WO2017166160A1 - Short-line match-casting-based precast template system for girder bridge having composite structure and corrugated steel webs - Google Patents

Abstract

A short-line match-casting-based precast template system for a girder bridge having a composite structure and corrugated steel webs. The system comprises: a fixed end formwork (1) and a fixed end formwork support (2), outer formworks (3) and outer formwork supports (4), an inner formwork (5) and an inner formwork support (6), a bottom formwork (7) and a bottom formwork support (8), a bottom formwork trolley (9), and a hydraulic system. The fixed end formwork (1) comprises an upper portion (14) and a lower portion (15), and push-pull movable blocks (16) are provided at where the upper portion (14) abuts the corrugated steel webs (13) to facilitate placement of the corrugated steel webs (13) into the formworks. Also disclosed are a device for sealing a steel-concrete joint used in the short-line match-casting-based precast template system, and a method of applying the short-line match-casting-based precast template system. The template system can solve the problem of high installation precision requirements of corrugated steel webs (13) and difficulties in placing rebar cages (45, 46) in formworks.

Description

Short-line matching prefabricated formwork system for corrugated steel web composite structural beam bridge Technical field

The invention relates to the field of bridge construction technology. More specifically, the present invention relates to a short-line matching pre-formed formwork system for a corrugated steel web composite structural beam bridge.

Background technique

In recent years, the corrugated steel web composite structure bridge has been widely used in China and the world because of its light weight, high pre-stress efficiency, good durability and beautiful appearance. At present, this type of bridge basically adopts cantilever pouring and bracketing. Pouring construction process. With the development of industrialization of bridges, segmental prefabrication and assembly technology with advantages of energy saving, environmental protection, high efficiency and durability has been promoted in concrete bridges. If this technology is introduced into the construction of corrugated steel web composite structural bridges, it can be significantly improved. In addition to the construction quality and speeding up the construction, it can also improve the stress performance and seismic performance of conventional segmental beam joints and reduce construction costs.

The key to the stencil system is the use of segmental prefabrication assembly techniques, especially short-line matching prefabricated construction bridges. Compared with the ordinary concrete segmental beam bridge, the corrugated steel web combined segmental beam bridge increases the corrugated steel web installation process. In order to achieve the steel-mixed matching connection, the corrugated steel web installation positioning accuracy is high; the corrugated steel web phase Docking or lap jointing between adjacent segments, the fixed end die or matching beam at both ends of the corrugated steel web segment is often less than 1 cm, and the fixed end of the reinforcing concrete cage of the common concrete segment is fixed from the fixed end die or the matching beam. 4~6cm thickness of the protective layer, in the case where the fixed end mold or the matching beam is positioned at both ends of the section to be poured, the overall steel cage of the corrugated steel web combined box girder section is difficult to enter the mold; The connection structure of the area is complicated, the quality of concrete pouring is difficult to guarantee, and the sealing performance of the template is also higher. To this end, it is necessary to develop a short-line matching prefabricated formwork system with complete functions, convenient construction, and suitable for corrugated steel web composite beam segments.

Summary of the invention

It is an object of the present invention to address at least the above problems and to provide at least the advantages that will be described later.

Still another object of the present invention is to provide a short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge, which facilitates the integral insertion of the steel cage by the arrangement of the movable block, and improves the installation positioning accuracy by the three-way positioning device. It has the characteristics of high precision, convenient assembly and disassembly, and strong versatility.

Another object of the present invention is to provide a steel-mixed joint sealing device which is arranged in a steel-mixed joint zone to prevent dripping on the inner mold, the outer mold and the corrugated steel web during the pouring process, and at the same time, the corrugated steel web limit Position positioning has the advantages of simple structure, convenient disassembly and strong practicability.

Another object of the present invention is to provide an application method of a short-line matching prefabricated formwork system, which is convenient for the steel cage overall Into the mold, improve the positioning accuracy of the installation and the quality of concrete pouring.

In order to achieve these and other advantages in accordance with the present invention, a short wire mating prefabricated formwork system for a corrugated steel web composite structural beam bridge is provided, comprising: a fixed end mold and a fixed end mold bracket, an outer mold and an outer mold bracket. , the inner mold and the inner mold bracket, the bottom mold and the bottom mold bracket, the bottom mold trolley, and the hydraulic system, and the matching segments of the corrugated steel web composite box girder form a section to be poured for the corrugated steel web composite box girder The space to be integrally molded, the section to be poured of the corrugated steel web composite box girder comprises a top steel cage, a bottom reinforcement cage and at least two corrugated steel webs connecting the two, the fixed end mold comprising a top steel reinforcement cage, a corresponding upper portion and a lower portion of the bottom reinforcement cage, wherein the upper portion is provided with a movable block opposite to the corrugated steel web, and the movable block is driven along the length of the beam The direction is movable to form a notch that does not interfere with the corrugated steel web into the mold, wherein the movable block has a width not less than a width of the steel top plate of the corrugated steel web, and a height penetrates the upper portion.

