Khảo sát ảnh hưởng của mô hình hóa sàn lõi rỗng sử dụng phần mềm ETABS tới phản ứng động học của nhà nhiều tầng

Hoàn, Phạm Thái; Đạt, Hồ Thành; Thắng, Nguyễn Trường

doi:10.31814/stce.nuce2020-14(2v)-04

Cited by 1 publication

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“…In order to clarify the influence of temperature load on structural design of RC structures, especially for structures with large plan, 3 RC frame building models namely S1, S2, and S3 with the same structure but different lengths are analyzed and evaluated using Etabs software. Note that Etabs software is used for building structural analysis in many studies [16,17]. Five-storey RC frame buildings with 9 m regular grid of columns in both directions X and Y on rectangular plan are used.…”

Section: Design Of Rc Structures With Temperature Loadmentioning

confidence: 99%

Effect of uniform temperature load on design of long reinforced concrete structures without expansion joints

Pham

Tuan²

2021

STCE

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This study presents an investigation on the design of long reinforced concrete (RC) structures subjected to uniform temperature load by considering three RC frame building models with different lengths of 45 m, 135 m, and 270 m using Etabs. The uniform temperature load is considered being the change from the annual average highest to lowest air temperature at the construction site in the case of unavailable temperature data of concrete. The analysis results indicate that the uniform temperature load mainly influences on the internal forces of RC members at storey 1 and slightly effects on the internal forces of RC members at storey 2. For short-length RC structures, the effect of temperature load can be ignored in the design of RC elements, whereas it must be taken into account in design of slab, beams and some column positions at storey 1 of medium-length and long RC structures without expansion joints. For the present RC frame building models, the required slab reinforcement in long direction increases about 33.4% for medium-length RC structures (135 m) and about 48.2% for long RC structures (270 m) without expansion joints. The required reinforcement for positive moment at mid-span increases from 33.7 to 39.4%, whereas the total required reinforcement for negative moment at the supports of beams increases from 19.4 to 34.9% in long direction of 270 m long RC structures without expansion joints due to uniform temperature load. Column design of long RC structures without expansion joints under uniform temperature load must be concerned, especially for columns in the corners.

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Section: Design Of Rc Structures With Temperature Loadmentioning

confidence: 99%