CN112049078A - Truss-like steel aqueduct of wave web - Google Patents
Truss-like steel aqueduct of wave web Download PDFInfo
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- CN112049078A CN112049078A CN202010711439.0A CN202010711439A CN112049078A CN 112049078 A CN112049078 A CN 112049078A CN 202010711439 A CN202010711439 A CN 202010711439A CN 112049078 A CN112049078 A CN 112049078A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D18/00—Bridges specially adapted for particular applications or functions not provided for elsewhere, e.g. aqueducts, bridges for supporting pipe-lines
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
- E02B5/02—Making or lining canals
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Abstract
本发明公开了一种波形腹板的桁架式钢渡槽,包括采用波形腹板的钢箱梁体和桁架支撑结构,所述钢箱梁体沿中心轴对称布置,采用槽形或U形断面,由波形腹板和底板组成;所述桁架支撑结构至少为两片且沿中心轴对称布置,由弦杆、两片桁架下弦杆之间的平联、腹杆以及两片桁架腹杆之间的横联组成;所述波形腹板位于桁架支撑结构的平联之间,底板支撑在横联上;平联内侧设有隔板为波形腹板提供侧向支撑。采用全钢结构,水密性能好,且结构可在工厂内分节段预制后进行现场拼装施工,施工速度快且施工质量容易得到保证。钢结构相比混凝土结构自重较小,跨越能力更强,因此更加适合于大过水断面以及大跨度渡槽的建设。
The invention discloses a truss-type steel aqueduct with a corrugated web, comprising a steel box girder body with a corrugated web and a truss support structure. It consists of a web and a bottom plate; the truss support structure is at least two pieces and arranged symmetrically along the central axis, consisting of a chord, a flat connection between the lower chords of the two trusses, a web and a transverse connection between the two truss webs The corrugated web is located between the parallel links of the truss support structure, and the bottom plate is supported on the horizontal link; the inner side of the parallel link is provided with a partition plate to provide lateral support for the corrugated web. It adopts all-steel structure, with good watertight performance, and the structure can be assembled and constructed on site after being prefabricated in sections in the factory. The construction speed is fast and the construction quality can be easily guaranteed. Compared with concrete structures, steel structures have less dead weight and stronger spanning capacity, so they are more suitable for the construction of large water-passing sections and large-span aqueducts.
Description
技术领域technical field
本发明属于桥梁工程和建筑结构技术领域,涉及一种波形腹板的桁架式通航钢渡槽。The invention belongs to the technical field of bridge engineering and building structures, and relates to a truss-type navigable steel aqueduct with corrugated webs.
背景技术Background technique
渡槽是由桥梁、隧道或沟渠构成的输水系统,用于通水、通行和通航。渡槽通常架设于河流或者山谷之上,在水利工程及饮水工程中被广泛使用,为保证输水过程的安全性,渡槽需要满足承载力以及水密性的需求。传统渡槽通常采用预应力钢筋混凝土结构,通过在底板和侧墙施加预应力来避免混凝土结构受拉开裂,预应力筋数量繁多且布置复杂,现场施工工作十分繁琐困难且工程质量难以保证。由于传统底板横向预应力损失大,且随着时间的推移会出现预应力松弛的问题,这会导致混凝土槽身开裂风险增大,并且开裂后修复困难。An aqueduct is a water delivery system consisting of bridges, tunnels or ditches for water, passage and navigation. Aqueducts are usually erected on rivers or valleys and are widely used in water conservancy projects and drinking water projects. In order to ensure the safety of the water delivery process, aqueducts need to meet the requirements of bearing capacity and water tightness. Traditional aqueducts usually use prestressed reinforced concrete structures. The concrete structure is prevented from cracking under tension by applying prestressing force to the bottom plate and side walls. The number of prestressed tendons is large and the arrangement is complicated. The on-site construction work is very tedious and difficult, and the quality of the project is difficult to guarantee. Due to the large lateral prestress loss of the traditional floor and the problem of prestress relaxation over time, this will lead to an increased risk of cracking in the concrete tank body, and it is difficult to repair after cracking.