Preferably, the short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge, the fixed end mold facing away from the side surface of the corrugated steel web is provided with a maximum of the movable block And a limiting device for moving the distance, when the movable block is in contact with the limiting device, forming a gap that does not interfere with the corrugated steel web into the mold.

Preferably, the short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge, the limiting device comprises a dome-shaped push-pull frame, the push-pull frame comprising a vertical connection to the fixed end mold A pair of side plates and a connecting plate connecting the two sides thereof, a pair of the side plates are symmetrically disposed on two sides of one of the movable blocks, and are not in contact with each other.

Preferably, the short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge, the limiting device further comprising a hand crank gear disposed at a center of the connecting plate, the movable block a toothed rod extending perpendicularly away from a side surface of the corrugated steel web, the toothed rod passing through the connecting plate and meshing with the hand crank gear, the hand crank gear Rotation drives the movable block to move.

Preferably, the short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge is provided with a three-way positioning device on the main beam, the three-way positioning device comprising at least one three To the jack, the steel pedestal of the three-way jack is mounted on one side main beam of the outer mold, and the magnetic base of the top jack is adsorbed on one side surface of the corrugated steel web.

Preferably, the short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge, the three-way positioning device comprising three three-way jacks, at least two distributed on one side of the outer mold On the main beam.

Preferably, the short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge is provided with a corrugated steel web positioning device on the main beam, the corrugated steel web positioning device comprising At least one pair of supporting screws and at least one pair of positioning screws, one end of the supporting screw is mounted on the inner mold bracket, and the other end is mounted on a main beam of the inner mold, and one end of the positioning screw Mounted on the main beam of the inner mold, the other end abuts against the corrugated steel web On the other side of the surface.

Preferably, the short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge, the outer mold abutting a side edge of the steel top plate of the corrugated steel web by an upper outer corner mold, The inner mold abuts against the other side of the steel top plate of the corrugated steel web by an upper inner corner mold, and the upper outer corner mold and the upper inner corner mold are respectively sealed and fixed by a detachable steel-mixed joint sealing device The corrugated steel web.

A steel-mixed joint sealing device for a short-line matching prefabricated formwork system, which is installed on an upper outer corner mold of an outer mold or an upper inner corner mold of an inner mold and a corrugated steel web of a corrugated steel web composite box girder to be poured The joint of the steel roof, including:

a stopper plate, which is fixedly connected to the upper outer corner die or the lower end surface of the upper inner corner die, and the piercing ear plate is provided with at least two first through holes, and the axis of the first through hole is parallel a lower end surface of the upper outer corner mold or the upper inner corner mold;

a slurry stopper seat having one end at least two second through holes matched with the stopper ear plates, and the other end of which is provided with a threaded hole, and the second through hole and one of the first through holes Removably connected by a connecting member, the axis of the threaded hole being perpendicular to a lower end surface of the upper outer corner mold or the upper inner corner mold;

Jacking the bolt and the nut, the rod portion of the top tightening bolt is screwed into the threaded hole to be screwed with the nut, and the free end of the jacking bolt is provided with an end panel;

An ethylene-vinyl acetate copolymer foamed surface having a square structure, wherein upper and lower surfaces of the ethylene-vinyl acetate copolymer foam surface are respectively opposite to a lower surface of the steel top plate of the corrugated steel web, and the top bolt The end panels are offset, and the left and right sides respectively abut against the outer surface of the upper outer corner mold or the upper inner corner mold and the butt holder.

Preferably, the steel-mixed joint sealing device for a short-line matching pre-formed formwork system includes an integrally formed mutually perpendicular first plate body and a pair of second plate bodies, the first The plate body is parallel welded to the lower end surface of the upper outer corner mold or the upper inner corner mold, the pair of the second plate bodies are parallel to each other, and the second plate body is provided with two first through holes, the first through hole The axis is parallel to the first plate.

