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Prestressed concrete three-web trough girder

A concrete and prestressed technology, applied in the direction of bridges, bridge materials, bridge construction, etc., can solve the problems of large lateral force of double-line trough beams, small bridge spans, and poor lateral stiffness, and achieve beautiful appearance and low building height. , The effect of comprehensive low cost

Active Publication Date: 2011-10-05
SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor lateral stiffness of the single-line grooved beams currently used in China, the applicable bridge spans are relatively small, mostly below 30m; while the double-line grooved beams are subjected to large lateral forces, thick bottom plates, and high material consumption

Method used

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  • Prestressed concrete three-web trough girder
  • Prestressed concrete three-web trough girder
  • Prestressed concrete three-web trough girder

Examples

Experimental program
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Embodiment Construction

[0019] Such as Figure 5 , 6 As shown, the prestressed concrete three-web channel beam of the present invention is mainly composed of a bottom plate 1, a side web 2 and a middle web 3.

[0020] Among them, the bottom plate 1 is also provided with an end beam 4 at the support at both ends of the beam, the side web 2 is provided with a side web upper flange 5 at the top, and the middle web 3 is provided with a middle web upper flange 6 at the top.

[0021] The bottom plate 1 is integrally cast with the side web 2 and the middle web 3 , the bottom plate 1 is arranged at the bottom of the side web 2 and the middle web 3 , and the end beams 4 at both ends of the beam are cast together with the bottom plate 1 .

[0022] In this embodiment, the included angle between the center line of the side web 2 and the normal direction of the bottom plate 1 is 18°, and the middle web 3 is perpendicular to the bottom plate 1 . The top surface of the side web 2 and the middle web 3 is 1.89m hig...

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Abstract

The invention discloses a prestressed concrete three-web trough girder. The trough girder at least comprises a base plate, two side webs and an intermediate web; the side webs are respectively arranged on both sides of the base plate, and the intermediate web is arranged between the side webs, the base plate is arranged at the bottom of the side webs and the intermediate web, and the side webs and the intermediate web are fixedly connected with the base plate respectively. The prestressed concrete three-web trough girder is characterized by low building height and good noise reduction effect;has the advantages of thin base plate of a single-line trough girder and big applicable span of double-line trough girders, high utilization rate of section space, lower total cost, wide serviceability and attractive appearance.

Description

technical field [0001] The invention relates to the technical field of road and bridge construction, in particular to a prestressed concrete three-web grooved girder. Background technique [0002] At present, the beam types used in domestic rail transit viaducts mainly include box girders, T-beams, single-track trough beams, and double-track trough beams. [0003] Such as figure 1 Shown is a conventional box girder type, box girder structures are noisy to operate. Such as figure 2 Shown is a T-beam beam type, and the integrity of the T-beam structure is poor, and the landscape effect is poor. [0004] Such as image 3 Shown is a single-line channel beam beam type, such as Figure 4 Shown is a double channel beam beam type. As a new type of elevated beam for rail transit, the channel beam, as a down-loaded structure, has the advantages of low building height, good noise reduction effect, and good landscape effect. However, due to the poor lateral stiffness of the sing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D2/00E01D101/28
Inventor 陆元春邓玮琳聂志宏朱敏何晓光
Owner SHANGHAI URBAN CONSTR DESIGN RES INST GRP CO LTD
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