KR20040026951A - Solid type Arch bridge using steel frame construction and this style of construction - Google Patents

Abstract

PURPOSE: A solid type arch bridge using a steel-framed structure is provided to heighten workability by manufacturing a steel-framed structure in a factory, working conditions, durability by unifying concrete and a steel skeleton, and the strength of a bridge. CONSTITUTION: The solid type arch bridge using a steel-framed structure comprises the steps of forming arched H-beams(2) along a bridge, arranging main compression bars(7) on the upper part of the arched H-beam(2) and arranging main tension bars(3) on the lower part of the arched H-beam(2), arranging two-way distribution bars(4) arranged to the same direction as the arched H-beam(2), arranging connection bars(6) to connect the main tension bar(3) and the main compression bar(7) mutually, and placing concrete(12) on the inner and outer sides of the arch rib to be safe structurally.

Description

Solid type arch bridge using steel frame construction and this style of construction}

The present invention relates to a filling arch bridge and a construction method using a steel structure in more detail to lay the foundation of the bridge on the floor, to build a steel reinforcing steel bridge bridges and bridges on the foundation formed on the floor and cast concrete, the bridge It is easy to work in the field work by manufacturing the arch rib of steel reinforcing structure which is connected to the bridge and the shift, and the structural calculation and the reinforcing The present invention relates to a cladding arch bridge and a construction method using an easy steel structure.

In general, concrete has the advantage of strong compressive strength, but weak strength in tensile strength and flexural strength. In order to solve the above problems, the reinforcing bars and concrete are compensated for by integrating reinforcing steel with strong tensile strength and bending to the inside of the concrete.In order to see the optimal effect of the strength of the structure, the reinforcing bar must be purchased in concrete. A certain amount of concrete covering thickness is required, and the safety length of the structure can be improved when the anchoring length is required to be extended and buried to reinforce the design standard yield strength of the reinforcing bar in the dangerous section.

In the reinforced arch bridge of reinforced concrete structure, the main reinforcing bars were assembled by reinforcing the reinforcing bars in the longitudinal direction of the bridge to conform to the arch shape.However, the method described above was used to stiffen H25mm, H29mm, H32mm, etc. when constructing the arch rib of the bridge. Due to the use of this very strong cast iron, the rigidity of the rebar is so strong that it is difficult to process it into curves for structural calculation, and much effort and high construction cost are required for precise construction of copper rims and formwork when forming arch ribs. .

Looking at the arch ring construction method (10-1999-0018836) of the steel reinforced concrete arch bridge conventionally filed in connection with the present invention as shown in Figure 3 a plurality of arched H-shaped steel (2) at regular intervals in the longitudinal direction of the bridge A plurality of connecting members 14 are coupled to the upper and lower flanges of the arcuate H-beams 2 so as to connect the arcuate H-beams 2 to each other, and to the inner lower flanges of the arcuate H-beams 2. (13) is coupled to form a synthetic slab by connecting the arc-shaped H-beams (2), the compressed cast steel (7) is straight reinforcement at one time from one end to the other end of the width of the upper bridge of the arc-shaped H-beams (2), Tensile cast steel (3) is cut in the width direction of the bridge in the width direction of the bridge is connected to the arched H-shaped steel (2) between the arcuate H-shaped steel (2) and the lower flange, and the compressed cast iron (7) and the tensile cast steel ( 3) connected to the bridge In the longitudinal direction of the reinforcement bar (4) is reinforced, the compression cast iron (7) and the tensile cast steel (3) are connected to each other by connecting reinforcing bars (6), the concrete (12) to the upper side of the compressed cast steel (7) arched H It consists of casting to the inside of the steel (2).

According to the conventional method as described above, the tension cast steel that is subjected to tension during concrete casting is connected between the arc-shaped H-beams in a broken state, so that the reinforcing length of the steel according to the specification does not come out and it is not properly stressed. It does not play a role, and concrete is not placed to cover the upper and lower celestial bodies, but only to the inner side of the arc-shaped H-beam lower flange, so that the outer surface of the H-beam lower flange and the outer surface of the connecting material are not covered with concrete and exposed to the outside. As it is in the state, the concrete coating thickness for the reinforcing steel and steel frame is not formed, so it cannot bear the load properly.