Preferably, the steel-mixed joint sealing device for a short-line matching pre-formed formwork system includes an integrally formed third plate body, a fourth plate body and a pair of fifth plates which are perpendicular to each other The third plate body and the fourth plate body have an L-shaped structure, a pair of the fifth plate bodies are parallel to each other, and two right-angled sides of the fifth plate body are respectively associated with the third plate The fourth plate body is fixedly connected, the fourth plate body is provided with two threaded holes, the threaded holes do not interfere with the fifth plate body, and the fifth plate body is provided with two Two through holes, the axes of the second through holes and the threaded holes are perpendicular to each other, and both are parallel to the third plate body.

Preferably, the steel-mixed joint sealing device for the short-line matching prefabricated formwork system, the fifth plate body The distance from the free end to the third plate body is greater than the distance from the free end of the fourth plate body to the third plate body, and the second through hole is distributed in the fifth plate body to extend the On the part of the fourth plate.

The application method of the short-line matching prefabricated template system according to any one of the preceding claims includes the following steps:

Step 1. Install and debug the fixed end mold and the fixed end mold bracket, the outer mold and the outer mold bracket, the inner mold and the inner mold bracket, the bottom mold and the bottom mold bracket, the bottom mold trolley, and the hydraulic system, and the bottom mold Adjusting the matching segment to a predetermined position by the trolley, and tightening the outer die screw to form a space for the entire section of the to-be-cast section of the corrugated steel web composite box girder;

Step 2: removing the movable block, lifting the integral part of the to-be-cast section into the mold, resetting the movable block so as to be flush with the fixed end mold, and setting at least one of three on the main beam of the outer mold To the jack, the magnetic base of the top jack is adsorbed on the corrugated steel web, and the aerial attitude of the corrugated steel web is adjusted;

Step 3: The inner mold enters, and at least one pair of supporting screws are installed on the main beam and the inner mold bracket of the inner mold, and at least one pair of positioning screws are installed on the main beam and the corrugated steel web of the inner mold, and the top is fixed to be fixed. Corrugated steel web;

Step 4: Install a steel-mixed joint sealing device on both sides of the steel top plate of the corrugated steel web and the upper outer corner mold of the outer mold and the upper inner corner mold of the inner mold, seal the gap, and sequentially cast the corrugated steel web combination Floor concrete and roof concrete of the box beam to be poured;

Step 5: After the concrete to be poured reaches the strength, the temporary connection between the section to be poured and the matching section is released, the matching section is removed to the storage area, and the sealing device of the steel-mixed joint is released. The inner mold, the outer mold;

Step 6. As the new matching segment, the pour-completed segment is repeated, and steps 1 through 5 are repeated to enter the next cycle.

Preferably, the method for applying the short-line matching prefabricated formwork system, after the matching segment of the corrugated steel web composite box girder is located in the first step, the method further comprises: before the loading of the to-be-casting section into the mold, A temporary positioning frame for installing the corrugated steel web is removed, and the temporary positioning frame is removed before the corrugated steel web is positioned in the formwork system and the inner mold is entered.

Preferably, the short-line matching application method of the pre-formed template system comprises a cross bar and two diagonal bars, and the two ends of the cross bar are detachably fixed to the two corrugated steel webs The one end of the diagonal rod is fixed to the middle portion of the cross bar, and the other end is detachably fixed to one of the corrugated steel webs.

Preferably, the short-line matching method of applying the pre-formed template system, in the second step, injecting the lubricating oil on the left and right end faces and the lower end surface of the movable block before starting the movable block.

The invention includes at least the following beneficial effects:

First, the stencil system and the application method of the invention facilitate the integral splicing of the corrugated steel web composite beam steel cage: a movable block that can be pushed and pulled in a corresponding area of the fixed end mode wave web, and a steel cage with corrugated steel webs is solved. The overall mold problem;

Secondly, the template system and the application method of the invention have the high-precision positioning and positioning function of the corrugated steel web: the three-way positioning device arranged on the outer frame main frame beam can accurately adjust the spatial attitude of the corrugated steel web; The positioning screw on the main frame beam of the mold ensures that the corrugated steel web does not change during the concrete pouring process;

Thirdly, the steel-mixed joint sealing device of the present invention is installed at the joint of the outer corner mold, the inner corner mold and the upper end of the steel top plate of the corrugated steel web, and is disposed in the steel-mixed joint zone to prevent dripping into the inner mold during the pouring process, The outer mold and the corrugated steel web are simultaneously positioned and positioned on the corrugated steel web;

Fourth, the invention has the characteristics of high precision, convenient assembly and disassembly, strong versatility, and the electromechanical and liquid integration of each part of the template ensures the prefabrication speed of the assembly line.

