WO2017020844A1 - 多曲拱井盖板 - Google Patents

多曲拱井盖板 Download PDF

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Publication number
WO2017020844A1
WO2017020844A1 PCT/CN2016/093178 CN2016093178W WO2017020844A1 WO 2017020844 A1 WO2017020844 A1 WO 2017020844A1 CN 2016093178 W CN2016093178 W CN 2016093178W WO 2017020844 A1 WO2017020844 A1 WO 2017020844A1
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Prior art keywords
arch
cover
shell
curved
concrete
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PCT/CN2016/093178
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English (en)
French (fr)
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卢国林
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卢国林
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Application filed by 卢国林 filed Critical 卢国林
Publication of WO2017020844A1 publication Critical patent/WO2017020844A1/zh

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
    • E02D29/14—Covers for manholes or the like; Frames for covers

Definitions

  • the invention relates to a well cover design technique, in particular to a multi-curved arch cover.
  • the well cover is widely used for the ground exit of various underground pipelines, which is convenient for personnel to carry in and out.
  • various specifications and categories have been derived. Due to different force requirements, the materials used are different. There are ductile iron, concrete, and polymer chemicals.
  • the ribbed structure is generally used in the shape, and the rib is the main bent part, which is subjected to a large pulling force, and is a key part of the force of the entire well cover.
  • the concrete material only has high compressive strength and low tensile strength.
  • Steel bars must be placed for bending, so the thickness of the concrete well cover is relatively large, and the mechanical properties of the concrete can not be fully exerted.
  • the cost of the nodular cast iron well cover is relatively high, and the mechanical properties of the polymer cover of the polymer chemical material are poor, and it is not suitable for use in places with large load bearing requirements.
  • the multi-curved arch cover comprises a manhole cover body, wherein the structure body is a space reverse catenary or a parabolic arch-like force structure, and the main body is composed of an upper top plate, a lower outer ring and an inner layer arch shell In the composition, the arch shell is composed of a reverse pot-shaped shell or a radially distributed arch rib structure.
  • the arched shell includes a plurality of sets of annular radial holes.
  • the plurality of sets of arch rib structures form an annular arch structure.
  • the structural body consists of concrete and/or polymeric chemicals.
  • the outer ring is a concrete and/or polymeric chemical material with built-in annular steel bars or steel plates.
  • the invention has the beneficial effects that the multi-curved arch cover provided by the invention refers to the mechanical concept of the double arch, and the inner arch shell or the arch rib is subjected to pressure, and the arch shell or the arch rib is a space reverse catenary or parabola. Structure, under vertical load, the arch shell or arch rib only has compressive stress, no tensile stress, no need to arrange steel bars; the top part of the arch shell or arch rib is hollowed out as much as possible, and also forms a plurality of arch structures to reduce concrete The amount of material used, while reducing the structural weight.
  • FIG. 1 is a schematic structural view of a multi-curved arch cover of the present invention
  • FIG. 2 is a schematic view showing the space structure of the multi-curved arch cover of the present invention.
  • FIG. 3 is a schematic cross-sectional view showing the structure of the multi-curved arch cover of the present invention.
  • the multi-curved arch cover disclosed in this embodiment includes a manhole cover structure body, and the structure body is a space reverse catenary or a parabolically distributed arch-shaped force structure, and the The main body is composed of an upper top plate 111, a lower outer ring 112 and an inner layer arch 113, which is composed of a reverse pot-shaped casing or a radially distributed arch rib structure 114.
  • the arched shell 113 includes a plurality of sets of annular radial holes 115.
  • the plurality of sets of arch rib structures 114 form an annular arch structure.
  • the structural body is composed of concrete and/or polymeric chemical materials.
  • the outer ring 112 is a concrete and/or polymeric chemical material with built-in annular steel bars or steel plates.
  • the key technology lies in the arched force structure of the space reverse catenary or parabola.
  • the arch shell is hollowed out into an arch rib structure, and the holes are selectively arranged.
  • the arch shell (or arch rib) Under the vertical load, the arch shell (or arch rib) There is only compressive stress, no tensile stress, no need to arrange steel bars for the multi-curved arch cover, and the outer ring of the arch is made of annular steel or annular steel plate to withstand the pressure from the arch shell (or arch rib).
  • the upper part of the arch shell (or arch rib) is hollowed out as much as possible to form a plurality of annular arch structures, which can reduce the amount of concrete material and reduce the weight of the structure.
  • Multi-curved arch cover can be made of concrete or polymer chemical Work. It is also possible to use a combined structure to make a multi-curved arch cover, such as a concrete arch (or arch rib), an arch shell (or arch rib) made of a polymer chemical material; or an ordinary cast iron arch shell (or arch) Ribs, arches (or arch ribs) are made of concrete or polymer chemicals.
  • the mechanical concept of the double arch is cited.
  • the inner arch shell or the arch rib is subjected to pressure, and the arch shell or arch rib is a spatial reverse catenary structure.
  • the arch shell or the arch rib only has compressive stress. There is no tensile stress, no need to configure the steel bar; the top part of the arch shell or the arch rib is hollowed out as much as possible, and a plurality of arch structures are also formed, which reduces the amount of concrete material and reduces the structural weight.
  • the present invention is not limited to the above embodiments, and all embodiments that adopt the similar structures and methods of the present invention to achieve the object of the present invention are within the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Sewage (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Abstract

