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重力式挡土墙设计方案有哪些_其他_设计456问答
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重力式挡土墙设计方案有哪些

浏览:36次 | 提问时间: 07-30 10:27
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6个答案
人潮没有你 07-30 10:28

筋混凝土结构设计,则是对已确定的墙身截面尺寸,进行内力计算和设计钢筋。在配筋设计时,可能会调整截面尺寸,特别是墙身的厚度。一般情况下这种墙身厚度的调整对整体稳定影响不大,可不再进行全墙的稳定验算。悬臂式挡土墙,一般也以墙长方向取一延长米计算。

你从不主动 07-30 10:37

挡土墙在墙后填土土压力作用下,必须具有足够的整体稳定性和结构的强度。设计时应验算挡土墙在荷载作用下,沿基底的滑动稳定性,绕墙趾转动的倾覆稳定性和地基的承载力。当基底下存在软弱土层时,应当验算该土层的滑动稳定性。在地基承载力较小时,应考虑采用工程措施,以保证挡土墙的稳定性。

第九个未来被时光消磨 07-30 10:45

墙高不宜超过12m,干砌挡土墙的高度不宜超过6m  .高速公路、一级公路不应采用干砌挡土墙。  根据建筑地基基础设计规范GB50007-2002  重力式挡土墙须做。

薄荷凉情 07-30 10:53

重力式挡土墙是以挡土墙自身重力来维持挡土墙在土压力作用下的稳定。它是我国目前常用的一种挡土墙。重力式挡土墙可用石砌或混凝土建成,一般都做成简单的梯形。施工要求一、挡土墙明挖基础施工应符合下列规定:1、当基础开挖较深或边坡稳定性较差时,应分段、跳槽开挖,并采取临时支护措施。2、临时弃土或堆放材料距坑边的距离不应小于2m,机械行驶不得影响施工安全。3、基坑应随基础施工分层回填夯实,顶面做成向外不小于4%的排水坡。二、墙身施工应符合下列规定:1、墙面应平顺整齐,墙顶排水及防渗设施应及时施作。2、泄水孔应在砌筑墙身时留置,必须保持排水通畅。3、墙背拆模时,应在墙背侧设置必要的临时支撑。三、重力式挡土墙施工应按下表进行检查,并认真填写检查记录表。对检查中发现的不符合规定的情况,应签发安全检查整改通知单,限期整改,并*验证。重力式挡土墙施工作业安全检查表

因为了解 07-30 11:02

某I级重型双线铁路,旅客列车设计行车速度140km/h,  某段路堤处于直线地段,根据实际情况,需设置重力式挡土墙。已知设计要求为:墙型为路堤墙,墙身材料为片石混凝土,墙后填料为砾石土,墙高为9.6米,其中路堤墙设定挡土墙上部有2米高的路堤填土。  设计方法与设计内容(1)拟定挡土墙的结构形式及断面尺寸(2)拟定挡土墙基础的形式及尺寸(3)列车荷载(4)土压力计算(5)稳定性验算(6)抗滑稳定性(7)抗倾覆稳定性(8)基底应力验算(9)截面应力验算(10)绘制挡土墙平面图、纵断面、横断面的布置图。要求是仰斜的!!!  谢谢了,做完分就给!有什么不懂加我Q吧  806901754

十年浮夸终成孤独患者一个人过 07-30 11:10

重力式挡土墙是以挡土墙自身重力来维持挡土墙在土压力作用下的稳定。它是我国目前常用的一种挡土墙。重力式挡土墙可用石砌或混凝土建成,一般都做成简单的梯形。重力式挡土墙,指的是依靠墙身自重抵抗土体侧压力的挡土墙。重力式挡土墙可用块石、片石、混凝土预制块作为砌体,或采用片石混凝土、混凝土进行整体浇筑。半重力式挡土墙可采用混凝土或少筋混凝土浇筑。重力式挡土墙可用石砌或混凝土建成,一般都做成简单的梯形。它的优点是就地取材,施工方便,经济效果好。所以,重力式挡土墙在我国铁路、公路、水利、港湾、矿山等工程中得到广泛的应用。由于重力式挡土墙靠自重维持平衡稳定,因此,体积、重量都大,在软弱地基上修建往往受到承载力的限制。如果墙太高,它耗费材料多,也不经济。当地基较好,挡土墙高度不大,本地又有可用石料时,应当首先选用重力式挡土墙。重力式挡土墙一般不配钢筋或只在局部范围内配以少量的钢筋,墙高在6m以下,地层稳定、开挖土石方时不会危及相邻建筑物安全的地段,其经济效益明显。

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