发明内容SUMMARY OF THE INVENTION
本发明提出了一种波形腹板的桁架式通航钢渡槽,全钢结构具有水密性好的优点,借助良好的结构设计可以从根本上杜绝混凝土材料可能出现的开裂问题,且与混凝土结构相比跨越能力更强,因此更适合大过水断面以及大跨度渡槽的建设。同时借助于波形腹板纵向刚度较小的特点,槽身可以很好地适应槽内水体和槽外桁架的不均匀温差和变形,结构受力性能大大改善。The invention proposes a truss-type navigable steel aqueduct with corrugated webs. The all-steel structure has the advantages of good water tightness. With the help of good structural design, the possible cracking problem of the concrete material can be fundamentally eliminated, and compared with the concrete structure The ability to span is stronger, so it is more suitable for the construction of large overwater sections and large-span aqueducts. At the same time, by virtue of the small longitudinal stiffness of the corrugated web, the tank body can well adapt to the uneven temperature difference and deformation of the water body in the tank and the truss outside the tank, and the mechanical performance of the structure is greatly improved.
本发明的技术方案如下:The technical scheme of the present invention is as follows:
一种波形腹板的桁架式通航钢渡槽的构造,包括采用波形腹板的钢箱梁体和桁架支撑结构,所述桁架支撑结构为钢箱梁体提供支撑;A structure of a truss-type navigable steel aqueduct with a corrugated web, comprising a steel box girder body with a corrugated web and a truss support structure, the truss support structure provides support for the steel box girder;
所述钢箱梁体沿中心轴对称布置,采用槽形或U形断面,由波形腹板和底板组成;The steel box girder body is symmetrically arranged along the central axis, adopts a trough or U-shaped section, and is composed of a corrugated web and a bottom plate;
所述波形腹板位于桁架支撑结构之间,桁架支撑结构内侧设有隔板为波形腹板提供侧向支撑。The corrugated web is located between the truss support structures, and the inner side of the truss support structure is provided with a partition plate to provide lateral support for the corrugated web.
本发明的进一步技术:Further technology of the present invention:
优选的,所述桁架支撑结构由两侧的弦杆、两侧弦杆之间的平联、同侧弦杆之间的腹杆以及腹杆之间的横联组成,所述波形腹板位于桁架支撑结构的平联之间,底板支撑在横联上。Preferably, the truss support structure is composed of chords on both sides, a flat connection between the chords on both sides, a web between the chords on the same side, and a transverse connection between the webs, and the corrugated web is located at the Between the parallel links of the truss support structure, the bottom plate is supported on the horizontal links.
优选的,所述的钢箱梁体的底板由横梁与纵向加劲肋组成支撑体系,横梁与纵向加劲肋一体结构,桁架支撑结构的横联支撑横梁。Preferably, the bottom plate of the steel box girder body is composed of a cross beam and a longitudinal stiffener to form a support system, the cross beam and the longitudinal stiffener are integrated, and the cross-connection of the truss support structure supports the beam.
优选的,所述桁架支撑结构由两侧的弦杆、同侧弦杆之间的腹杆组成。Preferably, the truss support structure consists of chords on both sides and webs between chords on the same side.
本发明相对于现有技术具有以下显著效果:The present invention has the following remarkable effects with respect to the prior art:
(1)承载能力高,跨越能力大。采用全钢结构,与混凝土结构相比,自重较小,跨越能力更强,因此更加适合于大过水断面以及大跨度渡槽的建设。(1) High carrying capacity and large spanning capacity. Compared with the concrete structure, it adopts an all-steel structure, which has a smaller self-weight and stronger spanning ability, so it is more suitable for the construction of large water-passing sections and large-span aqueducts.
(2)施工便捷,结构可在工厂内分节段预制后进行现场拼装施工,工业化程度高,施工速度快且施工质量容易得到保证。(2) The construction is convenient. The structure can be prefabricated in sections in the factory for on-site assembly construction. The degree of industrialization is high, the construction speed is fast, and the construction quality can be easily guaranteed.
