- 摘 要
-
(1 西安工程大學(xué)城市規(guī)劃與市政工程學(xué)院， 西安 710048； 2 陜西省建筑科學(xué)研究院有限公司，西安 710082； 3 西安建筑科技大學(xué)土木工程學(xué)院， 西安 710055)
摘要: 為提高古建筑砌體結(jié)構(gòu)抗震性能，設(shè)計(jì)制作了 3 組古建筑砌體試塊和 3 片古建筑砌體墻試件，分別利用環(huán)氧樹脂和甲基丙烯酸甲酯進(jìn)行性能增強(qiáng)。 通過試塊的材料力學(xué)性能試驗(yàn)研究其力學(xué)性能，提出了性能增強(qiáng)古建筑砌體的本構(gòu)關(guān)系；通過墻體的擬靜力試驗(yàn)研究了性能增強(qiáng)古建筑砌體墻的破壞形態(tài)、滯回性能、延性、耗能能力等。結(jié)果表明:高分子材料能夠有效約束古建筑砌體結(jié)構(gòu)墻體裂縫的開展，提高墻體的承載力和變形能力，其中采用環(huán)氧樹脂進(jìn)行性能增強(qiáng)后，墻體承載力和延性相對于未增強(qiáng)墻體分別提高了 30%和 31%，采用甲基丙烯酸甲酯進(jìn)行性能增強(qiáng)后，墻體承載力和延性分別提高了 18%和 42%；性能增強(qiáng)后墻體的滯回環(huán)面積和等效黏滯阻尼系數(shù)均大于未增強(qiáng)墻體，耗能能力得到增強(qiáng)；最后根據(jù)擬合試驗(yàn)曲線建立性能增強(qiáng)古建筑砌體的本構(gòu)模型，并進(jìn)行了有限元分析，有限元計(jì)算結(jié)果與試驗(yàn)結(jié)果吻合較好，可為古建筑砌體結(jié)構(gòu)抗震保護(hù)提供參考。
關(guān)鍵詞: 古建筑； 砌體墻； 抗震性能； 環(huán)氧樹脂； 甲基丙烯酸甲酯； 高分子材料
中圖分類號:TU362 文獻(xiàn)標(biāo)志碼:A 文章編號:1002￣848X(2022)02￣0140￣10
DOI:10. 19701 / j.jzjg.20200183
Seismic performance test and finite element analysis of performance￣enhanced ancient building masonry walls
ZHAO Hao1， LIU Wei2， YANG Tao1， WANG Sheliang3， LI Binbin3
(1 School of Urban Planning and Municipal Engineering， Xi’an Polytechnic University， Xi’an 710048，China；2 Shaanxi Architecture Science Research Institute Co.， Ltd.， Xi’an 710082， China； 3 School of Civil Engineering，Xi’an University of Architecture and Technology， Xi’an 710055， China)
Abstract: In order to improve the seismic performance of ancient building masonry structure， three groups of ancientbuilding masonry test pieces and three ancient building masonry wall test pieces were designed and manufactured， whichwere strengthened by epoxy resin and methyl methacrylate respectively. The mechanical properties of the test block werestudied through the material mechanical properties test， and the constitutive relationship of the performance￣enhancedancient building masonry was proposed. Through the pseudo￣static test of the wall， the failure form， hysteresis performance，ductility and energy dissipation capacity of the performance￣enhanced ancient building masonry wall were studied. Theresults show that polymer materials can effectively restrict the development of cracks in the wall of ancient building masonrystructure and improve the bearing capacity and deformation capacity of the wall. Compared with the unreinforced wall， thebearing capacity and ductility of the wall with epoxy resin are increased by 30% and 31% respectively， and the bearingcapacity and ductility of the wall with methyl methacrylate are increased by 18% and 42% respectively. The hysteretic looparea and equivalent viscous damping coefficient of the strengthened wall are greater than those of the unreinforced wall， andthe energy dissipation capacity is enhanced. Finally， the corresponding constitutive model is established according to thefitting test curve， and the finite element analysis of the performance enhanced ancient building wall is carried out. The finiteelement calculation results are in good agreement with the test results， which can provide a reference for the seismicprotection of ancient building masonry structure.
Keywords: ancient building； masonry wall； seismic performance； epoxy resin； methyl methacrylate； polymer material
∗國家自然科學(xué)基金(51678480)，西安建筑科技大學(xué)結(jié)構(gòu)工程與抗震教育部重點(diǎn)實(shí)驗(yàn)室開放基金(KL￣SEER￣ME￣202003)。
第一作者:趙浩，碩士，工程師，主要從事建筑結(jié)構(gòu)檢測鑒定、地基事故處理以及地質(zhì)災(zāi)害治理方向的研究工作，Email:harry57254779@ 163.com。
[引用本文] 趙浩，劉偉，楊濤，等. 性能增強(qiáng)古建筑砌體墻抗震性能試驗(yàn)及有限元分析[ J]. 建筑結(jié)構(gòu)，2022，52(2 ): 140￣149. ZHAO Hao， LIU Wei， YANG Tao， et al. Seismic performance test and finite element analysis ofperformance￣enhanced ancient building masonry walls[J]. Building Structure，2022，52(2):140￣149.
- 下載地址
-
