Effects of opening configuration on nonlinear dynamic response of reinforced concrete walls | |
| Author | Meranzai, Mehria Tokhy |
| Call Number | AIT Thesis no.ST-11-01 |
| Subject(s) | Concrete walls Reinforced concrete construction |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ST-11-01 |
| Abstract | To provide good resistance and stiffness against lateral loads, RC walls can be used in medium to high rise buildings. Commonly openings are present in RC walls for prerequisite of services doors and windows. These openings may affect the behavouir of the wall especially under earthquake loads. This study is conducted to investagate the effects of opening configurations for non linear dynamic response of RC walls. Five walls with different opening configurations are selected. These are walls without openings, regular openings, irregular openings, staggered openings and openings with overlaps with two different numbers of stories (10,20). Fmthermore this study also investagate the effects of opening variations according to the wall area with three different percentage of reinforcement (0.5%, 0.8%, I%) and opening sizes (10%, 20%,30% of wall area). Non linear layered shell element modeling technique has been used to capture the nonlinear behavior of these walls. Then the analysis results of all these walls are presented in terms of base shear, top displacement, envelops of inter story shear, moment and displacement. And then all these structural response are compared together to find out the desirable and undesirable opening configurations in RC walls. From the analysis result it is obtained that increasing the size of the opening greatly affects the strength and drift of the walls under seismic loading. Larger the size of the openings will give less shear demand and more displacement value in the structural walls. Increasing the amount of the reinforcement in 10 story walls with different size and arrangement of opening may increase the shear demand but not s ignificantly. |
| Keyword | RC walls with regular openings; irregular opening, staggered openings; opening with overlaps; nonlinear layered shell e lements; nonlinear direct integration time history analysis. |
| Year | 2011 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-11-01 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Pennung Warnitchai;Anwar, Naveed |
| Examination Committee(s) | Punchet Thammarak |
| Scholarship Donor(s) | AIT Fellowship;Balkh University, Afghanistan |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2011 |