(3)水密性能好,本发明采用全钢结构,从根本上杜绝混凝土材料可能出现的开裂问题。(3) The water tightness performance is good, and the present invention adopts an all-steel structure to fundamentally eliminate the cracking problem that may occur in the concrete material.
(4)抗不均匀温差和变形能力强,输水槽侧壁采用纵向刚度较小的波形腹板,使得渡槽能够很好地适应槽内水体和槽外桁架间的不均匀温差和变形,在结构受力模式上达到了槽桥分离的目的。(4) The ability to resist uneven temperature difference and deformation is strong. The side wall of the water conveying tank adopts a corrugated web with small longitudinal stiffness, so that the aqueduct can well adapt to the uneven temperature difference and deformation between the water body in the tank and the truss outside the tank. In the force mode, the purpose of separating the slot and bridge is achieved.
(5)该渡槽可用于通航,同时,可跨河面,上下通航互不影响,渡槽采用波折板可以提高船舶撞击能力。(5) The aqueduct can be used for navigation, and at the same time, it can cross the river surface, and the upper and lower navigation does not affect each other. The use of corrugated plates in the aqueduct can improve the collision ability of ships.
附图说明Description of drawings
图1为波形腹板的桁架式钢渡槽的桁架式支撑结构高于钢箱梁体时的横断面图;Figure 1 is a cross-sectional view of the truss-type steel aqueduct with corrugated webs when the truss-type support structure is higher than the steel box girder body;
图2为波形腹板的桁架式钢渡槽为桁架式梁拱组合结构体系时的纵断面图。;Figure 2 is a longitudinal cross-sectional view of a truss-type steel aqueduct with corrugated webs when it is a truss-type beam-arch composite structural system. ;
图3为波形腹板的桁架式钢渡槽的平面图;Figure 3 is a plan view of a truss-type steel aqueduct with corrugated webs;
图4为波形腹板的桁架式钢渡槽的桁架式支撑结构与钢箱梁体等高时的横断面图;Figure 4 is a cross-sectional view of the truss-type support structure of the truss-type steel aqueduct with corrugated webs and the steel box girder body at the same height;
图5为波形腹板的桁架式钢渡槽为桁架梁式结构体系时的纵断面图。Figure 5 is a longitudinal sectional view of a truss-type steel aqueduct with corrugated webs when it is a truss-girder structure system.
具体实施方式Detailed ways
以下结合附图所示,对本发明的构造做进一步说明如下:Below in conjunction with the accompanying drawings, the structure of the present invention is further described as follows:
如图1至图3所示,本发明提出了一种波形腹板的桁架式通航钢渡槽。As shown in Figures 1 to 3, the present invention proposes a truss-type navigable steel aqueduct with corrugated webs.
包括采用波形腹板的钢箱梁体和桁架支撑结构;所述钢箱梁体沿中心轴对称布置,采用槽形或U形断面,由波形腹板10和底板20组成;It includes a steel box girder body and a truss support structure with corrugated webs; the steel box girder body is symmetrically arranged along the central axis, adopts a trough or U-shaped section, and is composed of a
桁架支撑结构高于钢箱梁体,所述桁架支撑结构至少为两片且沿中心轴对称布置,由弦杆30、两片桁架下弦杆之间的平联40、腹杆 50以及两片桁架腹杆之间的横联60组成,各杆件可采用工字型或箱形等各种截面形式。The truss support structure is higher than the steel box girder body. The truss support structure is at least two pieces and arranged symmetrically along the central axis. The transverse links between the web rods are composed of 60, and each rod can adopt various cross-sectional forms such as I-shaped or box-shaped.
钢箱梁底板由横梁21与纵向加劲肋22组成支撑体系,桁架支撑结构通过横隔板11为波形腹板10提供侧向支撑。The bottom plate of the steel box girder consists of a
如图3-4所示,本发明提出了另一种波形腹板的桁架式通航钢渡槽。As shown in Figures 3-4, the present invention proposes another truss-type navigable steel aqueduct with corrugated webs.
