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Construction method of aqueducts above bridge

A construction method and aqueduct technology, which is applied in water conservancy projects, artificial waterways, buildings, etc., can solve problems such as unbearable and increased difficulty in the construction of aqueducts above bridges, and achieve the effects of short construction period, simple and efficient construction, and safe passage of vehicles

Pending Publication Date: 2021-04-30
YUNNAN CONSTR INVESTMENT FIRST SURVEY & DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The road below the aqueduct is usually the bridge deck, which cannot bear thousands of tons of pressure, which greatly increases the difficulty of the construction of the aqueduct above the bridge

Method used

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  • Construction method of aqueducts above bridge
  • Construction method of aqueducts above bridge
  • Construction method of aqueducts above bridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] On-site layout: adopt the principle of layout;

[0034] (1) The plane layout is scientific and reasonable, and the construction site occupies a small area;

[0035] (2) Reasonable organization of transportation to reduce secondary handling;

[0036] (3) The division of the construction area and the temporary occupation of the site shall meet the requirements of the overall construction deployment and construction process, and reduce mutual interference;

[0037] (4) Make full use of existing structures and existing facilities to provide project construction services to reduce the construction cost of temporary facilities;

[0038] (5) Meet the requirements of energy saving, environmental protection, safety and fire protection.

Embodiment 2

[0040]Technical parameters of oversized load formwork: maximum height of support: 12m; width of support: 16.5m; length of single span of support: 13.2m; pole: 3m / 2m; m; cross bar: set at a step distance of 1.5m; scissor brace: set at a step distance of 4; gravity abutment wall parts: set at a step of 3m; pillars: set at a step of 3m; vertically inclined Tie rods: The unit truss combination method of the truss-type support structure adopts matrix type; 100mm square wood) spacing 0.1m.

[0041] Support system design:

[0042] (1) Pole foundation: The left panel is the newly built asphalt pavement. Before the formwork support is erected, 300*300*6cm bluestone slabs are laid at the foot of the pole, and the paving is stable. The right panel is across the k5+601.3 bridge. Twenty spans, the wet joints of the bridge slabs are weak positions;

[0043] (2) Longitudinal and horizontal beam support frame pole: adopt the buckle-type full hall support frame, and the vehicle door opening...

Embodiment 3

[0049] The foundation treatment of the support system; after checking and calculating the foundation of the pole, the bearing capacity of the foundation of the vertical and horizontal beams should be greater than 101Kpa, the bearing capacity of the foundation of the vertical pole of the aqueduct body should be greater than 176Kpa, the bearing capacity of the foundation of the vertical pole of the door opening should be greater than 70Kpa, and the bedding at the foot of the pole should be 300 *300*6cm bluestone slab, after testing, the compressive strength of the bluestone slab reaches 60Mpa, and the bearing capacity meets the requirements.

[0050] The foundations of the vertical and horizontal beams and the uprights of the aqueduct body are built on the left asphalt road and the right bridge. + 16cm thick graded gravel + 45cm thick cement stabilization layer + 18cm thick asphalt layer, the bearing capacity of the foundation bearing capacity test under the road bed is above 200...

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Abstract

The invention discloses a construction method of aqueducts above a bridge. The construction method comprises the steps of support arrangement, technological process, construction method, support prepressing, aqueduct supporting frame dismantling, support construction safety protection, formwork engineering construction method, steel bar engineering, concrete construction, formwork dismantling and road and bridge support constructing. The road and bridge supports comprise two layers of H-shaped steel, chain blocks and a support body, wherein the H-shaped steel is arranged on the two sides of a stand column, the H-shaped steel on the lower layer is tensioned and fixed to the stand column through the chain blocks, the H-shaped steel on the upper layer is vertically installed on the H-shaped steel on the lower layer, and then the support body is erected on the H-shaped steel on the upper layer. The support arrangement is composed of two steps of super-large load formwork technical parameters design and supporting system design. According to the technological process, aqueduct columns, longitudinal and transverse beams and aqueduct bodies are constructed separately; the construction method comprises the steps of foundation treatment of the supporting system, support erection and support inspection and acceptance; the formwork construction method comprises the steps that longitudinal and transverse formworks are installed; and the reinforcing steel bar engineering comprises two steps of reinforcing steel bar storage and reinforcing steel bar installation.

Description

technical field [0001] The invention relates to the technical field of civil engineering construction, in particular to a construction method for an aqueduct above a bridge. Background technique [0002] The aqueduct is an overhead water conveyance structure that conveys the water flow across the canal, road, mountain rush, valley mouth, etc. It is one of the most widely used intersecting buildings in the canal system. performance, low cost, has been widely used. With the needs of the society, the current arch aqueduct is developing in the direction of large-span arches. The aqueduct is built in a local debris flow and landslide area, which can prevent debris flow and landslides on the slope in the rainy season, affecting the normal traffic of the road and ensuring the safety of vehicles. Because the roads are usually steep and the roads are mostly bridges, the construction of aqueducts on the bridges greatly increases the difficulty of construction; hospitals, schools, tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B5/02
CPCE02B5/02
Inventor 贾荣谷赵国银刘克文孔庆迪吴波张剑波单光辉刘军庄坤陈鑫然王金福耿士坤罗予彤刘海芳
Owner YUNNAN CONSTR INVESTMENT FIRST SURVEY & DESIGN CO LTD
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