土木工程学报
土木工程學報
토목공정학보
CHINA CIVIL ENGINEERING JOURNAL
2001年
2期
7-10
,共4页
方东平%祝宏毅%耿川东%刘西拉
方東平%祝宏毅%耿川東%劉西拉
방동평%축굉의%경천동%류서랍
钢筋混凝土结构%施工期%现场实测%荷载重新分配
鋼觔混凝土結構%施工期%現場實測%荷載重新分配
강근혼응토결구%시공기%현장실측%하재중신분배
通过现场实测,力图全面准确地把握钢筋混凝土结构在施工期的基本特征.特别介绍在施工现场采用多种量测手段较全面地对结构施工过程中的荷载、材料、内力、变形等特征进行的全周期量测,以及捕捉到的重要现象.通过对现场实测数据的分析和讨论,获得了结构在施工过程中的基本特征以及荷载传递的规律.发现楼板随着新浇混凝土强度和刚度的增长,在环境温度变化、混凝土早期徐变等作用下,将逐渐承担其结构自重,从而使整个结构的荷载不断地进行重新分配.
通過現場實測,力圖全麵準確地把握鋼觔混凝土結構在施工期的基本特徵.特彆介紹在施工現場採用多種量測手段較全麵地對結構施工過程中的荷載、材料、內力、變形等特徵進行的全週期量測,以及捕捉到的重要現象.通過對現場實測數據的分析和討論,穫得瞭結構在施工過程中的基本特徵以及荷載傳遞的規律.髮現樓闆隨著新澆混凝土彊度和剛度的增長,在環境溫度變化、混凝土早期徐變等作用下,將逐漸承擔其結構自重,從而使整箇結構的荷載不斷地進行重新分配.
통과현장실측,력도전면준학지파악강근혼응토결구재시공기적기본특정.특별개소재시공현장채용다충량측수단교전면지대결구시공과정중적하재、재료、내력、변형등특정진행적전주기량측,이급포착도적중요현상.통과대현장실측수거적분석화토론,획득료결구재시공과정중적기본특정이급하재전체적규률.발현루판수착신요혼응토강도화강도적증장,재배경온도변화、혼응토조기서변등작용하,장축점승담기결구자중,종이사정개결구적하재불단지진행중신분배.
An attempt is made to study the characteristics of the reinforced concrete structures during construction. Some efforts are made to measure and to analyze the loads, the material properties, the internal forces in shores and slabs, and the displacements of the structural members during construction. We observe some phenomena and obtain some results that have not reported before. The fundamental characteristics and the rule of load transmission are obtained for a time-dependent structure. A freshly placed concrete slab is gradually to carry a part of its weight during a curing process. It causes that the construction loads re-distribute between the slab and the other parts of a Time-dependent structure.