【摘要】：本課題組前期完成的剪跨比為1.0的內置豎向型鋼混凝土低矮剪力墻的試驗研究發(fā)現(xiàn),在剪力墻中部配置豎向型鋼能夠有效地阻斷低矮剪力墻對角主斜裂縫的開展,提高了墻體的變形性能。為進一步提高低矮剪力墻的極限變形能力,本文在墻體中部配置豎向型鋼的基礎上,提出了在墻體底部增設鋼板帶的加強方案,擬通過鋼板帶和內置豎向型鋼組成橫、縱向約束,達到進一步改善內置豎向型鋼混凝土低矮剪力墻抗震性能的目的。本文設計和完成了2片剪跨比為1.0的鋼板帶加強型內置豎向型鋼混凝土低矮剪力墻低周往復水平加載試驗,并與1片未設置鋼板帶的內置豎向型鋼混凝土低矮剪力墻試驗進行對比分析,研究不同鋼板帶設置方式對剪力墻抗震性能的影響,應用有限元軟件VecTor2模擬了鋼板帶加強型型鋼混凝土低矮剪力墻水平加載全過程。本文得出的主要結論如下:(1)鋼板帶的適當設置能進一步改善內置豎向型鋼混凝土低矮剪力墻的變形性能,使破壞區(qū)分布更加均勻,試件的總耗能提高70%左右,極限位移角提高20%左右,并大于1/100。(2)鋼板帶的設置能提高內置豎向型鋼混凝土低矮剪力墻的承載力。(3)剪力墻底部鋼板帶設置的數(shù)量不能過多,鋼板帶對剪力墻的約束從墻底到墻頂應該滿足由強到弱的漸變規(guī)律,避免底部約束過強形成局部剛性區(qū)域,導致墻體的集中破壞區(qū)域上移,影響墻體整體變形能力的發(fā)揮。(4)有限元軟件VecTor2模擬鋼板帶加強型型鋼混凝土低矮剪力墻試件的結果與試驗擬合較好。
[Abstract]:The experimental study on the low-rise shear wall with a shear span ratio of 1.0 completed by our research group shows that the vertical steel in the middle of the shear wall can effectively block the development of diagonal main diagonal cracks in the low shear wall. The deformation property of the wall is improved. In order to further improve the ultimate deformation capacity of low shear wall, this paper puts forward a strengthening scheme of adding steel strip to the bottom of the wall on the basis of the vertical section in the middle of the wall. The longitudinal constraint can further improve the seismic performance of the built-in vertical steel reinforced concrete low-rise shear wall. In this paper, two steel plates with a shear span ratio of 1.0 are designed and tested under low cycle reciprocating horizontal loading. And compared with the test of a built-in vertical steel reinforced concrete shear wall without steel strip, the influence of different steel plate and strip setting methods on the seismic behavior of shear wall is studied. Finite element software VecTor2 is used to simulate the whole process of horizontal loading of steel strip reinforced steel reinforced concrete low rise shear wall. The main conclusions obtained in this paper are as follows: (1) the proper setting of steel strip can further improve the deformation performance of the low-rise shear wall with built-in vertical steel reinforced concrete, make the distribution of the failure zone more uniform, and the total energy consumption of the specimen is increased by about 70%. The ultimate displacement angle is increased by about 20% and is more than 1 / 100. (2) the setting of steel strip can improve the bearing capacity of the built-in vertical steel reinforced concrete low shear wall. (3) the number of steel plate belts at the bottom of the shear wall should not be too large. The restraint of steel strip on the shear wall from the bottom of the wall to the top of the wall should satisfy the law of gradual change from strong to weak, so as to avoid the local rigid region formed by the over-strong constraint at the bottom of the wall, which leads to the upward movement of the concentrated failure area of the wall. (4) the finite element software VecTor2 is used to simulate the specimen of steel reinforced concrete low shear wall with reinforced steel sheet, and the results fit well with the test results.
【學位授予單位】：重慶大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TU398.2;TU352.11

【相似文獻】

相關期刊論文 前10條

1 曲恒緒;型鋼混凝土結構計算方法的比較[J];安徽建筑;2003年06期

2 朱s，

本文編號：2233622