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10秒装修报价 装修要花多少钱?获得精准报价,省钱30%
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挡土墙施工方案如下:
(一)重力式挡土墙重力式挡土墙靠自身重力平衡土体,一般型式简单、施工方便、圬工量大,对基础要求也较高。依据墙背型式不同,其种类有普通重力式挡墙、不带衡重台的折线墙背式重力挡墙和衡重式挡墙。衡重式挡墙属重力式挡墙;衡重台上填土使得墙身重心后移,增加了墙身的稳定性;墙胸很陡,下墙背仰斜,可以减小墙的高度和土方开挖;但基底面积较小,对地基要求较高。
(二)锚定式挡土墙锚定式挡土墙属于轻型挡土墙,通常包括锚杆式和锚定板式两种。锚杆式挡墙主要由预制的钢筋混凝土立柱和挡土板构成墙面、与水平或倾斜的钢锚杆联合作用支挡土体,主要是靠埋置岩土中的锚杆的抗拉力拉住立柱保证土体稳定的。锚定板式则将锚杆换为拉杆,在其土中的末端连上锚定板。它不适于路堑,路堤施工容易实现。
(三)薄壁式挡墙薄壁式挡土墙是钢筋混凝土结构,包括悬臂式和扶壁式两种主要型式。悬臂式挡土墙由立壁和底板组成,有三个悬臂,即立壁、趾板和踵板。当墙身较高时,可沿墙长一定距离立肋板(即扶壁)联结立壁板与踵板,从而形成扶壁式挡墙;老路加固时,考虑扶壁难以在踵板侧做,也可考虑将其做在趾板侧,同样可以发挥作用,但须进行设计计算确定。
(四)加筋土挡土墙加筋土挡土墙是由填土、填土中的拉筋条以及墙面板等三部分组成,它是通过填土与拉筋间的摩擦作用把土的侧压力削减到土体中起到稳定土体作用的。加筋土挡土墙属于柔性结构,对地基变形适应性大,建筑高度也可很大,适用于填土路基;但须考虑其挡板后填土的渗水稳定及地基变形对其的影响,需要通过计算分析选用。
(五)其它挡土墙柱板式挡土墙(沿河路堤及基坑开挖中常用)桩板式挡土墙(基坑开挖及抗洪中使用)垛式挡土墙(又称为框架式挡土墙)
首先选定你需要的挡土墙形式挡土墙主要看你需要挡土的高度高度决定形式,还有背后是山坡还是回填土根据规范进行设计,验算稳定性通过就可以
加筋挡土墙分类及适用范围:分类方法:结构形式,建筑材料,施工方法,所处环境条件。结构形式:重力式,半重力式,横重式,悬臂式,扶臂式,锚杆式,锚定板式,加筋挡土墙,板桩式,地下连续墙挡土墙必须保证结构安全,正常使用,满足下列要求:
1、挡土墙不能滑移;
2、挡土墙不能倾覆;
3、挡土墙墙身要有足够的强度;
4、挡土墙的基础要满足承载力的要求。重力挡土墙(按照土压力理论,仰斜墙背的主动土压力最小,而俯斜墙背的主动土压力最大,垂直墙背位于两者之间);永久荷载是只长期作用在挡土墙的不变荷载,如挡土墙的自重,土压力,水压力,浮力,地基反力及摩擦力等。可变荷载主要是指作用在挡土墙上的活荷载,动荷载,波浪压力,洪水压力及浮力,温度应力和地震作用等。常用的护坡类型及其设计植物防护;种草,种树;灌浆及勾缝防护;抹面防护;捶面护坡;喷浆及喷射混凝土;锚杆铁丝网喷浆及锚杆铁丝网喷射混凝土;单层于砌片石护坡;浆砌片石护坡加筋土挡土墙:是由墙面板,拉筋和填料三部分组成。其工作原理是依靠填料与拉筋之间的摩擦力,来平衡墙面所承受的水平土压力,并以拉筋填料的符合结构抵抗拉筋尾部填料所产生的土压力,从而保证挡土墙的稳定。深基坑支护结构的类型及适用条件常用的支护结构有:钢板桩,钢筋混凝土板桩,钻孔灌注桩,土钉墙和水泥土搅拌桩挡土墙强度破坏:倾覆破坏;向外隆起破坏;支护结构受弯破坏。稳定性破:坏墙后土体整体滑移失稳;坑底隆起破坏;管涌或流砂锚杆从传力机理上分,一般有锚头,拉杆,及锚固端三部分组成锚杆的工作原理:当锚杆的锚固端受力时,首先通过钢筋与周边的细石混凝土,再通过混凝土与孔壁土的摩擦力传到固端地层中。冠梁:悬臂式排桩支护在具体应用时一般在桩顶部浇筑一道压顶圈梁,作为安全储备,压顶圈梁一般成为冠梁。希望可以帮到您。
按结构分:
(一)重力式挡土墙重力式挡土墙靠自身重力平衡土体,一般型式简单、施工方便、圬工量大,对基础要求也较高。依据墙背型式不同,其种类有普通重力式挡墙、不带衡重台的折线墙背式重力挡墙和衡重式挡墙。衡重式挡墙属重力式挡墙;衡重台上填土使得墙身重心后移,增加了墙身的稳定性;墙胸很陡,下墙背仰斜,可以减小墙的高度和土方开挖;但基底面积较小,对地基要求较高。
(二)锚定式挡土墙锚定式挡土墙属于轻型挡土墙,通常包括锚杆式和锚定板式两种。锚杆式挡墙主要由预制的钢筋混凝土立柱和挡土板构成墙面、与水平或倾斜的钢锚杆联合作用支挡土体,主要是靠埋置岩土中的锚杆的抗拉力拉住立柱保证土体稳定的。锚定板式则将锚杆换为拉杆,在其土中的末端连上锚定板。它不适于路堑,路堤施工容易实现。
(三)薄壁式挡墙薄壁式挡土墙是钢筋混凝土结构,包括悬臂式和扶壁式两种主要型式。悬臂式挡土墙由立壁和底板组成,有三个悬臂,即立壁、趾板和踵板。当墙身较高时,可沿墙长一定距离立肋板(即扶壁)联结立壁板与踵板,从而形成扶壁式挡墙;老路加固时,考虑扶壁难以在踵板侧做,也可考虑将其做在趾板侧,同样可以发挥作用,但须进行设计计算确定。
(四)加筋土挡土墙加筋土挡土墙是由填土、填土中的拉筋条以及墙面板等三部分组成,它是通过填土与拉筋间的摩擦作用把土的侧压力削减到土体中起到稳定土体作用的。加筋土挡土墙属于柔性结构,对地基变形适应性大,建筑高度也可很大,适用于填土路基;但须考虑其挡板后填土的渗水稳定及地基变形对其的影响,需要通过计算分析选用。
(五)其它挡土墙柱板式挡土墙(沿河路堤及基坑开挖中常用)桩板式挡土墙(基坑开挖及抗洪中使用)垛式挡土墙(又称为框架式挡土墙)。
指挡土墙的形状和高矮。据环境状况通常采用“五化”设计手法,即化高为低、化整为零、化大为小、化陡为缓、化直为曲。