CAJ | 학술논문

为研究腹板开洞连续组合梁的承载力及受力性能，对5根腹板开洞组合梁和1根腹板无洞组合梁进行了试验研究，对7根组合梁进行了有限元模拟计算。研究的变化参数为混凝土板厚、配筋率、洞口尺寸和洞口位置。结果表明：增加混凝土板厚度可以提高组合梁的承载能力，配筋率增加能大幅提高组合梁的变形能力。随着洞口宽度和高度的增加，组合梁承载能力相应减小，带洞跨挠度增大。洞口位置对开洞组合梁的承载力和变形影响较大，洞口布置在集中荷载作用点之外对组合梁受力比较有利。另外，开洞使混凝土板承担了大部分剪力，钢梁仅承担少部分的剪力。
위연구복판개동련속조합량적승재력급수력성능，대5근복판개동조합량화1근복판무동조합량진행료시험연구，대7근조합량진행료유한원모의계산。연구적변화삼수위혼응토판후、배근솔、동구척촌화동구위치。결과표명：증가혼응토판후도가이제고조합량적승재능력，배근솔증가능대폭제고조합량적변형능력。수착동구관도화고도적증가，조합량승재능력상응감소，대동과뇨도증대。동구위치대개동조합량적승재력화변형영향교대，동구포치재집중하재작용점지외대조합량수력비교유리。령외，개동사혼응토판승담료대부분전력，강량부승담소부분적전력。
Thirteen continuous composite beams are studied in order to investigate their mechanical behavior and load -carrying capacity.Five beams with web openings and one beam without web openings are tested under two point symmetrical concentrated static loads.Meanwhile,seven beams with web openings are simulated using the finite element package ANSYS.The main points in this paper are the concrete slab thickness and reinforcement ratio,the opening size and the location of web openings.The results show that with the increase of slab thickness and the reinforcement ratio,the load carrying capacity and the deformation capacity of beams with web openings increase,respectively.With the increase of the width and height of the hole,the load carrying capacity of the beams reduces and the deflection of web opening region increases accordingly.The results also show that the lo-cation of hole has a notable influence on the mechanical property of composite beams.Additionally,the concrete slab contributes mainly to the cross sectional total shear in the web opening region.