CN206385527U - 一种真空预压排水组件 - Google Patents
一种真空预压排水组件 Download PDFInfo
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Abstract
本实用新型涉及一种真空预压排水组件,包括排水管3和三个以上的排水板4,其特征在于,各个排水板4辐射状排布,共用一个侧边,排水板4的上端通过蝴蝶结1与排水管3相连,在每个排水板4上开设有多个孔洞2。采用本实用新型的组件施工,具有排水量大,工期短的优点。
Description
一种真空预压排水组件
技术领域
[0001] 本实用新型涉及一种真空预压排水设施。
背景技术
[0002] 随着经济的发展,沿海地区城市基础设施建设用地紧张的矛盾日益突出,因此各 大城市掀起了一股填海造陆的热潮,航道疏浚形成的吹填土往往被用来作为填海造陆的地 基。但是疏浚淤泥形成的深厚吹填超软土,其颗粒粒径小于0.005mm的黏粒含量在30 %〜 50%之间,并且具有高含水率、大孔隙比、低强度、高压缩性、低渗透性和流变等不良的地质 工程地质特性。常规堆载预压法和强夯法等地基加固方法无法再疏梭淤泥形成的地基汇中 使用,故kjellman教授提出了真空预压法来解决吹填超软土地基的加固问题。
[0003] 之前的真空预压采用的竖向和横向排水通道利用的是砂井来进行竖向和横向排 水,目前常见的真空预压现场,大多采用的是塑料排水板作为竖向排水通道,横向排水通道 利用传统的砂垫层或者去掉砂垫层。
[0004] 工程实践中,真空预压的施工工艺流程主要分为9个施工步。其一,场地排水;如果 场地有积水,需要将场地的积水排出;其二,铺设编织布,主要是保证施工安全,进行隔泥; 其三,铺设无纺土工布,保证隔泥充分;其四,插入塑料排水板;其五,塑料排水板与支管相 连,支管与主管相连;其六,铺设2层聚氯乙烯或聚乙烯真空膜;其七,在区内均匀布置出膜 装置并与水汽分离罐相连。其八,加载,监测;其九,卸载,检测。
[0005] 插塑料排水在整个施工过程的关键一环,但目前塑料排水板存在以下几个方面的 问题:
[0006] 1、排水量小,工期较长。传统塑料排水板是单面排出,由于颗粒运移导致塑料排水 板发生淤堵,导致真空预压的周期长,工程经验表明增加排水板的间距,虽然在一定程度上 能够缩短固结的周期,但是排水板间距低于0.7m时,排水效果仍不明显。
[0007] 2、注气增压,导致塑料排水板在淤泥黏土不能保持垂直,容易产生弯折甚至断裂 现象,影响真空预压效果。 实用新型内容
[0008] 本实用新型的目的是克服现有技术的不足,结合现场施工具体要求,提供一种新 型真空预压排水组件,解决现场施工过程中施工周期长,排水量小,以及排水板弯折以及容 易断裂等问题。本实用新型的技术方案如下:
[0009] 一种真空预压排水组件,包括排水管3和三个以上的排水板4,其特征在于,各个排 水板4辐射状排布,共用一个侧边,排水板4的上端通过蝴蝶结1与排水管3相连,在每个排水 板4上开设有多个孔洞2。
[0010] 优选地,所述的排水管为钢丝软管3。在排水板4上每隔一段设置塑料插板支撑5。
[0011] 本实用新型存在以下几个方面的优点:
[0012] (1)排水量大,工期短。排水板是四面同时吸水,加快固结速度,缩短真空预压周 期,通过试验研宄发现,新型四面排水的塑料排水板的排水速率是传统排水板的3.6倍左 右。
[0013] ⑵整体性能好,新型塑料排水板式三维立体式结构,在插入淤泥中能够保持一定 垂直度,不容易发生弯折和断裂,真空预压效果明显。
附图说明
[0014]图1是本实用新型的真空预压排水板的整体结构图。
[0015]图中标号说明:1蝴蝶结;2塑料排水板孔洞;3钢丝软管;4塑料排水板;5塑料插板 支撑
具体实施方式
[0016]下面结合附图和实施例对本实用新型进行说明。
[0017]参见图1,本实用新型提供的新型真空预压排水组件,包括四个为一组的多组塑料 排水板。具体塑料排水板的连接为:塑料排水板4上开设有多个0 • 01mm左右大小的塑料排水 板孔洞2,并在塑料排水板4每隔lm处设置塑料插板支撑5;在施工过程中,塑料排水板4通过 蝴蝶结1连接到钢丝软管3各个钢丝软管3再通过三通和支管连接到主管。
Claims (3)
1. 一种真空预压排水组件,包括排水管⑶和三个以上的排水板(4),其特征在于,各个 排水板⑷辐射状排布,共用一个侧边,排水板⑷的上端通过蝴蝶结⑴与排水管⑶相连, 在每个排水板(4)上开设有多个孔洞(2)。
2. 根据权利要求1所述的排水组件,其特征在于,所述的排水管⑶为钢丝软管。
3. 根据权利要求1所述的排水组件,其特征在于,在排水板(4)上每隔一段设置塑料插 板支撑⑸。
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