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 北京工業(yè)大學城市與工程安全減災教育部重點實驗室， 北京 100124；

2 石家莊經(jīng)濟學院勘查技術與工程學院， 石家莊 050031）

［摘要］基于8個不同截面尺寸鋼筋混凝土柱的單調(diào)加載試驗，采用有限元軟件ABAQUS對其進行了彎剪性能尺寸效應分析。通過合理選擇材料本構(gòu)關系及破壞準則，有限元分析得到的荷載位移關系曲線與試驗結(jié)果吻合較好。在此基礎上進行了參數(shù)拓展分析，研究了截面尺寸和配箍形式對大截面尺寸的鋼筋混凝土柱彎剪性能的影響，結(jié)果表明：當截面邊長超過700mm時，試件的彎剪性能仍然存在尺寸效應，但隨著截面尺寸的增大，尺寸效應減弱；減小箍筋直徑和間距可以減弱尺寸效應對試件彎剪性能的影響。

［關鍵詞］鋼筋混凝土柱； 彎剪性能； 尺寸效應； 有限元分析； 參數(shù)分析

中圖分類號：TU375.3      文獻標識碼：A      文章編號：1002-848X(2015)08-0046-04

Nonlinear finite element analysis on size effect of flexural and shear behavior for reinforced concrete columns

Xie Yongping1,2, Li Zhenbao1, Du Xiuli1, Ma Hua1

 (1 The Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education,Beijing University of Technology, Beijing 100124, China; 2 College of Exploration Technology and Engineering，Shijiazhuang University of Economics，Shijiazhuang 050031, China)

Abstract:Eight reinforced concrete columns with different section sizes under monotonic horizontal loading were tested, and nonlinear finite element models were used to analyze the size effect of flexural and shear behavior by ABAQUS. By reasonably selected material stressstrain relations and failure criteria, the loaddeflection curves by finite element analysis show good agreement with the experimental result. Then, some factors were analyzed to investigate the effects of section size and stirrup form on  flexural and shear behavior for reinforced concrete columns with large section sizes. The results show that the size effect on mechanical behavior for reinforcement concrete column remains apparent, however the magnitude of the influence gradually become smaller when the section size is more than 700mm. Small stirrup diameter and spacing can be regard as a method to reduce the size effect on mechanical behavior of specimens.

Keywords:reinforced concrete column; flexural and shear behavior; size effect; finite element analysis; parametric analysis

*國家自然科學基金項目(50838001,51178014，51408378)，中國博士后科學基金資助項目（2014M560033），河北省自然科學基金資助項目（E2015403018）。

作者簡介：解詠平，博士，講師，Email:axypa@163.com。

                          參考文獻

［1］車軼,鄭新豐,王金金,等.單調(diào)荷載作用下高強混凝土梁受彎性能尺寸效應研究［J］.建筑結(jié)構(gòu)學報,2012,33(6):96102.

［2］巖下善行,中西三和,白井申明，等.鉄筋コンクリート造梁の力學的性能に及ぼす寸法効果に関する研究［C］//日本建築學會構(gòu)造系論文集,2008:625 632.

［3］SENER S, BARR B I G, ABUSIAF H F. Size effect in axially loaded reinforced concrete columns［J］. Journal of Structural Engineering,  2004,130(4):662670.

［4］KOC V, SENER S. Size effect in normal and highstrength concrete with different notches under the axial load ［J］. Journal of Materials in Civil Engineering, 2009,21(9):433445.

［5］宋佳,李振寶,杜修力,等.圓形箍筋約束混凝土力學性能尺寸效應試驗［J］.解放軍理工大學學報:自然科學版,2012,13(5):538543.

［6］GB 50010—2010混凝土結(jié)構(gòu)設計規(guī)范［S］.北京:中國建筑工業(yè)出版社,2011.

［7］周紅.混凝土強度尺寸效應的實驗研究［D］.大連：大連理工大學,2010.