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(山東省建筑設(shè)計研究院, 濟(jì)南 250001)
[摘要]根據(jù)《高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程》(JGJ 3—2010)的有關(guān)條文,推導(dǎo)出了滿足一級抗震墻水平施工縫抗滑移驗算的豎向分布筋配筋率計算公式。結(jié)合兩個算例,論述了PKPM SATWE軟件給出的“還需要鋼筋”的面積不能直接用于工程設(shè)計,應(yīng)考慮軟件計算時超配系數(shù)的影響;軟件對有端柱的墻肢未考慮端柱內(nèi)縱向鋼筋配筋。設(shè)計時可通過讀取PKPM SATWE軟件中構(gòu)件信息和截面內(nèi)力,采用EXCEL計算滿足水平施工縫抗滑移驗算的全部縱向鋼筋面積及豎向分布筋配筋率。為節(jié)省造價,豎向分布筋配筋率較大時可通過設(shè)置滿足錨固要求的插筋代替通高豎向分布筋。
[關(guān)鍵詞]抗震墻; 水平施工縫; 抗滑移; 豎向分布筋
中圖分類號:TU398-7文獻(xiàn)標(biāo)識碼:A文章編號: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
作者簡介:李偉,碩士,高級工程師,一級注冊結(jié)構(gòu)工程師,Email:lwadrisd@163.com。