Flexible temporary ceiling used for incremental launching construction and capable of guaranteeing traffic safety

Abstract

The invention relates to the technical field of bridge construction engineering, and discloses a flexible temporary ceiling used for incremental launching construction and guaranteeing traffic safety, which comprises a steel truss girder, two groups of supporting steel frames, a plurality of supporting steel columns, a plurality of supporting steel columns, a plurality of supporting steel columns, a plurality of supporting steel columns, a plurality of supporting steel columns, a plurality of supporting steel columns, a plurality of supporting steel columns and a plurality of supporting steel columns, wherein the two ends of the steel truss girder are respectively erected on two column piers which are respectively positioned on two sides of a road below a bridge; the two guide steel pipes are limited to the two sets of supporting steel frames in the longitudinal direction of the bridge, and the two sides of the shed cloth are connected to the corresponding guide steel pipes through first hanging rings. At least two supporting steel frames are arranged in each group; one part of the supporting steel frame is fixedly connected with the steel truss girder lower chord steel beam, and the other part of the supporting steel frame is bent to form a shape semi-wrapping the guide steel pipe; the first hanging ring is slidably arranged on the guide steel pipe in a sleeving mode. The first hanging ring is connected with a traction rope. The supporting steel frame is installed on the steel truss girder and used for placing the guide steel pipe, then the two sides of the shed cloth are connected to the guide steel pipe through the hanging rings, the structure is simple, and installation and disassembly are convenient.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction engineering, and in particular to a flexible temporary ceiling used for jacking construction and ensuring traffic safety. Background Art

[0002] Bridges are a common type of infrastructure, mainly used to cross terrain obstacles such as roads, rivers, and valleys; they can also connect different parts of a city or different cities, promoting economic development and the flow of people.

[0003] When a part of the bridge is being built, it may be necessary to cross the existing road below. The traffic on the road below cannot be interrupted, so the pre-assembled bridge is pushed over by jacking, and the bridge can choose the structure of steel truss. When using steel truss, in order to reduce the weight of the bridge during jacking, the concrete bridge deck is generally not laid on the steel truss. After the jacking is completed, the concrete bridge deck is laid, and then the bridge deck system is constructed. The jacking itself does not affect the traffic on the road below, but for the steel truss bridge, after the jacking is completed, there is no bridge deck, only two sets of supporting steel frames on the left and right, and the longitudinal and transverse steel beams between them, or in other words, there is only a grid skeleton at the bridge deck position. After the jacking is completed, the concrete bridge deck needs to be laid and the bridge deck system needs to be constructed. In this process, some building materials may fall, which will bring safety hazards to the vehicles traveling on the road below. In fact, only steel truss bridges have this hazard during jacking construction. Therefore, in order to ensure that the bridge deck construction above does not affect the traffic on the road below, a temporary ceiling can be made to separate the bridge construction above from the traffic below. Existing temporary ceilings, such as the Chinese utility model patent with document number CN204627104U, entitled a ceiling, have a relatively complex structure and are inconvenient to install and disassemble. Therefore, a temporary ceiling with a simple structure and easy installation and disassembly is needed. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a flexible temporary ceiling for jacking construction to ensure traffic safety. A supporting steel frame is installed on the steel truss to place a guide steel pipe, and then the two sides of the awning cloth are connected to the guide steel pipe through hanging rings. The structure is simple and the installation and disassembly are convenient.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a flexible temporary canopy for jacking construction to ensure traffic safety, comprising a steel truss beam with two ends respectively erected on two piers respectively located on both sides of the road under the bridge, two groups of supporting steel frames respectively connected to the two lower chord steel beams of the steel truss beam, two guide steel pipes respectively restricted on the two groups of supporting steel frames along the longitudinal direction of the bridge, and a canopy cloth connected to the corresponding guide steel pipes through a first hanging ring on both sides; The supporting steel frames on the same lower chord steel beam form a group; each group of the supporting steel frames has at least two supporting steel frames, and are fixed on the lower chord steel beam of the steel truss along the longitudinal direction of the bridge; a part of the supporting steel frame is fixedly connected to the steel truss, and the other part is bent into a shape that half wraps the guide steel pipe; the first hanging ring can be slidably mounted on the outside of the guide steel pipe.

