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(1 四川大學(xué)建筑與環(huán)境學(xué)院, 成都 610000; 2 西南科技大學(xué)環(huán)境與資源學(xué)院, 綿陽 621010)
摘要: 為了提高螺栓連接裝配式混凝土剪力墻力學(xué)性能的模擬分析效率,基于 OpenSees 提出了一種由非線性梁柱單元、剛性單元、Truss 單元、縫隙單元以及兩節(jié)點單元組成的簡化模型,該簡化模型不僅解決了結(jié)構(gòu)基礎(chǔ)被壓潰導(dǎo)致的模型不收斂問題,同時考慮了基礎(chǔ)寬度對接縫區(qū)域的影響. 該簡化模型的仿真結(jié)果與擬靜力試驗結(jié)果吻合較好,簡化模型可以較好地預(yù)測結(jié)構(gòu)的峰值承載力以及承載力與剛度的退化,從而驗證了其有效性. 在此基礎(chǔ)上,建立了一足尺螺栓連接裝配式墻板鄉(xiāng)村住宅模型的簡化模型,并對結(jié)構(gòu)進行了彈塑性時程分析,計算結(jié)果與試驗結(jié)果進一步驗證了簡化模型的有效性,計算結(jié)果表明螺栓連接裝配式墻板鄉(xiāng)村住宅模型在 9 度罕遇地震作用下,結(jié)構(gòu)最大層間位移角小于鋼筋混凝土抗震墻的彈性層間位移角限值 1 / 1 000,說明結(jié)構(gòu)具有良好的抗震性能.
關(guān)鍵詞: 裝配式混凝土結(jié)構(gòu); 螺栓連接; 裝配式墻板鄉(xiāng)村住宅模型; 干式連接; 簡化模型
中圖分類號:TU375 文獻標(biāo)志碼:A 文章編號:1002-848X(2023)08-0068-10
DOI:10. 19701 / j. jzjg. 20221205
Simplified model and verification of bolted prefabricated wallboard rural housing
CAO Jiajian1, XIONG Feng1, CHEN Jiang1, CHEN Wen2, ZHAO Fuchao1
(1 College of Architecture and Environment, Sichuan University, Chengdu 610000, China; 2 School of Environmentand Resource, Southwest University of Science and Technology, Mianyang 621010, China)
Abstract: Based on the OpenSees, a simplified model was proposed consisting of nonlinear beam-column element, rigidelement, Truss element, gap element and two node element to improve the bolted prefabricated concrete shear wallmechanical efficiency of performance simulation analysis. The simplified model not only solved the problem of nonconvergence caused by crushed foundation, but also considered the influence of foundation width on the joint area. Thesimulation results of the simplified model are in good agreement with the pseudo-static test results and the model can betterpredict the peak bearing capacity and the degradation of bearing capacity and stiffness, which verifies its validity. On thisbasis, a simplified model of full scale bolted prefabricated wallboard rural housing was established, and the elastic-plastictime history analysis of the structure was carried out, the calculation results with the experimental results further verify thevalidity of the simplified model, the calculation results show that the maximum story drift of the bolted prefabricatedwallboard rural housing is less than 1 / 1 000 of the elastic story drift of the reinforced concrete aseismic wall under 9 degreerare earthquake, indicating that the structure has good seismic performance.
Keywords:prefabricated concrete structure; bolted connection; prefabricated wall panel rural residential model; dryconnection; simplified mode
∗國家自然科學(xué)基金面上項目(51978428).
第一作者:曹家建,碩士,主要從事螺栓連接裝配式混凝土結(jié)構(gòu)簡化模型研究,Email: caoftuty203@ 163. com.
[引用本文] 曹家建,熊峰,陳江,等. 螺栓連接裝配式墻板鄉(xiāng)村住宅簡化模型與驗證[ J]. 建筑結(jié)構(gòu),2023,53(8):68-77. CAO Jiajian,XIONG Feng, CHEN Jiang, et al. Simplified model and verification of bolted prefabricatedwallboard rural housing[J]. Building Structure,2023,53(8):68-77.
