Posts tagged ‘剪力墙’

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结构设计,结合工程,学习规范,特一级剪力墙、筒体墙应符合下列规定(JGJ3 — 2010, 3.10.5

(1)底部加强部位的弯矩设计值应乘以 1.1 的增大系数,其他部位的弯矩设计值应乘以1.3的增大系数;底部加强部位的剪切力设计值,应按考虑地震组合的剪力计算值的1.9倍采用,其他部位的剪力设计值,应按考虑地震作用组合的剪力计算值的1.4倍采用。( PS. 提高特一级构件的抗弯和抗剪承载能力,底部加强区的抗弯提高程度较非底部加强区小,底部加强区的抗剪提高程度较非底部加强区大 )

(2)一般部位的水平和竖向分布钢筋最小配筋率应取为0.35%,底部加强部位的水平和竖向分布钢筋的最小配筋率应取为0.40%

(3)约束边缘构件纵向钢筋最小构造配筋率应取为1.4%,配箍特征值宜增大20%;构造边缘构件纵向钢筋的配筋率不应小于1.2%

(4)框支剪力墙结构的落地剪力墙底部加强部位边缘构件宜配置型钢,型钢宜向上、下各延伸一层。

(5)连梁的要求同一级。


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剪力墙的底部加强部位是我国抗震设计规范的一个概念。以下摘自 《高层建筑混凝土结构设计规程》JGJ 3—2010

抗震设计时,剪力墙底部加强部位的范围,应符合下列规定:

1 底部加强部位的高度,应从地下室顶板算起;

2 底部加强部位的高度可取底部两层墙体总高度的1/10二者的较大值,部分框支剪力墙结构底部加强部位的高度应复合规程10.2.2条的规定(带转换层的高层建筑结构,其剪力墙底部加强部位的高度应从地下室顶板算起,宜取至转换层以上两层且不宜小于房屋高度的1/10。)。

3 当结构计算嵌固端位于地下以下一层底板或以下时,底部加强部位宜延伸到计算嵌固端

抗震设计时,为保证剪力墙底部出现塑性铰后具有足够大的延性,应对可能出现塑性铰的部位加强抗震措施,包括提高其抗剪切破坏的能力,设置约束边缘构件等,该加强部位称为“底部加强部位”。剪力墙底部塑性铰出现都有一定的范围,一般情况下单个塑性铰发展高度约为墙肢截面高度hw,但是为安全起见,设计时加强部位范围应适当扩大。规程统一以剪力墙总高度的1/10与两层层高二者的较大值作为加强部位。第三款明确了当地下室整体刚度不足以作为结构嵌固端,而计算嵌固部位不能设置在地下室顶板时,剪力墙底部加强部位的设计要求宜延伸至计算嵌固部位。


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论文整理。

 

【Title】

Deformation Limits of L-Section RC Shear Walls

【Authors】 Cui Ji-Dong 1 , Han Xiao-Lei 1,2,* , Yang Wan 1 and Li Wei-Chen 1
【Address 1 School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, Guangdong, 510641, P.R. China
2 State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou, Guangdong, 510641, P.R. China
【Abstract】 In order to establish the relation between damage state and member deformation of the L-section RC shear wall, 216 FE models designed to meet the requirements of the Chinese codes were set up. The analysis fully considers the variation of parameters including axial load ratio and shear span ratio etc. According to the results, criteria of classifying failure modes of L-section RC shear walls are proposed. Failure modes are determined by shear-span ratio, moment-shear ratio and end columns’ reinforcement ratio. Deformation limits corresponding to respective performance levels are put forward. Fitted formulas of calculating the limits are also presented. It is shown that the categorization criteria are reliably accurate in predicting failure modes. Deformation limits of a given L-section RC shear wall could be determined via axial load ratio and moment-shear ratio. The fitted formulas possess a satisfactory correlation with numerical results.
【Keywords】 Deformation limits, Finite element analysis, Failure modes, L-section, RC shear wall.
【Journal】 The Open Civil Engineering Journal , 2016

TOCIEJ-journal-cover

Deformation limits of L-section RC shear walls

 

  • 程序图标 ( Program Icon ):

           FiberShearWall

  • 程序介绍 ( Program Introduction):

    针对PERFORM-3D软件的RC剪力墙纤维截面剖分小工具。程序通过导入文本参数(.csv),直接生成纤维截面的参数,并导出PERFORM-3D需要的二进制文件(.PF3CMP)。然后通过PERFORM-3D导入.PF3CMP文件完成繁琐的纤维截面输入工作,节省你的时间。

   This program is used for the data input of the “Inelastic Fiber Shear Wall Section” in PERFORM-3D. Through the import of section properties in text format (.csv), the program can generate the fiber section properties automatically. And then, the program export the binary data input file (.PF3CMP) for “Inelastic Fiber Shear Wall Section” which PERFORM-3D can then read to complete the fiber section definition. This program will definitely save you time on the input of the structural fibers. 

  • 程序界面 ( Program Interface )

RCRECTFiberWal

RCRECTFiberWalAbout

  • 程序说明 ( Program Help ):

 程序的使用步骤:

(1)填写纤维截面文本参数。

(2)导入参数文本文件,检查纤维截面数据。

(3)导出纤维截面二进制文件。

(4)打开PERFORM-3D,导入二进制文件,完成纤维截面定义。

The overall steps are as follows.

(1) Prepare section properties in text format.

(2) Import the text file and check the fiber section properties generated by the program.

(3) Export the binary data input file (.PF3CMP) for “Inelastic Fiber Shear Wall Section”.

(4) Open PERFORM-3D and import the binary data input file to complete the definition of the fiber section properties .

  • 程序下载 ( Program Download ):

 (非免费软件,暂不提供下载)

  • 注释 ( Comments ):

  ( 如果你发现软件有bug或者软件使用有问题,请联系我!邮箱:jidong_cui@163.com)

  ( If  you have found any bug in the program or have any problem when using the program, please don’t hesitate to contact me directly.  Email : jidong_cui@163.com)

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