Other advantages, objects, and features of the invention will be set forth in part in the description in the description which

DRAWINGS

1 is a schematic front view of a stencil system according to the present invention;

2 is a schematic side view showing the structure of the template system according to the present invention;

3 is a schematic structural view of a section to be poured according to the present invention;

4 is a schematic structural view of a fixed end mold according to the present invention;

Figure 5 is a side view showing the structure of the movable block and the limiting device according to the present invention;

Figure 6 is a top plan view of the movable block and the limiting device according to the present invention;

Figure 7 is a schematic view showing the mounting orientation of the three-way positioning device according to the present invention;

Figure 8 is a schematic view showing the mounting orientation of the three-way jack according to the present invention;

Figure 9 is a side view showing the structure of the three-way jack according to the present invention;

Figure 10 is a top plan view of the three-way jack of the present invention;

Figure 11 is a schematic view showing the installation orientation of the corrugated steel web positioning device according to the present invention;

Figure 12 is a partially enlarged schematic view showing the steel-mixed joint sealing device of the present invention;

Figure 13 is a schematic view showing the mounting orientation of the steel-mixed joint sealing device according to the present invention;

Figure 14 is a schematic structural view of a steel-mixed joint sealing device according to the present invention;

Figure 15 is a schematic structural view showing the parts of the steel-mixed joint sealing device according to the present invention;

Figure 16 is a top plan view of the buttress and the anti-slurry ear according to the present invention;

Figure 17 is a schematic view showing the structure of a temporary positioning frame according to the present invention.

detailed description

The present invention will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can refer to the text of the specification. It is enough to implement.

It is to be understood that the terms "having", "comprising" and "comprising" are used in the <RTIgt;

It should be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, The terms "horizontal", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", The orientation or positional relationship of the "inside", "outside" and the like is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplified description, and does not indicate or imply that the device or component referred to has the The specific orientation, construction and operation in a particular orientation are not to be construed as limiting the invention.

As shown in FIGS. 1 to 4, the present invention provides a short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge, comprising: a fixed end mold 1 and a fixed end mold bracket 2, an outer mold 3 and an outer mold bracket. 4. The inner mold 5 and the inner mold bracket 6, the bottom mold 7 and the bottom mold support 8, the bottom mold trolley 9, and the hydraulic system, and the matching section 34 of the corrugated steel web composite box girder are formed for the corrugated steel web combination The space to be poured 10 of the box girder is integrated into the space of the mold, and the section 10 to be poured of the corrugated steel web composite box girder comprises a top steel cage 45, a bottom steel cage 46 and at least two corrugated steel webs connecting the two a plate 13, the fixed end die 1 includes an upper portion 14 and a lower portion 15 corresponding to the top plate reinforcement cage 45 and the floor reinforcement cage 46, the upper portion 14 being opposite to the corrugated steel web 13 A movable block 16 is provided, which is movable along the length of the beam under power to form a notch that does not interfere with the patterning of the corrugated steel web 13, wherein the width of the movable block 16 Not less than the width of the steel top plate of the corrugated steel web 13, the height penetrates the upper portion 14.

In the above technical solution, FIGS. 1 to 2 show the fixed end mold 1 and the fixed end mold bracket 2, the outer mold 3 and the outer mold bracket 4, the inner mold 5 and the inner mold bracket 6, the bottom mold 7 and the bottom mold support 8 The relative positional relationship of the bottom mold trolley 9, the matching section 34 of the corrugated steel web composite box girder and the fixed end mold 1 form a space for the section 10 of the corrugated steel web composite box girder to be poured into the mold. As shown in FIG. 3, the to-be-cast section 10 of the corrugated steel web composite box girder includes a top rebar cage 45, a bottom rebar cage 46, and two corrugated steel webs 13 connecting the two, so the inner mold 5 and the outer mold The web section of the 3 is not provided with the panel and the secondary beam, only the main beam is provided, and the fixed end mold 1 is arranged to be respectively mounted on the upper portion 14 and the lower portion 15 of the fixed end mold bracket 2, as shown in Fig. 4, respectively The top steel cage 45 and the bottom steel cage 46 correspond to each other. Since the length of the two corrugated steel webs 13 is different from the matching section 34 and the fixed end mold 1 is less than 1 cm, the upper part 14 and the top steel bar are The cage 45 and the bottom plate reinforcement cage 46 are correspondingly provided with two movable blocks 16 which are movable along the length of the beam under power driving, and the power is That artificial, or a combination of mechanical and electrical forms, the width of the movable block 16 may be no less than the width of the steel roof of corrugated steel web 13, the height of the penetrating portion 14 to facilitate removal of non-interference after forming two The corrugated steel web 13 is inserted into the notch of the mold.