[0006] Furthermore, the supporting steel frame includes a first type of supporting steel frame and a second type of supporting steel frame; the bending portion of the first type of supporting steel frame is rectangular; and the bending portion of the second type of supporting steel frame is arc-shaped.

[0007] Furthermore, the guide steel pipe is tied to the support steel frame by steel wire at the contact point with the support steel frame.

[0008] Furthermore, a plurality of the first hanging rings are fixedly connected to one side of the shed cloth, and any of the first hanging rings closest to the supporting steel frame in the same group is detachably adhered to the outer side of the guide steel pipe through a temporary simple fixing belt.

[0009] Furthermore, the awning cloth includes a first type of awning cloth and a second type of awning cloth; when the first type of awning cloth is used, the corresponding lateral distance of the road under the bridge is smaller than the corresponding lateral distance of the road under the bridge when the second type of awning cloth is used.

[0010] Furthermore, when there are two supporting steel frames in the same group, the first type of shed cloth is used, and the two supporting steel frames are respectively located at the two ends of the guide steel pipe.

[0011] Furthermore, when there are three supporting steel frames in the same group, the second type of shed cloth is used; the second type of shed cloth includes a first shed cloth and a second shed cloth, and the first shed cloth and the second shed cloth are separated by a supporting steel frame with the three supporting steel frames located in the middle position.

[0012] Furthermore, one end of the awning cloth is a fixed end, and the other end is a movable end; the first lifting ring corresponding to the movable end is connected to the second lifting ring, the second lifting ring is tied to one end of the pulling rope, and the other end of the pulling rope is tied with a handle.

[0013] The beneficial effects of the present invention are as follows: a supporting steel frame is installed on the steel truss across the road to place the guide steel pipe, and then the two sides of the awning cloth are respectively connected to the guide steel pipe through hanging rings, and the temporary ceiling can be installed and disassembled by pushing and pulling the awning cloth; the structure is simple, the installation and disassembly are convenient, and the cost of parts and construction costs are also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the first type of awning cloth in the unfolded state; Figure 2 for Figure 1The enlarged structural diagram at A in the middle; Figure 3 This is a schematic diagram of the partial structure of the first type of awning cloth after it is unfolded; Figure 4 This is a schematic diagram of the structure of the first type of awning cloth in a retracted state; Figure 5 This is a schematic diagram of the structure of the second type of awning cloth in the unfolded state; Figure 6 This is a schematic diagram of the structure of the second type of awning cloth in a retracted state; Figure 7 This is a schematic diagram of the second supporting steel frame structure.

[0015] In the figure: 1. Steel truss; 101. Column pier; 2. Road under the bridge; 3. First type of supporting steel frame; 301. Second type of supporting steel frame; 4. Guide steel pipe; 401. Steel wire; 5. First lifting ring; 501. Temporary simple fixing belt; 6. First type of tarpaulin; 601. First tarpaulin; 602. Second tarpaulin; 7. Second lifting ring; 8. Pull rope; 9. Handle. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention are described clearly and completely below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0017] The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are only for reference to the orientation of the drawings. The directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0018] Example: like Figure 1-Figure 7 As shown, a flexible temporary canopy for jacking construction to ensure traffic safety comprises a steel truss 1 with two ends respectively erected on two piers 101 respectively located on both sides of a road 2 under a bridge, two groups of supporting steel frames respectively connected to two lower chord steel beams of the steel truss 1, two guide steel pipes 4 respectively restricted on the two groups of supporting steel frames along the longitudinal direction of the bridge, and canopy cloths connected to the corresponding guide steel pipes 4 on both sides through first hanging rings 5; The supporting steel frames on the same lower chord steel beam form a group; each group of supporting steel frames has at least two supporting steel frames, and are fixed on the lower chord steel beam of the steel truss 1 along the longitudinal direction of the bridge; one part of the supporting steel frame is fixedly connected to the steel truss 1, and the other part is bent into a shape that half wraps the guide steel pipe 4; the first hanging ring 5 can be slidably mounted on the outside of the guide steel pipe 4; the awning cloth is located between two adjacent supporting steel frames in the same group.

