【摘要】 根据武罐高速公路宋家山隧道洞口段围岩的实际情况,应用数值模拟方法着重讨论注浆加固洞口段围岩的抗震性能。并分析不同超越概率地震动作用下,隧道洞口段在不同注浆加固范围时的地震动力响应特点,继而提出了相应的围岩注浆加固范围建议值,可供同类情况注浆加固参考。更多还原

【Abstract】 According to the surrounding rock situation of Songjiashan tunnel portal section in Wuguan expressway,the tunnel portal surrounding rock seismic performance by grouting reinforcement was analyzed by using numerical simulation method,the earthquake dynamic response characteristics of tunnel portal section in different grouting reinforcement range and different exceedance probability seismic dynamic effect was analyzed,then the suggested grouting reinforcement range of surrounding rock was proposed,which could provide a reference for similar project.更多还原