In another technical solution, the short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge is provided with a restriction on a side surface of the fixed end mold 1 facing away from the corrugated steel web 13 The limiting device 35 of the maximum moving distance of the movable block 16 is as shown in FIG. 5. When the movable block 16 is in contact with the limiting device 35, it forms a non-interference with the corrugated steel web 13 into the mold. gap. The setting of the limiting device 35 prevents the movable block 16 from being detached from the fixed end mold 1, avoiding the problem that the artificially powered excess movable block 16 is difficult to reset.

In another technical solution, as shown in FIGS. 5-6, the limiting device 35 includes a 推-shaped push-pull frame 17, and the push-pull frame 17 includes a pair of side plates 36 vertically connected to the fixed end die 1. And the connecting plate 37 connecting the two ends to form a dome-shaped structure surrounding the notch, increasing the contact area of the connecting plate 37 with the movable block 16, and reducing the risk of the movable block 16 being separated from the fixed end mold 1. a pair of the side plates 36 are symmetrically disposed on two sides of one of the movable blocks 16 and are not in contact with each other, and the contact area of the movable block 16 and the pair of side plates 36 is 0, thereby avoiding the movable block 16 and The possibility of friction of the pair of side panels 36 better protects the performance of the movable block 16.

In another technical solution, as shown in FIGS. 5-6, the short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge, the limiting device 35 further comprising a connecting plate disposed on the connecting plate The center hand crank gear 18 of the center 37, the hand crank gear 18 rotates under artificial power, but the spatial orientation does not change, and the movable block 16 extends away from the side surface of the corrugated steel web 13 a vertical toothed rod 19 that meshes with the hand crank gear 18 after passing through the connecting plate 37, the hand crank gear 18 is rotated, and the hand crank gear 18 is toothed The rod 19 is engaged and the toothed rod 19 is moved away from the section 10 to be poured away from the corrugated steel web combination box beam, thereby causing the movable block 16 to move. The simple lead screw engages with the lead screw nut to convert the rotary motion into a linear motion, using labor rather than electromechanical power, which greatly reduces operating costs.

In another technical solution, as shown in FIGS. 7-10, the short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge is provided with three-way alignment on the main beam of the outer mold 3. The device 38 solves the problem that the corrugated steel web 13 is connected to the top rebar cage 45 and the bottom rebar cage 46, and the three-way adjustment device 38 includes at least one three-way jack 20 for laterally bidirectional The longitudinal three-way adjustment, the steel pedestal 21 of the three-way jack 20 is mounted on one side main beam of the outer mold 3, and the magnetic base 23 of the top jack 22 is adsorbed on one side of the corrugated steel web 13 On the surface, the position of the magnetic base 23 is adjusted by pushing a plurality of jacks in the two-way direction and the top jack 22 in the longitudinal direction, thereby adjusting the air posture of the corrugated steel web 13.

In another technical solution, as shown in FIG. 8, the short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge, the three-way positioning device 38 includes three three-way jacks 20, The three magnetic bases 23 increase the combined area with the corrugated steel webs 13, distributed on at least two main beams on one side of the outer mold 3, in one plane The position of the upper corrugated steel web 13 is not concentrated on one main beam, thereby avoiding adjustment in a straight line, balancing the running cost and quantity arrangement of the three-way jack 20 to achieve precise positioning.

In another technical solution, as shown in FIG. 1 and FIG. 11, the short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge, wherein the inner beam of the inner mold 5 is provided with corrugated steel a web positioning device 39, the corrugated steel web positioning device 39 includes at least one pair of support screws 24 and at least one pair of positioning screws 50, one end of the support screw 24 is mounted on the inner mold bracket 6, The other end is mounted on the main beam of the inner mold 5, one end of the positioning screw 50 is mounted on the main beam of the inner mold 5, and the other end abuts on the other side of the corrugated steel web 13 On the surface, it is ensured that the corrugated steel web 13 does not undergo displacement during concrete pouring. The support screw 24 comprises five pairs, respectively, a central section of the roof panel, a thick section of the roof panel, an upper and lower portion 15 of the frame beam of the web section, and two pairs of positioning screws 50, one end of which is pinned to the frame beam and the other end of which is corrugated steel belly. The upper and lower portions 15 of the plate 13 abut. In the implementation, the support screw 24 is first operated to complete the positioning of the inner membrane panel and the frame beam. After the waveform steel web 13 is adjusted, the positioning screw 50 is operated to complete the positioning of the corrugated steel web 13 .