包括采用波形腹板的钢箱梁体和桁架支撑结构;所述钢箱梁体沿中心轴对称布置,采用槽形或U形断面,由波形腹板10和底板20组成;It includes a steel box girder body and a truss support structure with corrugated webs; the steel box girder body is symmetrically arranged along the central axis, adopts a trough or U-shaped section, and is composed of a
桁架支撑结构与钢箱梁体等高,由弦杆30和腹杆50组成。各杆件可采用工字型或箱形等各种截面形式。The truss support structure has the same height as the steel box girder and is composed of
钢箱梁底板由横梁21与纵向加劲肋22组成支撑体系,桁架支撑结构通过横隔板11为波形腹板10提供侧向支撑。The bottom plate of the steel box girder consists of a
本发明提出的波形腹板的桁架式钢渡槽,可以根据设计需要选择桁架梁式结构体系,如图5所示。也可以选择桁架式拱梁组合结构体系,如图2所示。For the truss-type steel aqueduct with corrugated webs proposed by the present invention, a truss-girder structure system can be selected according to design requirements, as shown in FIG. 5 . A truss-type arch-beam composite structural system can also be selected, as shown in Figure 2.
本发明提出的一种波形腹板的桁架式通航钢渡槽,采用全钢结构借助良好的结构设计可以从根本上杜绝混凝土材料可能出现的开裂问题,且与混凝土结构相比跨越能力更强,因此更适合大过水断面以及大跨度渡槽的建设。此外,借助于波形腹板纵向刚度较小的特点,槽身可以很好地适应槽内水体和槽外桁架的不均匀温差,结构受力性能大大改善。结构可在工厂内分节段预制后进行现场拼装施工,具有工业化程度高,施工速度快且施工质量容易得到保证的特点。The truss-type navigable steel aqueduct with corrugated webs proposed by the present invention adopts an all-steel structure and can fundamentally eliminate the possible cracking problem of concrete materials by virtue of good structural design, and has stronger spanning ability compared with concrete structures. It is more suitable for the construction of large overwater sections and large-span aqueducts. In addition, by virtue of the small longitudinal stiffness of the corrugated web, the tank body can well adapt to the uneven temperature difference between the water body in the tank and the truss outside the tank, and the mechanical performance of the structure is greatly improved. The structure can be prefabricated in sections in the factory for on-site assembly and construction. It has the characteristics of high industrialization, fast construction speed and easy to guarantee construction quality.
上述的描述是为便于该技术领域的普通技术人员能理解和应用本发明。熟悉本领域技术的人员显然可以容易地对这些描述做出各种修改,并把在此说明的一般原理应用到其他实施例中而不必经过创造性的劳动。因此,本发明不限于这里的描述,本领域技术人员根据本发明的揭示,不脱离本发明范畴所做出的改进和修改都应该在本发明的保护范围之内。The above description is for the convenience of those of ordinary skill in the art to understand and apply the present invention. It will be apparent to those skilled in the art that various modifications to these descriptions can be readily made, and the general principles described herein can be applied to other embodiments without inventive step. Therefore, the present invention is not limited to the description herein, and improvements and modifications made by those skilled in the art according to the disclosure of the present invention without departing from the scope of the present invention should all fall within the protection scope of the present invention.
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CN112726513A (en) * | 2020-12-18 | 2021-04-30 | 青海省引大济湟工程建设运行局 | Prestressed hollow truss arch design and construction method |
CN112726513B (en) * | 2020-12-18 | 2022-04-22 | 青海省引大济湟工程建设运行局 | A design and construction method of prestressed hollow truss arch |
CN113047153A (en) * | 2021-02-07 | 2021-06-29 | 中铁四局集团有限公司 | Method for manufacturing all-welded U-shaped steel structure aqueduct |
GB2604016A (en) * | 2021-02-07 | 2022-08-24 | China Tiesiju Civil Eng Group | Manufacture method of all-welded U-shaped steel structure aqueduct |
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