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一级抗震墙水平施工缝抗滑移验算探讨
李伟,王奉光,张维汇
摘 要

(山东省建筑设计研究院, 济南 250001)

[摘要]根据《高层建筑混凝土结构技术规程》(JGJ 3—2010)的有关条文,推导出了满足一级抗震墙水平施工缝抗滑移验算的竖向分布筋配筋率计算公式。结合两个算例,论述了PKPM SATWE软件给出的“还需要钢筋”的面积不能直接用于工程设计,应考虑软件计算时超配系数的影响;软件对有端柱的墙肢未考虑端柱内纵向钢筋配筋。设计时可通过读取PKPM SATWE软件中构件信息和截面内力,采用EXCEL计算满足水平施工缝抗滑移验算的全部纵向钢筋面积及竖向分布筋配筋率。为节省造价,竖向分布筋配筋率较大时可通过设置满足锚固要求的插筋代替通高竖向分布筋。

[关键词]抗震墙; 水平施工缝; 抗滑移; 竖向分布筋

中图分类号:TU398-7文献标识码:A文章编号:1002-848X(2019)05-0096-04

 

Discussion on anti-sliding checking of the horizontal construction joint for seismic structural wall with Earthquake-resistant Grade 1

Li Wei, Wang Fengguang, Zhang Weihui

(Shandong Institute of Architectural Design and Research, Jinan 250001,  China)

Abstract:According to the relevant provisions of the Technical specification for concrete structures of tall building(JGJ 3—2010), formulas to calculate the ratio of reinforcement for the vertical distributing steel bars that meet anti-sliding checking of the horizontal construction joint for seismic structural wall with Earthquake-resistant Grade 1 were derived. Based on two examples, it is proved that the “required reinforcement” area given by the PKPM SATWE software can not be directly used in engineering design and it is necessary to consider super reinforcement coefficient. For the wall with end column, the software does not consider the area of longitudinal reinforcement in the end columns. When designing, engineers can read the member information and internal force of section in PKPM SATWE software and can calculate the total longitudinal reinforcement area and the ratio of reinforcement for the vertical distributing steel bars that meet the anti-sliding checking of horizontal construction joint using EXCEL. In order to reduce the cost, it is an alternative way to reduce ratio of reinforcement for the vertical distributing steel bars by setting up the additional vertical inserting bars instead of full high vertical distributing steel bars which meet anchorage lengths.

Keywords:seismic structural wall; horizontal construction joint; anti-sliding; vertical distributing steel bars

 

作者简介:李伟,硕士,高级工程师,一级注册结构工程师,Email:lwadrisd@163.com。

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