广西大学学报（自然科学版）
廣西大學學報（自然科學版）
엄서대학학보（자연과학판）
JOURNAL OF GUANGXI UNIVERSITY （NATURAL SCIENCE EDITION）
2015年
1期
1-10
,共10页
钢筋再生混凝土%单向板%双向板%取代率%有限元模拟%受力性能
鋼觔再生混凝土%單嚮闆%雙嚮闆%取代率%有限元模擬%受力性能
강근재생혼응토%단향판%쌍향판%취대솔%유한원모의%수력성능
reinforced recycled coarse aggregate concrete%one-way floor slab%two-way floor slab%replacement ratio%numerical simulation%mechanical performance
为研究钢筋再生混凝土板的受力性能，在试验研究的基础上，通过ABAQUS有限元软件对试验试件进行模拟分析，证实了数值模拟的可行性。在此基础上，以再生粗骨料取代率、配筋率和板厚为变化参数，通过增设26个有限元模型进行系统性的模拟计算，并探讨了钢筋再生混凝土单向板承载能力的计算方法。研究结果表明：数值模拟结果符合工程实际要求；单向及双向板的极限承载力均随再生粗骨料取代率的增加而降低；配筋率的变化对单向板受力过程几乎无影响，而增大配筋率则对双向板极限承载力的提高将产生有利影响但影响不甚明显；增加板厚能显著提高两类板的承载能力、初始刚度及能量耗散能力。考虑再生粗骨料取代率的影响，对现行规范关于钢筋混凝土单向板承载力计算公式予以修正。
為研究鋼觔再生混凝土闆的受力性能，在試驗研究的基礎上，通過ABAQUS有限元軟件對試驗試件進行模擬分析，證實瞭數值模擬的可行性。在此基礎上，以再生粗骨料取代率、配觔率和闆厚為變化參數，通過增設26箇有限元模型進行繫統性的模擬計算，併探討瞭鋼觔再生混凝土單嚮闆承載能力的計算方法。研究結果錶明：數值模擬結果符閤工程實際要求；單嚮及雙嚮闆的極限承載力均隨再生粗骨料取代率的增加而降低；配觔率的變化對單嚮闆受力過程幾乎無影響，而增大配觔率則對雙嚮闆極限承載力的提高將產生有利影響但影響不甚明顯；增加闆厚能顯著提高兩類闆的承載能力、初始剛度及能量耗散能力。攷慮再生粗骨料取代率的影響，對現行規範關于鋼觔混凝土單嚮闆承載力計算公式予以脩正。
위연구강근재생혼응토판적수력성능，재시험연구적기출상，통과ABAQUS유한원연건대시험시건진행모의분석，증실료수치모의적가행성。재차기출상，이재생조골료취대솔、배근솔화판후위변화삼수，통과증설26개유한원모형진행계통성적모의계산，병탐토료강근재생혼응토단향판승재능력적계산방법。연구결과표명：수치모의결과부합공정실제요구；단향급쌍향판적겁한승재력균수재생조골료취대솔적증가이강저；배근솔적변화대단향판수력과정궤호무영향，이증대배근솔칙대쌍향판겁한승재력적제고장산생유리영향단영향불심명현；증가판후능현저제고량류판적승재능력、초시강도급능량모산능력。고필재생조골료취대솔적영향，대현행규범관우강근혼응토단향판승재력계산공식여이수정。
In order to reveal the mechanical performs of reinforced recycled coarse aggregate con-crete floor-slabs, an extended analysis of numerical simulation using ABAQUS software is conducted based on the test results. The feasibility of the numerical simulation is verified by comparing the simulation and test results for the mechanical performance of 6 reinforced recycled coarse aggregate concrete slab specimens. On this basis, 26 expanded numerical models are built to conduct system-atical finite-element simulation and to explore the bending strength calculation method for one-way and two-way floor-slabs. The parameters of the models are: coarse aggregate replacement ratio, thickness of slab and stirrup ratio. It can be concluded that the numerical simulation results agree <br> well with the test ones. The ultimate bearing capacity is likely to decrease with the increase of the replacement ratio for the slabs. For the two-way slab, the ultimate bearing capacity slightly increases with the growth of stirrup ratio, whereas for the one-way slab, the varying of stirrup ratios has no in-fluence on the bearing capacity. The bearing capacity increases remarkably with the augmentation of the thickness of the slabs, as well as the initial rigidity and energy dissipation capacity. Considering the influence of aggregate replacement ratio, the present bearing capacity calculation formulas for concrete slab based on the code are amended.
