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(1 中國建筑西南設計研究院有限公司, 成都 610041; 2 浙江大學高性能結構研究所, 杭州 310058;3 杭州鐵木辛柯建筑結構設計事務所有限公司, 杭州 311215)
摘要: 截面高寬比 h / b 大于 2. 0 的矩形鋼管混凝土柱具有較好的外觀優(yōu)勢,能避免室內出現凸柱現象,隨著實際應用日漸增多,對其的研究也越發(fā)深入. 根據《隱式鋼管混凝土結構技術規(guī)程》 (T/ CECS 951—2021)和《矩形鋼管混凝土結構技術規(guī)程》(CECS 159:2004)兩本規(guī)范給出的條文對構件的計算結果及構造要求進行了對比. 計算對比包括截面塑性發(fā)展能力、單向壓彎荷載作用下的截面強度及單向壓彎荷載作用下的平面內穩(wěn)定承載力等三個方面. 計算結果將再與多組實際試驗結果進行對比,根據兩者計算偏差判斷規(guī)范公式的合理性. 構造方面主要對比截面尺寸、長細比、寬厚比、軸壓比及強柱弱梁驗算公式和免除強柱弱梁驗算的條件. 結果表明,相比于 CECS 159:2004,T/ CECS 951—2021 更接近實際試驗結果,計算公式更合理,構造要求規(guī)定更全面.
關鍵詞: 矩形鋼管混凝土柱; 壓彎承載力; 軸壓比; 長細比; 寬厚比; 強柱弱梁
中圖分類號:TU391 文獻標志碼:A 文章編號:1002-848X(2023)11-0149-07
DOI:10. 19701 / j. jzjg. LZ2208
Understanding and application of the Design method for steel structures and steel-concrete compositestructures—rectangular concrete-filled steel tube column
ZHOU Jia1, TONG Genshu2, FU Bo3, LIU Yifeng1, LI Changhong1, ZHANG Yue3
(1 China Southwest Architectural Design & Research Institute Co. , Ltd. , Chengdu 610041, China; 2 Instituteof High-performace Structures, Zhejiang University, Hangzhou 310058, China; 3 Hangzhou TongMSK ArchitecturalStructure Design Office Co. , Ltd. , Hangzhou 311215, China)
Abstract: The rectangular concrete-filled steel tube column with the height-width ratio h / b greater than 2. 0 has betterappearance advantages and can avoid the phenomenon of convex in the room. With the increasing of practical applications,the relevant research is getting deeper. The calculation results and construction requirements of components were comparedaccording to the provisions given in Technical specification for structures with deep concrete-filled steel tubular members (T/CECS 951—2021) and Technical specification for structures with concrete-filled rectangular steel tube members (CECS 159:2004). The calculation includes three aspects, which are the section plastic development capacity, the section strengthunder one-way compression and bending load, and in-plane stability bearing capacity under one-way compression andbending load. The calculation results will be compared with the actual test results and the rationality of the standard formulawill be judged according to the calculation deviation. In terms of structure, the comparison includes the section size,slenderness ratio, width-to-thickness ratio, axial compression ratio, and the calculation and exemption of strong columnsand weak beams. The results show that compared to CECS 159:2004, T/ CECS 951—2021 is closer to the actual testresults, the calculation formula is more reasonable, and the construction requirements are more comprehensive.
Keywords: rectangular concrete-filled steel tube column; compression-bending capacity; axial compression ratio;slenderness ratio; width-to-thickness ratio; strong column and weak beam
第一作者:周佳,碩士,高級工程師,一級注冊結構工程師,主要從事鋼結構、組合結構的設計研究,Email:83294306@ qq. com.
[引用本文] 周佳,童根樹,付波,等. 《鋼結構與鋼-混凝土組合結構設計方法》的理解與應用———矩形鋼管混凝土柱[J]. 建筑結構,2023,53(11):149-155. ZHOU Jia,TONG Genshu,FU Bo,et al. Understanding and application of theDesign method for steel structures and steel-concrete composite structures—rectangular concrete-filled steel tube column[ J].Building Structure,2023,53(11):149-155.
