中美砌體結(jié)構(gòu)抗震設(shè)計(jì)方法與結(jié)構(gòu)性能對比分析
發(fā)布時間：2019-04-04 19:14
【摘要】：目前，在我國各個地區(qū)中，砌體結(jié)構(gòu)作為最普遍的結(jié)構(gòu)形式被使用于城鄉(xiāng)建設(shè)中。歷次震害資料表明，砌體結(jié)構(gòu)由于其本身特點(diǎn)：強(qiáng)度低、整體性差、抗震性能差等原因，導(dǎo)致在地震中發(fā)生嚴(yán)重的破壞。關(guān)于砌體結(jié)構(gòu)在地震中的破壞模式引起了學(xué)術(shù)界與工程界的高度重視，不少學(xué)者對相關(guān)問題進(jìn)行了理論與試驗(yàn)的研究。同時，部分學(xué)者將抗震設(shè)計(jì)經(jīng)驗(yàn)豐富和先進(jìn)的國家如美國、日本和歐洲等國家的抗震設(shè)計(jì)思路和具體方法納入到我國規(guī)范中進(jìn)行對比分析研究。而關(guān)于國內(nèi)外砌體結(jié)構(gòu)抗震設(shè)計(jì)對比分析，只有極少部分學(xué)者做了相關(guān)研究，對于砌體結(jié)構(gòu)的抗震設(shè)計(jì)對比分析需要進(jìn)行更深層次的研究。 本文通過對中美砌體結(jié)構(gòu)抗震設(shè)計(jì)思路和方法的對比，以中國7度0.10g區(qū)和9度區(qū)為基準(zhǔn)，分別建立模型結(jié)構(gòu)進(jìn)行中美規(guī)范下砌體結(jié)構(gòu)的設(shè)計(jì)。在研究了ABAQUS中相關(guān)參數(shù)設(shè)置的問題下，通過有限元軟件ABAQUS對上述設(shè)計(jì)的結(jié)構(gòu)進(jìn)行不同地震記錄的雙向地震動輸入，對比結(jié)構(gòu)在地震作用下不同的地震動力響應(yīng)，從結(jié)構(gòu)開裂、裂縫分布、損傷耗能等方面來考察中美規(guī)范對砌體結(jié)構(gòu)破壞模式控制方法的異同。 基于上述工作，本文得出的主要結(jié)論如下： ①在結(jié)構(gòu)設(shè)計(jì)方面，美國規(guī)范中的強(qiáng)度設(shè)計(jì)理論更接近我國的設(shè)計(jì)理論，，比容許應(yīng)力理論安全儲備低。相對配筋率中國規(guī)范要比美國規(guī)范高一些，但美國規(guī)范對梁和柱加密區(qū)箍筋的配置方面比中國嚴(yán)格許多。 ②通過結(jié)構(gòu)的地震動力時程分析，中美砌體結(jié)構(gòu)在整體反應(yīng)上基本上都以剪切變形為主；隨著橫墻間距的減小，結(jié)構(gòu)的橫向變形逐漸呈彎曲型變形。在地震作用下，中美砌體結(jié)構(gòu)的樓層位移和層間位移都相差不大；且結(jié)構(gòu)的整體損傷耗能也較接近。 ③中國規(guī)范中采用的鋼筋混凝土圈梁和鋼筋混凝土構(gòu)造柱對結(jié)構(gòu)整體性能的提高比美國規(guī)范中采用的配筋砌體圈梁和配筋砌體構(gòu)造柱對結(jié)構(gòu)整體性能的提高更好一些。
[Abstract]:At present, masonry structure is used in urban and rural construction as the most common structural form in every area of our country. The data of previous earthquakes show that the masonry structure is seriously damaged in the earthquake due to its own characteristics such as low strength poor integrity poor seismic performance and so on. The failure mode of masonry structure in earthquake has attracted much attention from both academic and engineering circles. Many scholars have carried out theoretical and experimental studies on related problems. At the same time, some scholars have brought the ideas and concrete methods of seismic design from countries with rich and advanced seismic design experience, such as the United States, Japan and Europe, into the code of our country for comparative analysis. However, only a few scholars have done relevant research on the comparative analysis of seismic design of masonry structures at home and abroad, and the comparative analysis of seismic design of masonry structures needs to be studied in a deeper level. Based on the comparison of anti-seismic design ideas and methods between China and the United States, based on China's 7-degree 0.10g and 9-degree zones, the model structures are established for the design of masonry structures under Sino-American codes. On the basis of studying the setting of relevant parameters in ABAQUS, the two-way ground motion input of different seismic records is carried out by using the finite element software ABAQUS, and the different seismic dynamic responses of the structure under earthquake action are compared, and the cracks of the structure are analyzed by means of the finite element software ABAQUS. Crack distribution and damage energy dissipation are used to investigate the similarities and differences of the control methods of masonry structure failure mode between China and the United States. Based on the above work, the main conclusions of this paper are as follows: (1) in terms of structural design, the strength design theory in the American Code is closer to the design theory in our country, and the safety reserve is lower than that of the allowable stress theory. The relative reinforcement ratio of Chinese code is higher than that of American code, but the configuration of stirrups of beam and column encryption area in American code is much stricter than that of China. 