[0019] The steel truss beam 1 comprises two lower chord steel beams arranged at a distance in the transverse direction of the bridge, the two lower chord steel beams and two sets of web members respectively connecting the upper and lower corresponding lower chord steel beams and the lower chord steel beams.

[0020] The supporting steel frame includes a first supporting steel frame 3 and a second supporting steel frame 301; the bending part of the first supporting steel frame 3 is rectangular, and the length of the rectangle is greater than the diameter of the guide steel pipe 4; the bending part of the second supporting steel frame 301 is arc-shaped, and the diameter of the arc is greater than the diameter of the guide steel pipe 4; the transverse direction of the bridge is the direction in which the road 2 under the bridge extends.

[0021] The guide steel pipe 4 is tied to the support steel frame by the steel wire 401 at the contact point with the support steel frame; the steel wire 401 is used for tying to prevent the guide steel pipe 4 from moving and improve the stability of the shed cloth.

[0022] A plurality of first lifting rings 5 ​​are fixedly connected to one side of the shed cloth. The first lifting ring 5 closest to the supporting steel frame is detachably adhered to the outer side of the guide steel pipe 4 through a temporary simple fixing belt 501. The temporary simple fixing belt 501 can be made of transparent tape, etc., to ensure that the first lifting ring 5 is easy to remove during disassembly.

[0023] The awning cloths include a first type of awning cloth 6 applied to a shorter lateral distance of the road under the bridge 2 , and a second type of awning cloth applied to a longer lateral distance of the road under the bridge 2 .

[0024] The number of supporting steel frames is determined according to the lateral distance of the road 2 under the bridge; when there are two supporting steel frames in the same group, the first type of awning cloth 6 is used, and the two supporting steel frames are respectively located at the two ends of the same guide steel pipe 4; the first type of awning cloth 6 is pushed and pulled from one supporting steel frame to another.

[0025] When there are three supporting steel frames in the same group, the second type of shed cloth is used; the second type of shed cloth includes a first shed cloth 601 and a second shed cloth 602, and the first shed cloth 601 and the second shed cloth 602 are separated by a supporting steel frame located in the middle of the three supporting steel frames; the first hanging ring 5 closest to the supporting steel frames located at the two ends connected to the first shed cloth 601 and the second shed cloth 602 is fixed by a temporary simple fixing belt 501, at this time, the first shed cloth 601 and the second shed cloth 602 are pushed and pulled toward the middle; it can also be that the first hanging ring 5 closest to the supporting steel frame located in the middle is fixed by a temporary simple fixing belt 501, at this time, the two first shed cloths 601 and the second shed cloths 602 are pushed and pulled toward the two ends respectively.

[0026] One end of the shed cloth is a fixed end, and the other end is a movable end. When a temporary simple fixing belt 501 is provided, this end is the fixed end. The first lifting ring 5 corresponding to the movable end is connected to the second lifting ring 7. The second lifting ring 7 is tied to one end of a pulling rope 8, and the other end of the pulling rope 8 is tied to a handle 9. Since the shed cloth is relatively high, a hanging pulling rope 8 is required, and the handle 9 is used for convenience in pulling.

[0027] Construction process: As the span of the steel truss is generally significantly larger than the width of the road 2 under the bridge, the tarpaulin does not need to completely wrap the entire steel truss.

[0028] After the jacking is in place and before the bridge deck is constructed, the guide steel pipe 4 is set at the lower end of the steel truss 1, so the awning cloth can only be located on the inner side of the inner edge of the lower chord steel beam. First, select the lower chord steel beam on one side, and weld two supporting steel frames at the lower chord steel beam positions corresponding to the two ends of the guide steel pipe 4. If the guide steel pipe 4 is too long, several supporting steel frames can also be welded in between. This is to prevent the guide steel pipe from falling easily due to being in a long cantilever state during dismantling; however, a awning cloth needs to be set between two adjacent supporting steel frames. A supporting steel frame also needs to be welded at the same position of the lower chord steel beam of the steel truss 1 on the opposite side. Next, pass the awning cloth with the first hanging ring 5 through the two guide steel pipes 4, and move it to one side of the two guide steel pipes 4, so that the awning cloth is in a retracted state.