In another technical solution, as shown in FIGS. 12-13, the short-line matching pre-formed template system for a corrugated steel web composite structural beam bridge, the outer mold 3 passing the upper outer corner mold 25 and the waveform One side of the steel top plate of the steel web 13 abuts, and the inner mold 5 abuts against the other side of the steel top plate of the corrugated steel web 13 through the upper inner corner die 26, thereby avoiding the mistake of the concrete pouring process. The hinge portion of the die 3, the corner of the inner mold 5 is wetted or even blocked, and the top steel cage 45 is better formed during the concrete pouring process, and the upper outer corner mold 25 and the upper inner corner mold 26 are respectively passed. The disassembled steel-mixed joint sealing device 27 seals and fixes the corrugated steel web 13 and is disposed in the steel-mixed joint zone to prevent dripping onto the inner mold 5, the outer mold 3 and the corrugated steel web 13 during the pouring process, steel The hybrid joint sealing device 27 can be a flexible or rigid conventional unconventional sealing device such as a closure strip, a rubber ring, a sponge tissue or the like.

A steel-mixed joint sealing device for a short-line matching prefabricated formwork system, as shown in Figs. 1 to 2, 12 to 16, which is mounted on the upper outer corner mold 25 of the outer mold 3 or the upper inner corner mold 26 and the waveform of the inner mold 5. The joint of the steel roof of the corrugated steel web 13 of the steel web composite box girder to be poured, comprising:

Abutting lug plate 29, which is fixedly connected to the upper outer corner die 25 or the lower end surface of the upper inner corner die 26, and the buttressing lug plate 29 is provided with at least two first through holes 40, the first The axis of the through hole 40 is parallel to the lower end surface of the upper outer corner mold 25 or the upper inner corner mold 26;

The slurry holder 30 has one end at least two second through holes 41 matched with the buttressing lugs 29, and the other end is provided with a threaded hole 42 and a second through hole 41 and a The first through hole 40 is detachably connected by a connecting member, and the axis of the threaded hole 42 is perpendicular to the lower end surface of the upper outer corner mold 25 or the upper inner corner mold 26;

The bolt 43 and the nut 31 are tightened, and the rod portion of the jacking bolt 43 is screwed into the threaded hole 42 and the nut 31 Threaded connection, the free end of the jacking bolt 43 is provided with an end panel 44;

An ethylene-vinyl acetate copolymer foam surface 32 (hereinafter referred to as EVA foam surface) having a square structure, the upper and lower surfaces of the ethylene-vinyl acetate copolymer bubble surface 32 and the steel top plate of the corrugated steel web 13 respectively The lower surface, the end panel 44 of the jacking bolt 43 abuts, and the left and right sides abut against the outer surface of the upper outer corner mold 25 or the upper inner corner mold 26 and the butt holder 30, respectively.

In the above technical solution, since the outer end portion of the steel top plate 28 of the corrugated steel web 13 abuts on the side of the upper outer corner mold 25 and the upper inner corner mold 26, a gap is formed and an angle of not more than 90° is formed, and the top plate rebar is formed. The cage 45 may drip along the gap during the pouring process on the inner mold 5, the outer mold 3 and the corrugated steel web 13, if a flexible or rigid conventional unconventional seal such as a sealing strip, a rubber ring, a sponge structure or the like is used. The device may make the gap larger and larger. Although the sealing effect can be achieved, the positions of the upper outer corner mold 25, the upper inner corner mold 26 and the steel top plate 28 of the corrugated steel web 13 are relatively offset from the design drawing. The position of the steel-mixed joint sealing device 27 in the present technical solution can effectively seal the gap formed by the short-line matching pre-formed formwork system, and the steel of the upper outer corner mold 25, the upper inner corner mold 26 and the corrugated steel web 13 The top plate 28 is positioned in a limited position. The abutting lug plate 29 is fixedly connected to the upper outer corner die 25 and the upper inner corner die 26. The retaining lug plate 29 and the abutting lug seat 30 are detachably connected (plugged) by a connecting piece, and the abutting ear holder 30 will have an EVA foaming surface 32. In the angle not exceeding 90°, the EVA foam surface 32 is tightened by the cooperation of the tightening bolt 43 and the nut 31, thereby sealing the gap and helping the upper outer corner mold 25, the upper inner corner mold 26 and the corrugated steel web. Limiting and positioning of the steel top plate 28 of 13.

