CAJ | 학술논문

为探讨PC(预应力混凝土)连续刚构桥开裂及下挠的原因,提出了基于结构性能的损伤分析方法.该方法立足于结构性能的客观表象,把对可能造成损伤的诸多因素对结构性能水平的影响分析作为主要手段;通过对大量理论计算与试验数据的对比分析,以基于实桥检测和荷载试验的性能水平参数作为评判依据,找出造成损伤的因素及其达到的程度,同时获得损伤桥梁较为真实的性能水平,作为可靠性评估和加固设计的依据.通过对一座跨径160 m的PC连续刚构桥基于性能的损伤分析,结果表明:用该方法,结构挠度的校验系数可达0.9.
위탐토PC(예응력혼응토)련속강구교개렬급하뇨적원인,제출료기우결구성능적손상분석방법.해방법립족우결구성능적객관표상,파대가능조성손상적제다인소대결구성능수평적영향분석작위주요수단;통과대대량이론계산여시험수거적대비분석,이기우실교검측화하재시험적성능수평삼수작위평판의거,조출조성손상적인소급기체도적정도,동시획득손상교량교위진실적성능수평,작위가고성평고화가고설계적의거.통과대일좌과경160 m적PC련속강구교기우성능적손상분석,결과표명:용해방법,결구뇨도적교험계수가체0.9.
In order to find out the causes of the cracking and deflection of PC (prestressed concrete)continuous rigid frame bridges, a damage analysis method based on structure performance was proposed. In this method, the objective manifestations of structure performances are considered as the focus of attention, and the analysis of damage factors for structure performances is as the primary means. By comparing a large number of theoretical and test data and using load test data as a judgment basis to identify damage elements and damage degree, a more realistic performance level of a damaged bridge is obtained, and this performance level can be used as the basis of reliability evaluation and strengthening design. The damage analysis of a PC rigid frame bridge with a span of 160 m, as an example, shows that with the proposed method, the check coefficient of deflection can reach to 0.9.