is also a prerequisite to ensure the safety and reliability of engineering structures.In the engineering project of the Cultural and Sports Center in Zhejiang Guangsha College, The maximum suspension of the span of SRC beam with complex structure reaches7.2m, the largest span steel truss of which is larger than the existed corresponding range, so it requires high demand for the lower part of the steel reinforced concrete frame structure.The paper picked out the four kinds of representative joints as the research program from the engineering project of the Cultural and Sports Center in Zhejiang Guangsha College.①SRC column intersect with four SRC beams simultaneously;②SRC column intersect with three SRC beams and one SRC beam;③SRC column intersect with two SRC beams and one RC beam;④SRC column intersect with one SRC beam and one RC beam. The paper analyzed the force of the four kinds of representative joints and calculated the maximum force from the four kinds of representative joints, which are build for the model of Finite Element by the Separated modeling method through the software of ABAQUS Finite Element Analysis and used to analyze the numerical simulation for the force performance from joints.The paper discussed the steel allocation and cross-sectional shape for the four joints on the basis of the original, and concluded that SRC structure with four SRC beam-column joints of the Cultural and Sports Center in Zhejiang Guangsha College is characterized by high safety and reliability through the analysis of the force and strain distribution pattern of section steel with four joints, steel and SRC.更多还原