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在《工业与民用建筑灌注桩基础设计与施工规程JGJ4-80》中,附录二[考虑承台(包括地下墙体)与基桩协同工作和土的弹性抗力作用计算受水平力的桩基]的例题用《钢筋混凝土结构设计规范TJ10-74,中的方法验算了圆截面桩身偏心受压强度。本文就此谈一点不同看法。 JGJ4-80附录二中例题是采用TJ10-74第60条验算圆截面桩身偏心受压强度的(见JGJ4-80第89页),而TJ10-74第60条是验算沿周边均匀配置钢筋的环形截面偏心受压构件的(见TJ10-74第42页)。 TJ10-74第60条注①规定:本条适用于截面内纵向钢筋数量不少于6根,且(r_2-r_1)/r_2≤0.5的环
In “Essentials for Design and Construction of Cast-in-Place Pile Foundations for Industrial and Civil Buildings JGJ4-80”, Appendix II [Calculates the Pile Foundation Subjected to Horizontal Force Considering the Captive Work of Pile Caps (including Underground Walls) and Foundation Piles and the Elastic Resistance of Soil] The example uses the method in the “Reinforced Concrete Structure Design Specification TJ10-74,” to verify the strength of the eccentric section of a circular section pile. This article talks about a bit of different opinions. The example in Appendix 2 of JGJ4-80 is to use the 60th article of TJ10-74 to check the eccentric compressive strength of the circular section (see JGJ4-80, p. 89), and section 60 of TJ10-74 is to check the uniform distribution of reinforcing bars along the periphery. Annular section eccentric compression member (see TJ10-74, page 42). TJ10-74 Article 60 notes 1 stipulates that: This section applies to rings with not less than six longitudinal bars in the cross section and (r_2-r_1)/r_2≤0.5