一种多曲拱井盖板，包括一井盖结构主体，结构主体为空间反向悬链线或抛物线状的拱状受力结构，结构主体由上部顶板（111）、下部外圈（112）及内层的拱壳（113）组成，拱壳（113）由反向锅状壳体或呈辐射状分布的拱肋结构（114）组成。

Description

多曲拱井盖板 技术领域
本发明涉及井盖板设计技术，尤其涉及一种多曲拱井盖板。
背景技术
井盖板广泛用于各种地下管道的地面出口，方便人员维修进出，为适应各种需要，衍生出了各种各样的规格和类别，由于受力要求的不同，所使用的材料也不同，有球墨铸铁的，有混凝土的，还有高分子化学材料的。形状上普遍采用板肋式结构，其中的肋是主要受弯件，承受较大的拉力，是整个井盖板的受力关键部位。肋条的刚度(抗弯能力)与肋条的宽度b和高度h的关系为：w＝kbh2，其中，k为系数，长方体k＝1/6，增大h，抗弯能力显著提高。
综上，混凝土材料只是抗压强度高，抗拉强度很低，必须配置钢筋才能用于受弯，因此混凝土井盖板厚度相对较大，不能充分发挥混凝土抗压的力学性能。球墨铸铁井盖板的成本较高，高分子化学材料的井盖板的力学性能较差，不适合有较大承重要求的地方使用。
发明内容
本发明的目的在于提供一种多曲拱井盖板，有效解决上述问题。
为有效解决上述技术问题，本发明采取的技术方案如下：
多曲拱井盖板，包括一井盖结构主体，所述结构主体为空间反向悬链线或抛物线状的拱状受力结构，且所述主体由上部顶板、下部外圈及内层的拱壳组成，所述拱壳由反向锅状壳体或呈辐射状分布的拱肋结构组成。
特别的，所述拱壳上包括多组环形辐射状孔洞。
特别的，多组拱肋结构组成环状的拱形结构。
特别的，所述结构主体由混凝土和/或高分子化学材料组成。
特别的，所述外圈为内置环形钢筋或钢板的混凝土和/或高分子化学材料。
本发明的有益效果为：本发明提供的多曲拱井盖板，引用双曲拱的力学概念，由内层拱壳或者拱肋承受压力，拱壳或者拱肋为空间反向悬链线或抛物线结构，在竖向荷载作用下，拱壳或者拱肋只出现压应力，没有拉应力，无需配置钢筋；拱壳或者拱肋以上顶盖部分尽量挖空，也形成多个拱状结构，减少混凝土材料的用量，同时减轻结构自重。
下面结合附图对本发明进行详细说明。
附图说明
图1是本发明所述多曲拱井盖板组成结构示意图；
图2是本发明所述多曲拱井盖板结构空间示意图；
图3是本发明所述多曲拱井盖板中结构截面示意图。
其中：
111顶板，112外圈，113拱壳，114拱肋结构，115孔洞。
具体实施方式
实施例1：
在本实施例中，所述传统公知结构的组成原件在图中不做文字说明及显示。
如图1-3所示，本实施例公开的多曲拱井盖板，包括一井盖结构主体，所述结构主体为空间反向悬链线或抛物线状分布的拱状受力结构，且所述主体由上部顶板111、下部外圈112及内层的拱壳113组成，所述拱壳113由反向锅状壳体或呈辐射状分布的拱肋结构114组成。
所述拱壳113包括多组环形辐射状孔洞115。多组拱肋结构114组成环状的拱形结构。所述结构主体由混凝土和/或高分子化学材料组成。所述外圈112为内置环形钢筋或钢板的混凝土和/或高分子化学材料。
申请人声明，所属技术领域的技术人员在上述实施例的基础上，将上述实施例某步骤，与发明内容部分的技术方案相组合，从而产生的新的方法，也是本发明的记载范围之一，本申请为使说明书简明，不再罗列这些步骤的其它实施方式。
下面具体说明本实施例的技术原理如下：
关键技术在于空间反向悬链线或抛物线的拱状受力结构，为减轻重量，拱壳挖空成拱肋结构，选择性设置孔洞，在竖向荷载作用下，拱壳(或者拱肋)只出现压应力，没有拉应力，实现多曲拱井盖板无需配置钢筋，拱底外圈采用环形钢筋或环形钢板，用来承受拱壳(或者拱肋)传来的压力。拱壳(或者拱肋)以上顶盖部分尽量挖空，形成多个环状拱状结构，就可以减少混凝土材料的用量，同时减轻结构自重。
多曲拱井盖板既可以用混凝土制作，也可以用高分子化学材料制 作。也可以采用组合结构制作多曲拱井盖板，如用混凝土做拱壳(或者拱肋)，拱壳(或者拱肋)以上用高分子化学材料制作；还可以用普通铸铁制作拱壳(或者拱肋)，拱壳(或者拱肋)以上用混凝土或者高分子化学材料制作。
本实施例中区别于现有技术的技术路线为：
引用双曲拱的力学概念，由内层拱壳或者拱肋承受压力，拱壳或者拱肋为空间反向悬链线结构，在竖向荷载作用下，拱壳或者拱肋只出现压应力，没有拉应力，无需配置钢筋；拱壳或者拱肋以上顶盖部分尽量挖空，也形成多个拱状结构，减少混凝土材料的用量，同时减轻结构自重。
申请人又一声明，本发明通过上述实施例来说明本发明的实现方法及装置结构，但本发明并不局限于上述实施方式，即不意味着本发明必须依赖上述方法及结构才能实施。所属技术领域的技术人员应该明了，对本发明的任何改进，对本发明所选用实现方法等效替换及步骤的添加、具体方式的选择等，均落在本发明的保护范围和公开范围之内。
本发明并不限于上述实施方式，凡采用与本发明相似结构及其方法来实现本发明目的的所有实施方式均在本发明保护范围之内。

