某高速公路隧道的爆破振动对邻近民房开裂的影响分析

摘要

A systematic analysis and discussion of the causes of house cracking are conducted by testing the blast vibration velocity of typical neighboring houses,analyzing the types of house cracking,monitoring the characteris-tics of house cracks and calculating the temperature stress at the roof and wall based on an assessment of highway tunnel blasting vibrations leading to cracking of neighboring houses.The results show that the main cause of house cracking adjacent to the tunnel is temperature stress,not blasting vibration.%文章以某高速公路隧道施工爆破振动导致邻近房屋开裂的评估工程为依托,通过爆破期间对邻近典型房屋的爆破振速测试、房屋裂缝的形态分析、性状监测和屋顶墙体温度应力计算等方法,对房屋裂缝成因进行了系统地分析和讨论.研究结果表明:该隧道邻近房屋的裂缝主要由温度变形引起,爆破施工不是邻近房屋产生裂缝的主要原因.