2 through the seismic dynamic time history analysis of the structure, the whole response of the masonry structures in China and the United States is dominated by shear deformation, and with the decrease of the distance between the transverse walls, the lateral deformation of the structure gradually shows bending deformation. Under the action of earthquake, the floor displacement and inter-story displacement of the masonry structures between China and the United States are not much different, and the energy dissipation of the whole damage of the structure is also close to that of the United States. (3) the overall performance of reinforced concrete ring beams and reinforced concrete structural columns adopted in Chinese codes is better than that of reinforced masonry ring beams and reinforced masonry structural columns adopted in American codes.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU364;TU352.11
本文編號：2454087
[Abstract]:At present, masonry structure is used in urban and rural construction as the most common structural form in every area of our country. The data of previous earthquakes show that the masonry structure is seriously damaged in the earthquake due to its own characteristics such as low strength poor integrity poor seismic performance and so on. The failure mode of masonry structure in earthquake has attracted much attention from both academic and engineering circles. Many scholars have carried out theoretical and experimental studies on related problems. At the same time, some scholars have brought the ideas and concrete methods of seismic design from countries with rich and advanced seismic design experience, such as the United States, Japan and Europe, into the code of our country for comparative analysis. However, only a few scholars have done relevant research on the comparative analysis of seismic design of masonry structures at home and abroad, and the comparative analysis of seismic design of masonry structures needs to be studied in a deeper level. Based on the comparison of anti-seismic design ideas and methods between China and the United States, based on China's 7-degree 0.10g and 9-degree zones, the model structures are established for the design of masonry structures under Sino-American codes. On the basis of studying the setting of relevant parameters in ABAQUS, the two-way ground motion input of different seismic records is carried out by using the finite element software ABAQUS, and the different seismic dynamic responses of the structure under earthquake action are compared, and the cracks of the structure are analyzed by means of the finite element software ABAQUS. Crack distribution and damage energy dissipation are used to investigate the similarities and differences of the control methods of masonry structure failure mode between China and the United States. Based on the above work, the main conclusions of this paper are as follows: (1) in terms of structural design, the strength design theory in the American Code is closer to the design theory in our country, and the safety reserve is lower than that of the allowable stress theory. The relative reinforcement ratio of Chinese code is higher than that of American code, but the configuration of stirrups of beam and column encryption area in American code is much stricter than that of China. 2 through the seismic dynamic time history analysis of the structure, the whole response of the masonry structures in China and the United States is dominated by shear deformation, and with the decrease of the distance between the transverse walls, the lateral deformation of the structure gradually shows bending deformation. Under the action of earthquake, the floor displacement and inter-story displacement of the masonry structures between China and the United States are not much different, and the energy dissipation of the whole damage of the structure is also close to that of the United States. (3) the overall performance of reinforced concrete ring beams and reinforced concrete structural columns adopted in Chinese codes is better than that of reinforced masonry ring beams and reinforced masonry structural columns adopted in American codes.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU364;TU352.11
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本文編號：2454087
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