The present invention is to solve the conventional problems as described above, when manufacturing the arch rib of the steel structure to reinforce the cast iron straight line to include all the arch-shaped H-shaped steel in the width direction of the bridge to improve the difficulty of the processing of the cast iron, It is to provide the filling arch bridge and construction method using the steel frame structure which is easy to combine with the arch rib of the steel frame structure by constructing the alternating and pier made of the steel frame structure.

The present invention is to reinforce the reinforcing steel reinforcement to the steel structure and the concrete bridges and bridges, a plurality of arched H-beams and the arched H-beams coupled to the bridges and piers in a vertical direction to the width of the bridge in the vertical direction The steel reinforcement is connected to the main reinforcement, the reinforcement reinforcement connected to the main reinforcement in the longitudinal direction of the bridge, and the arches composed of the arch-shaped H-shaped steel, cast reinforcement, reinforcement reinforcement, etc. It is an object of the present invention to form a composite cross-section of the reinforcing steel structure and concrete, and to pour concrete to cure the walls of the bridge.

1 is a three-dimensional schematic diagram showing the steel structure of the present invention,

2 is a front view of the chest wall concrete casting of the present invention,

3 is a partial cross-sectional view of A-A 'of FIG.

4 is a steel structure diagram (partial enlarged cross-sectional view B-B ') of the conventional arch bridge,

5 is a construction flowchart of the substructure of the present invention,

Figure 6 is a superstructure construction flowchart of the present invention.

<Description of the symbols for the main parts of the drawings>

(1): arch rib (2): arched H-beam

(3): tensile reinforcing bar (4): lifting bar

(5): reinforcing bars (6): connecting bars

(7): compressed cast iron (8): formwork

(9): clubbing (10): discarded concrete

(11): concrete spacer 12: concrete

(13): Tech Plate (14): Connector

(15): chest wall (16): shift

(17): piers

When described in detail with reference to the accompanying drawings, the configuration and the operation of the embodiment of the present invention to achieve the object as described above and to perform the task for eliminating the conventional drawbacks.

1 is a three-dimensional schematic diagram showing the steel structure of the present invention, by joining a plurality of section steel to form a plurality of inverted T-frame at a predetermined interval, the inverse T of the other side by joining the section steel on the lower side of the inverted T-frame It joins with the frame and forms an alternating portion, and the arched H-shaped steel 2 is coupled to both sides to the coupling portion formed at both ends of the upper side of the inverted T-frame, so that multi-span is possible during construction of the bridge.

Figure 2 is a front view of the chest wall concrete casting prior to the present invention, the alternating (16) pier 17 consisting of a steel reinforcing structure, and the arch rib of the steel reinforcing structure (1) coupled to the alternating 16 and the pier (17) Consisting of, the alternating portion 16 is formed on both sides of the upper portion of the alternating portion 16 to be coupled to the arch rib (1) on both sides during the construction of the multi-span bridge.

FIG. 3 is a partial cross-sectional view of AA ′ of FIG. 2, in which a plurality of arcuate H-beams 2 are formed in a longitudinal direction of the bridge, and compressed cast steel 7 is lower than the arcuate H-beams 2. Tensile cast steel (3) is straight at one end from one end of the bridge width to the other end of the straight line, connected to the compression cast iron (7) and the tensile cast iron (3) up and down in the same direction as the arched H-shaped steel (2) Uplifting reinforcing bars 4 in two directions, connecting reinforcing bars 6 for connecting the tensile cast bar 3 and the compressed cast bar 7, and structurally safe coating thickness inside and outside the arch rib 1 Concrete 12 is poured.

5 is a construction flowchart of the substructure of the present invention, the foundation concrete for constructing the alternating 17 and the pier 16 and cast the discarded concrete 10 on the bottom surface of the excavated concrete after the discarded concrete (10) The concrete spacer 11 is installed on the upper part and the reinforcing bar 5 is disposed on the upper part thereof, the shift 16 and the pier 17 are constructed on the bottom of the foundation, and the shift 16 is arched on one side. The coupling portion is formed to be coupled, the bridge 17 is formed in the coupling portion so that the arch ribs can be coupled to both sides, the reinforcing bar (5) between the alternating structure 16 and the steel structure of the bridge 17 The strength of the bridge and alternating 16 and piers 17 consists of pouring concrete 12 until the joints to which the arch ribs 1 are coupled.

