New method of changing arch bridge into beam-arch bridge
An abdominal arch and vault technology is applied in the new field of building bridges on beam arches, which can solve problems such as difficult to achieve satisfactory results, difficult construction, and increased self-weight.
Inactive Publication Date: 2003-09-03
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology
[0007] These methods are all reinforcement methods, and their disadvantages are that the construction is difficult, and the self-weight is increased while the old bridge is reinforced, and it is difficult to achieve satisfactory results at a high cost.
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[0013] The implementation method of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0014] See Figure 1, figure 2 , first uncover the bridge deck, remove the guard arch and filler 4 above the arch back of the main arch 1 and the belly arch 2, keep the belly arch pier 3, and the belly arch 2 can be retained under normal circumstances, and can also be removed if necessary; then Pour columns 7 on the belly arch piers 3; finally cover the deck beams 6 on each column 7 and vault 8 to form a beam-arch bridge. The vault 8 can form a solid section 5 with the deck beam 6 , so that the effective section of the vault 8 is obviously increased. The solid segment 5 can be regarded as a composite of the column 7 and the beam slab 6 .
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The present invention includes the following steps: removing protective arch of arcuated on-arch construction and filling, then changing arched bridge into beam-arched on-arch construction bridge. The old bridge has no need of reinforcement, only has need of reducing self-weight, and its load-bearing capacity also can be raised naturally.
Description
Technical field: [0001] The invention relates to a method for changing an arch-type overarch construction bridge in an arch bridge into a beam-arch over-arch construction bridge. Background technique: [0002] The arch bridge is the most common type of arch bridge (as shown in Figure 1), and there are tens of thousands of such arch bridges in my country. The protective arches and fillers on the arch upper part of most arch bridges are very heavy, which increases the dead weight of the whole bridge. With the increase of the load capacity of vehicles in traffic movement, some arch bridges that have been built cannot meet the demand for increased load load and need to be reinforced and reconstructed. [0003] The following methods are usually used to strengthen old arch bridges: [0004] 1. Thicken the main arch from the bottom of the main arch to increase the section of the arch ring; [0005] 2. Use the jacking method to eliminate the displacement of the abutment; [0006...
Claims
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IPC IPC(8): E01D4/00E01D22/00
Inventor 王国鼎
Owner HUAZHONG UNIV OF SCI & TECH