884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

（1 上海核工程研究設(shè)計(jì)院， 上海 200233； 2 同濟(jì)大學(xué)預(yù)應(yīng)力研究所， 上海 200092; 3 同濟(jì)大學(xué)先進(jìn)土木工程材料教育部重點(diǎn)實(shí)驗(yàn)室， 上海 200092）

［摘要］利用ABAQUS有限元軟件，應(yīng)用塑性損傷混凝土模型和考慮屈服后強(qiáng)度的多段線鋼質(zhì)材料模型，對(duì)閘門洞口、加腋區(qū)和扶壁等幾何非線性因素和預(yù)應(yīng)力筋、普通鋼筋和鋼襯里在不同區(qū)域的差異性進(jìn)行了精細(xì)化建模，對(duì)預(yù)應(yīng)力安全殼結(jié)構(gòu)在超設(shè)計(jì)基準(zhǔn)壓力下的力學(xué)性能進(jìn)行了數(shù)值研究，并給出了各項(xiàng)指標(biāo)隨壓力增長(zhǎng)的發(fā)展規(guī)律，以期為預(yù)應(yīng)力安全殼結(jié)構(gòu)內(nèi)壓作用下的承載能力確定、結(jié)構(gòu)設(shè)計(jì)和安全評(píng)定提供一定的指導(dǎo)意義。

［關(guān)鍵詞］預(yù)應(yīng)力安全殼； 超設(shè)計(jì)基準(zhǔn)壓力； 塑性損傷混凝土模型； 非線性

中圖分類號(hào)：TU378-2文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)08-0077-06

 

Finite element research on prestressed concrete containment under inner pressure

Xue Rongjun1, Wang Hongliang1, Chu Meng1, Xiong Xueyu2,3, Luo Gang1, Ge Honghui1

(1 Shanghai Nuclear Engineering Research & Design Institute, Shanghai 200233, China; 2 Institute of Prestressed Structures, Tongji University, Shanghai 200092, China; 3 Key Laboratory of  Advanced Civil Engineering  Materials(Tongji University),Ministry of Education, Shanghai 200092, China)

Abstract:The mechanical properties of prestressed concrete containment under pressure exceeding design reference requirement were studied by the finite element software ABAQUS. Concrete damaged plasticity  model and multi-segment line constitutive model of steel considering strength in post-yielding stage were used to establish refined model considering geometric nonlinear factors of strobe holes, haunch region and buttress, as well as the differences of prestressed tendon, common reinforcement and steel backing in different regions. The development laws of all indicators along with the inner pressure increasing were obtained, which could provide some guidance for bearing capacity determination, structural design and safety assessment of prestressed concrete containment under internal pressure in the structure.

Keywords:prestressed concrete containment; pressure exceeding design reference requirement; concrete damaged plasticity model; nonlinear

 

作者簡(jiǎn)介：薛榮軍，助理工程師，Email：rongjunxue@126.com。