6 is a construction flowchart of the superstructure of the present invention, in which the arch rib 1 of the steel reinforcing structure is coupled to the coupling portion formed at the upper portion thereof, and the formwork 8 and the copper bar 9 are installed on the arch rib 1. After it is fixed, the concrete is poured, and the remaining chest wall portion 15 consists of pouring concrete.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

The effect of the present invention can be expected by the configuration and action as described above is easy to work due to the factory fabrication of the steel structure, the straight reinforcement in accordance with the width of the bridge in the vertical direction to the arch beam without the circular reinforcement It is a very useful invention that alleviates the difficult working conditions that require the production and assembly of reinforcing steel bars, and improves the durability and the strength of the bridge by integrating concrete and steel frame by covering the entire shift, piers and arch ribs of steel structure with concrete. .

Claims (2)

In the filling arch bridge formed by placing concrete on the shift 16 and the bridge 17 forming the lower part of the bridge and the arch ribs placed on the upper portion, and casting concrete on the chest wall, A bridge (17) formed by joining a plurality of section steels and reinforcing reinforcing bars (5) between the section steels and having one coupling portion formed at an upper side thereof, Joining a plurality of section steel to form an inverted T-frame, reinforcing bars (5) between the section steel, the coupling portion is formed on both upper ends so that the arcuate H-shaped steel (2) is coupled and the lower section protrudes on one side Alternate 16 of steel reinforcing structures joined to the inverted T frame on the other side, Coupled to the alternating 16 and the bridge 17, a plurality of arc-shaped H-shaped steel (2) is formed in the longitudinal direction of the bridge and the width of the bridge from one end to the other end of the upper and lower sides of the arched H-shaped steel (2) Tensile cast iron (3) and compressed cast iron (7) are placed in a straight line at a time, and an arcuate reinforced bar (4) is connected to tensile cast steel (3) and compressed cast steel (7), respectively, alternating (16) and pier (17). And reinforced therebetween, each reinforcing bar having an arch rib 1 consisting of connecting reinforcing bars 6, Each arch rib 1 is coupled to the alternating 16 and the piers 17, and the concrete is cast to form an integrated arch rib and concrete, characterized in that consisting of steel structure formed by pouring concrete on the side wall of the bridge A loyal arch bridge. Constructing a bridge concrete 16 and bridge 17 in a reinforced concrete structure; and a plurality of arcuate H-shaped steels 2 are formed in the bridge 16 and the bridge 17 in the longitudinal direction of the bridge, and the compression cast steel (7) is straightened to the upper side of the arc-shaped H-beams (2) in a straight line from one end of the width to the other end of the bridge at once, and the tensile cast steel (3) is cut between the arc-shaped H-beams (2) in the width direction of the bridge And reinforced by connecting arcuate reinforced reinforcing bars (4) to the compressed cast iron (7) and tensile cast iron (3), respectively, and connecting the compressed cast iron (7) and tensile cast iron (3) by connecting bars (6) Assembling the arch rib 1, coupling the arch rib 1 to the shift 16 and the pier 17 to pour concrete, and constructing concrete to the chest wall 15 of the bridge. In the construction method of the filling arch bridge, The shift 16 assembles the section steel into an inverted T-shaped structure, reinforces the reinforcing bar 5 between the section steel, forms a joint at both sides of the upper part, and places the concrete, and the bridge 17 joins the section steel between the section steels. Reinforcing bar (5) is formed by the reinforcement, and after forming the coupling portion on the upper side of the concrete to build the alternating (16) and pier (17) of the steel reinforced concrete structure, At the time of assembling the arch rib 1, the step of reinforcing the tensile cast iron (3) and the compressed cast iron (7) in the upper and lower sides of the arc-shaped H-shaped steel (2) in a straight line from one end of the width to the other end of the bridge, Placing concrete on the front surface of the arch rib 1 so that the arch rib 1 of the steel reinforcing steel structure is not exposed to the outside when the concrete is placed on the assembled arch rib 1, Method of constructing a filling arch bridge using a steel structure, characterized in that the method is installed in the step of placing concrete on the chest wall portion (15) of the bridge after pouring concrete to the arch rib (1).