应用简化的软化桁架模型设计框架中节点  

Design of Interior Joints of Framework with Simplified & Softened Truss Model

作　　者：刘华新[1] 于浩[1] 刘宇欣[1] 

机构地区：[1]辽宁工业大学土木建筑系,辽宁锦州121001

出　　处：《辽宁工学院学报》2007年第3期162-164,167,共4页Journal of Liaoning Institute of Technology(Natural Science Edition)

基　　金：辽宁省教育厅科研基金资助项目(200320085);辽宁工学院科研启动基金(X04005)

摘　　要：简化的软化桁架模型源于拉—压杆的概念,满足带裂缝混凝土的平衡条件、相容条件和本构关系。用简化的软化桁架模型对现浇钢筋混凝土框架中节点进行抗剪强度分析和设计,考虑的参数包括混凝土强度、竖向箍筋和水平箍筋的数量,阐述简化的软化桁架模型的传力途径、设计步骤等。通过对一个现浇钢筋混凝土框架中节点的实例进行了抗剪强度验算,验算结果与混凝土结构设计规范(GB50010—2002)规定方法的计算结果是一致的,证明了所提出简化的软化桁架模型的有效性、实用性。A simplified softened truss model originated from the strut-tie concept and satisfied equilibrium, compatibility and constitutive laws of the cracked reinforced concrete. A simplified softened truss model for design and analyses of the shear strength of interior joint of framework were proposed. The reviewed parameters included the concrete strength, the amount of vertical hoop, and the amount of horizontal hoop, with transitive path and design procedures of the simplified softened truss model expounded. Through shearing strength calculation of sample joint in the framework being concreted in the working site, the result was in conformity to that regulated by GB 50010-2002, which proved the effectiveness and application from this simplified ＆ softened truss model.

关 键 词：简化的软化桁架模型 中节点 抗剪强度 混凝土强度 竖向箍筋 水平箍筋 

分 类 号：TU323.5[建筑科学—结构工程]