In another technical solution, the steel-mixed joint sealing device for the short-line matching prefabricated formwork system, as shown in FIG. 16, the butt-proof ear plate 29 comprises an integrally formed mutually perpendicular first plate body 51. And a pair of second plate bodies 52, which are welded in parallel to the lower end faces of the upper outer corner mold 25 or the upper inner corner mold 26, thereby increasing the contact area, thereby more tightly joining, a pair of said The second plate body 52 is parallel to each other, and the second plate body 52 defines two first through holes 40. The axis of the first through hole 40 is parallel to the first plate body 51, and the second plate body 52 is The thickness may be smaller than the first plate body 51.

In another technical solution, the steel-mixed joint sealing device for the short-line matching pre-formed formwork system, as shown in FIG. 16, the butt-proof ear holder 30 comprises an integrally formed third plate body which is perpendicular to each other. 53. The fourth plate body 54 and the pair of fifth plate bodies 55, the third plate body 53 and the fourth plate body 54 have an L-shaped structure, and the pair of the fifth plate bodies 55 are parallel to each other. The two right-angled sides of the fifth plate body 55 are respectively fixedly connected to the third plate body 53 and the fourth plate body 54. The fourth plate body 54 is provided with two threaded holes 42 for the threaded holes. The second plate body 55 is provided with two second through holes 41, and the axes of the second through holes 41 and the threaded holes 42 are perpendicular to each other, and both are It is parallel to the third plate 53. The thickness of the third plate 53 may be slightly smaller than the fourth plate The body 54, the first plate body 51 and the third plate body 53 are fastened by a connecting member, the fourth plate body 54, the end plate 44 of the top bolt 43, the upper outer corner die 25 or the inner corner die, the corrugated steel web 13 The steel roof panel 28 limits the block-shaped EVA bubble surface 32 only to the space. As the jacking bolt 43 is tightened, the EVA bubble surface 32 is deformed to form an outer surface that closely fits the angle of not more than 90°. Surface, thus achieving sealing and limit positioning.

In another technical solution, the steel-mixed joint sealing device for the short-line matching pre-formed formwork system, as shown in FIG. 16, the free end of the fifth plate body 55 to the third plate body 53 The distance from the free end of the fourth plate body 54 to the third plate body 53 is distributed, and the second through hole 41 is distributed over the fifth plate body 55 and protrudes from the fourth plate body 54. Partially. The first through hole 40 and the second through hole 41 are prevented from interfering with the fastener pin and the through hole, thereby facilitating manual operation.

The application method of the short-line matching pre-made template system, as shown in Figures 1-16, includes the following steps:

Step 1. Install and debug the fixed end mold 1 and the fixed end mold bracket 2, the outer mold 3 and the outer mold bracket 4, the inner mold 5 and the inner mold support 6, the bottom mold 7 and the bottom mold support 8, and the bottom mold carriage 9, And a hydraulic system, wherein the matching segment 34 is adjusted to a predetermined position by the bottom mold carriage 9, and the outer mold screw 33 is tightened to minimize the gap between the outer mold 3 and the fixed end mold 1 to form a waveform. The space in which the section 10 of the steel web composite box girder is to be poured into the mold;

Step 2, removing the movable block 16, lifting the whole to-be-cast section 10 into the mold, and resetting the movable block 16 to be flush with the fixed end mold 1 in the main beam of the outer mold 3. At least one three-way jack 20 is disposed on the upper portion, and after the mold is inserted into the mold, the magnetic base 23 is activated, and the magnetic base 23 of the top jack 22 is adsorbed on the corrugated steel web 13 to adjust the aerial attitude of the corrugated steel web 13;

Step 3: The inner mold 5 enters, at least one pair of support screws 24 are mounted on the main beam and the inner mold bracket 6 of the inner mold 5, and at least one pair of positioning wires are mounted on the main beam of the inner mold 5 and the corrugated steel web 13 The bar 50 is tightened to fix the corrugated steel web 13 to prevent the positional deviation of the corrugated steel web 13 during the concrete pouring process;

Step 4: Install a steel-mixed joint sealing device 27 on both sides of the steel top plate 28 of the corrugated steel web 13 and the upper outer corner mold 25 of the outer mold 3 and the upper inner corner mold 26 of the inner mold 5 to seal the gap. The bottom concrete 12 and the roof concrete 11 of the corrugated steel web composite box girder to be poured 10 are sequentially poured;

Step 5: After the concrete to be poured reaches the strength, the temporary connection between the to-be-cast section 10 and the matching section 34 is released, and the matching section 34 is removed to the storage area to release the steel-mixed joint. Sealing device 27, the inner mold 5, the outer mold 3;

Step 6. As the new matching segment, the pour-completed segment is repeated, and steps 1 through 5 are repeated to enter the next cycle.

