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Ⅱ地道出入口結构計算 (1)出入口結构构造与计算原則 出入口结构分以下六部分: (一)阶梯式单向出入口敞口段,简称“梯段”。 (二)阶梯式单向出入口封闭段,简称“梯闭段”。 (三)出入口与洞身连接转角部分,简称“轉角”。 (四)斜坡式尽端出入口敞口段,簡称“坡敞段”。 (五)斜坡式尽端出入口封閉段。簡称“坡闭段”。 (六)扩建端端板,简称“短板”旅客由站台进入地道洞身以前,亦通过出入口的阶梯或斜坡道方能下降到洞身的标高。开始通过的一段出入口为敞口的(?)形结构,侧墙按底部固定頂端自由的悬臂板計算,底板按弹性地基上的截条計算。荷载除考虑站台填土及400kg/m~2人流活载外,还要考虑出入口
II. Calculation of tunnel entrance structure (1) Structure of entrance and exit structure and calculation principle The entrance and exit structure is divided into the following six parts: (1) The stepwise one-way entrance opening section, referred to as “ladder section”. (b) A stepped one-way entrance closed section, referred to as “ladder closed section”. (3) The corner part of the entrance and exit of the cave body, referred to as the “corner corner”. (d) The slope-style end-entry opening section, referred to as the “slope-opening section”. (e) Sloped end-of-entry closed sections. Referred to as “Slope closed segment”. (6) The expansion of the terminal board, short for “short board” passengers, can also be reduced to the elevation of the tunnel body through the stairway or ramp of the entrance before the platform enters the tunnel body. The first section of the entrance that passes through is an open (?)-shaped structure. The side wall is calculated according to the free cantilevered plate at the bottom fixed top end, and the bottom plate is calculated according to the interception on the elastic foundation. In addition to the consideration of site loading and live load of 400kg/m2, the load must also be considered