“释能法”加固混凝土拱桥安全性评价及现场试验与仿真分析

摘要

In order to analyse the influence of the“energy‐released method” reinforcement on the safety factor of bridge ,this paper use field test and simulation calculation to evaluate safety of the stone arch bridge in the southwest China .The result shows that the measured values of strain and deflection de‐crease after reinforcement under live‐loads .The bear capacity of live‐load is also improved after rein‐forcement .The bear capacity of stone arch bridge meet the requirement of high bridge load of gradeⅠ .T he result show s that the use of “energy‐released method” enhance bear capacity of stone arch bridge can be achieved .%通过现场试验和仿真计算对西南地区某混凝土拱桥进行了安全性评价分析。结果表明，在活载作用下，加固后各测试截面的应变、挠度实测值与理论计算值均比加固前量值有所减小，截面承受活载能力有所提高，加固后的桥梁承载能力满足公路Ⅰ级荷载的要求，充分证明采用“释能法”提高混凝土拱式桥梁的承载力是完全可行的。