【摘要】 碳化是影响混凝土结构老化的重要因素。应用蒙特卡罗法来研究葠窝水库6号、8号坝段工作桥纵梁的碳化问题。从碳化寿命准则和锈胀开裂寿命准则预测其使用寿命。结果表明:在使用110年时,6号坝段工作桥纵梁的碳化深度到达钢筋表面,使用142年时,出现了锈胀裂缝;在使用130年时,8号坝段工作桥纵梁的碳化深度到达钢筋表面,钢筋开始发生锈蚀,使用160年时,出现了锈胀裂缝,结构开始开裂。更多还原

【Abstract】 Carbonization is an important factor affecting the aging of concrete structure. The carbonization problems of girders in No. 6 and 8 monolith of Shenwo Reservoir are studied respectively by using Monte Carlo method, and its service life is predicted from carbonation life criterion and corrosive cracking life criterion. The results show that:( a) the carbonation depth of the girder in No. 6 monolith will reach the surface of steel after servicing for 110 years, and after 142 year service, the corrosive cracks will appear; and( b) for the girder in No. 8 monolith, the times are 130 years and 160 years respectively.更多还原