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An assembled longitudinal beam, an assembled support without buttresses, a system and a design method thereof

A prefabricated, pier-free technology, applied in bridge erection/assembly, bridge construction, design optimization/simulation, etc., can solve the problems of material waste, applicability, cumbersome design, and poor versatility of pier-free supports

Active Publication Date: 2022-07-08
GUANGXI ROAD & BRIDGE ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an assembled longitudinal beam, assembled unsupported pier support, assembled unsupported pier support, etc. The pier support system and design method, realize the assembly, modularization and standardized design, production and use of pier support without support within a certain span range

Method used

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  • An assembled longitudinal beam, an assembled support without buttresses, a system and a design method thereof
  • An assembled longitudinal beam, an assembled support without buttresses, a system and a design method thereof
  • An assembled longitudinal beam, an assembled support without buttresses, a system and a design method thereof

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Experimental program
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Effect test

Embodiment 1

[0129] like Figure 1-10As shown, a prefabricated longitudinal beam described in this embodiment includes a standard truss section 1, two ends of the standard truss section 1 are detachably connected with an adjustable section 2, and the length of the adjustable section 2 can be adjusted , the total longitudinal length range after the standard truss segment 1 and the adjustable segments 2 at both ends are matched can satisfy at least two span lengths between the first threshold value and the second threshold value.

[0130] In the test, it was found that the stability of the truss itself cannot be guaranteed if the span exceeds 30m, and the span is less than 20m, and the advantages of the present application over the Bailey beam are not obvious.

[0131] It needs to be explained here: the longitudinal direction in the total longitudinal length after the standard truss section 1 and the adjustable sections 2 at both ends are matched are as follows: Figure 24 The length direct...

Embodiment 2

[0156] like Figure 10 As shown, the prefabricated longitudinal beam described in this embodiment is different from Embodiment 1 in that it is easy to distinguish between different types of standard truss segment units based on blanking, transportation, manufacturing, and at the same time, it is convenient for combination considerations. The total longitudinal length range after one or more of the standard truss segment units and the two adjustable segments 2 are matched can satisfy all integer meters between the first threshold value and the second threshold value.

[0157] Specifically, the length of the third standard truss segment unit (3), the length of the second standard truss segment unit (4) and the first standard truss segment unit (5) are arranged in an arithmetic progression.

[0158] More specifically, the longitudinal length of the first standard truss segment unit 5 is 9m; the longitudinal length of the second standard truss segment unit 4 is 7m; the longitudina...

Embodiment 3

[0166] like Figure 10 As shown, a prefabricated longitudinal beam described in this embodiment is different from Embodiment 1 or 2 in that the connecting truss 6 includes side pieces 12 that are vertically spaced apart and connected to each other. 12 includes two straight web rods 18 arranged at intervals, and an X-shaped oblique web rod 19 is provided between the two straight web rods 18, wherein,

[0167] One end of the straight web rod 18 is connected with the upper chord rod 14, and the other end of the straight web rod 18 is connected with the lower chord rod 15;

[0168] One end of the X-shaped oblique web bar 19 is connected to the upper chord 14 , and the other end of the X-shaped oblique web bar 19 is connected to the lower chord 15 .

[0169] like Figure 8 and 32 , 33, in the test, when the boundary conditions of the model and the load conditions are consistent, only the form of the adjustable section 2 web rod is changed. The adjustable section 2 web rod of thi...

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Abstract

The invention relates to the technical field of cast-in-place bridge construction, in particular to a prefabricated longitudinal beam, a prefabricated pier-free support, a system and a design method, wherein the prefabricated longitudinal beam comprises a standard truss section, and both ends of the standard truss section can be An adjustable section is detached and connected, the length of the adjustable section can be adjusted, and the total longitudinal length range after the standard truss section and the adjustable sections at both ends are matched can meet at least a range between the first threshold and the second threshold. Two span lengths. A prefabricated longitudinal beam described in the present application is matched by a standard truss section with a fixed length and an adjustable section whose length can be adjusted, and the total longitudinal length range after the standard truss section and the adjustable sections at both ends are matched At least two span lengths between the first threshold and the second threshold can be satisfied, so as to realize the assembly, modularization and standardized design and production of the fabricated stringer within the range between the first threshold and the second threshold. and use.

Description

technical field [0001] The invention relates to the technical field of cast-in-place bridge construction, in particular to an assembled longitudinal beam, an assembled support system without buttresses and a design method thereof. Background technique [0002] High piers, curves, and complex geology are common problems encountered in the construction of cast-in-place bridges. At this time, the form of floor-standing supports is adopted, whether it is a traditional bowl-shaped bracket, a plate-shaped bracket, or a steel pipe column + Bailey beam + bracket, etc. The erection form of the support ultimately needs to transfer the load to the foundation, which has poor adaptability to the terrain, high requirements on the bearing capacity of the foundation, complicated construction and high risk. [0003] In order to solve the above problems, there is a support scheme without piers in the art, and the two ends of the support without piers are supported on the piers of the bridge, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00G06F30/13G06F30/23G06F119/14
CPCE01D21/00G06F30/13G06F30/23G06F2119/14Y02E10/50
Inventor 魏华韩玉叶志权梁厚燃解威威董宏源梁铭王振琦
Owner GUANGXI ROAD & BRIDGE ENG GRP CO LTD
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