[0029] When pulling the awning cloth, it is pulled with the help of the pulling rope 8. Initially, the pulling rope 8 is attached to the guide steel pipe 4 with a simple adhesive tape, so that when the rope is slightly pulled, the adhesive tape will loosen, and then the rope will pull the first ring on the awning cloth to gradually unfold it. When dismantling, the pulling rope 8 can be used to directly pull the awning cloth out at the tail of the guide steel pipe 4, and the guide steel pipe 4 can be slowly pulled out from one end of the supporting steel frame. The supporting steel frame does not affect the normal use of the viaduct, so it does not need to be dismantled. At this point, the flexible ceiling has been successfully constructed.

[0030] The above is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A flexible temporary ceiling for jacking construction to ensure traffic safety, characterized by: It comprises a steel truss (1) with two ends respectively erected on two piers (101) respectively located on both sides of a road (2) under the bridge, two groups of supporting steel frames respectively connected to two lower chord steel beams of the steel truss (1), two guide steel pipes (4) respectively restricted on the two groups of supporting steel frames along the longitudinal direction of the bridge, and a shed cloth connected to the corresponding guide steel pipes (4) on both sides through a first hanging ring (5); The supporting steel frames on the same lower chord steel beam form a group; each group of the supporting steel frames has at least two supporting steel frames, which are fixed on the lower chord steel beam of the steel truss beam (1) along the longitudinal direction of the bridge; a part of the supporting steel frame is fixedly connected to the steel truss beam (1), and the other part is bent into a shape that half wraps the guide steel pipe (4); the first hanging ring (5) is slidably mounted on the guide steel pipe (4).

2. According to claim 1, a flexible temporary ceiling for jacking construction to ensure traffic safety is characterized by: The support steel frame comprises a first support steel frame (3) and a second support steel frame (301); the bent portion of the first support steel frame (3) is rectangular; and the bent portion of the second support steel frame (301) is arc-shaped.

3. The flexible temporary ceiling for ensuring traffic safety for jacking construction according to claim 1 is characterized by: The guide steel pipe (4) is tied to the support steel frame via a steel wire (401) at the point where it contacts the support steel frame.

4. The flexible temporary ceiling for ensuring traffic safety for jacking construction according to claim 1 is characterized by: A plurality of the first hanging rings (5) are fixedly connected to one side of the awning cloth, and any one of the first hanging rings (5) closest to the supporting steel frame in the same group is detachably adhered to the outer side of the guide steel pipe (4) via a temporary simple fixing belt (501).

5. The flexible temporary ceiling for ensuring traffic safety for jacking construction according to claim 1 is characterized by: The awning cloth comprises a first type of awning cloth (6) and a second type of awning cloth; when the first type of awning cloth (6) is used, the corresponding lateral distance of the road under the bridge (2) is smaller than the corresponding lateral distance of the road under the bridge (2) when the second type of awning cloth is used.

6. The flexible temporary ceiling for ensuring traffic safety for jacking construction according to claim 5 is characterized by: When there are two supporting steel frames in the same group, the first type of shed cloth (6) is used, and the two supporting steel frames are respectively located at the two ends of the guide steel pipe (4).

7. The flexible temporary ceiling for ensuring traffic safety for jacking construction according to claim 5 is characterized by: When there are three supporting steel frames in the same group, the second type of shed cloth is used; the second type of shed cloth includes a first shed cloth (601) and a second shed cloth (602), and the first shed cloth (601) and the second shed cloth (602) are separated by a supporting steel frame with the three supporting steel frames located in the middle.

8. The flexible temporary ceiling for ensuring traffic safety for jacking construction according to claim 1 is characterized by: One end of the awning cloth is a fixed end, and the other end is a movable end; a first lifting ring (5) corresponding to the movable end is connected to a second lifting ring (7), the second lifting ring (7) is tied to one end of a pulling rope (8), and the other end of the pulling rope (8) is tied to a handle (9).

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