Claims (5)

  1. 多曲拱井盖板，其特征在于，包括一井盖结构主体，所述结构主体为空间反向悬链线或抛物线状的拱状受力结构，且所述主体由上部顶板、下部外圈及内层的拱壳组成，所述拱壳由反向锅状壳体或呈辐射状分布的拱肋结构组成。
  2. 根据权利要求1所述的多曲拱井盖板，其特征在于，所述拱壳上包括多组环形辐射状孔洞。
  3. 根据权利要求1所述的多曲拱井盖板，其特征在于，多组拱肋结构组成环状的拱形结构。
  4. 根据权利要求1所述的多曲拱井盖板，其特征在于，所述结构主体由混凝土和/或高分子化学材料组成。
  5. 根据权利要求1所述的多曲拱井盖板，其特征在于，所述外圈为内置环形钢筋或钢板的混凝土和/或高分子化学材料。
PCT/CN2016/093178 2015-08-06 2016-08-04 多曲拱井盖板 WO2017020844A1 (zh)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105089075A (zh) * 2015-08-06 2015-11-25 卢国林 多曲拱井盖板
GB2545029B (en) * 2015-12-04 2022-01-12 Mark Seddon Alan Manhole lid support

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070000184A1 (en) * 2003-06-26 2007-01-04 Sim-Tech Filters, Inc. Molded sectioned riser and locking cover
CN103452136A (zh) * 2013-01-09 2013-12-18 丁永杰 检查井盖碟形承重骨架及由其制作的检查井盖
CN103469824A (zh) * 2013-09-27 2013-12-25 何春源 阶梯式防沉降井盖
CN103510543A (zh) * 2012-06-25 2014-01-15 湖北宜昌红业五龙水泥制品有限公司 混凝土井盖框架
CN105089075A (zh) * 2015-08-06 2015-11-25 卢国林 多曲拱井盖板
CN204898732U (zh) * 2015-08-06 2015-12-23 卢国林 多曲拱井盖板

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070000184A1 (en) * 2003-06-26 2007-01-04 Sim-Tech Filters, Inc. Molded sectioned riser and locking cover
CN103510543A (zh) * 2012-06-25 2014-01-15 湖北宜昌红业五龙水泥制品有限公司 混凝土井盖框架
CN103452136A (zh) * 2013-01-09 2013-12-18 丁永杰 检查井盖碟形承重骨架及由其制作的检查井盖
CN103469824A (zh) * 2013-09-27 2013-12-25 何春源 阶梯式防沉降井盖
CN105089075A (zh) * 2015-08-06 2015-11-25 卢国林 多曲拱井盖板
CN204898732U (zh) * 2015-08-06 2015-12-23 卢国林 多曲拱井盖板

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