In another technical solution, the short-line matching pre-formed template system is applied due to the corrugated steel web 13 is not stable with the top steel cage 45 and the bottom steel cage 46, and is easy to tilt and shift. After the matching segment 34 of the corrugated steel web composite box girder is located in the first step, the method further includes: in the section 10 to be poured Before loading into the mold, the temporary positioning frame 47 of the corrugated steel web 13 is first installed, as shown in Fig. 17, to temporarily fix the corrugated steel web 13 so as to be relatively stable, and the corrugated steel web 13 is adjusted in the formwork system. After the position is completed and the inner mold 5 is entered, the temporary positioning frame 47 is removed.

In another technical solution, the application method of the short-line matching prefabricated template system is as shown in FIG. 17. The temporary positioning frame 47 includes a cross bar 48 and two diagonal bars 49, and the cross bar 48 The two ends are detachably fixed to the two corrugated steel webs 13, and one end of the diagonal rod 49 is fixed to the middle portion of the cross bar 48, and the other end is detachably fixed to one of the corrugated steel webs 13. Since the two corrugated steel webs 13 are inclined inwardly from top to bottom, the crossbar 48 is provided to maintain the relative positions of the upper ends of the two corrugated steel webs 13, and the two diagonal rods 49 fix the relative positions of the lower ends of the two corrugated steel webs 13. The position forms two stable triangular support structures.

In another technical solution, the method for applying the short-line matching pre-formed template system, in the second step, before injecting a pair of the movable blocks 16, respectively, injecting respectively on the left and right end faces and the lower end faces of the movable block 16 Lubricating oil thereby reduces friction with a pair of side panels 36 or other components.

The number of devices and processing scales described herein are intended to simplify the description of the present invention. Applicability, modifications, and variations of the present invention will be apparent to those skilled in the art.

Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the embodiments, and are fully applicable to various fields suitable for the present invention, and are easily accessible to those skilled in the art. The invention is not limited to the specific details and the details shown and described herein, without departing from the scope of the appended claims.

Claims (16)

1. A short-line matching prefabricated formwork system for corrugated steel web composite structural beam bridge, comprising: fixed end mold and fixed end mold bracket, outer mold and outer mold bracket, inner mold and inner mold bracket, bottom mold and bottom mold bracket a bottom mold trolley, and a hydraulic system, and a matching section of the corrugated steel web composite box girder forms a space for the entire mold to be poured section of the corrugated steel web composite box girder, the corrugated steel web combination box The to-be-cast section of the beam includes a roof reinforcement cage, a floor reinforcement cage, and at least two corrugated steel webs connecting the two, wherein the fixed end mold includes the top reinforcement cage and the bottom reinforcement cage Corresponding upper part and lower part, the upper part is provided with a movable block opposite to the corrugated steel web, and the movable block is movable along the length direction of the beam under power driving, forming a waveform that does not interfere with the waveform The steel web is inserted into the notch of the mold, wherein the movable block has a width not less than a width of the steel top plate of the corrugated steel web, and a height penetrates the upper portion.
2. A short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge according to claim 1, wherein said fixed end mold is provided with a restriction on a side surface facing away from said corrugated steel web A limiting device for moving the maximum moving distance of the block, wherein when the movable block is in contact with the limiting device, a gap is formed which does not interfere with the corrugated steel web into the mold.
3. The short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge according to claim 2, wherein said limiting device comprises a 推-shaped push-pull frame, said push-pull frame comprising a vertical connection to said fixing A pair of side plates of the end mold and a connecting plate connecting the two ends thereof, a pair of the side plates are symmetrically disposed on two sides of one of the movable blocks, and are not in contact with each other.
4. A short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge according to claim 3, wherein said limiting means further comprises a hand crank gear disposed at a center of said connecting plate The movable block extends away from a side surface of the corrugated steel web with a toothed rod perpendicular thereto, and the toothed rod passes through the connecting plate and engages with the hand crank gear, The rotation of the hand crank gear drives the movable block to move.
5. The short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge according to claim 1, wherein the main beam of the outer mold is provided with a three-way positioning device, and the three-way positioning device The utility model comprises at least one three-way jack, wherein the steel pedestal of the three-way jack is mounted on one side main beam of the outer mold, and the magnetic base of the top jack is adsorbed on one side surface of the corrugated steel web.
6. A short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge according to claim 5, wherein said three-way alignment device comprises three three-way jacks, one of said outer molds On at least two main beams on the side.
7. The short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge according to claim 5, wherein the main beam of the inner mold is provided with a corrugated steel web positioning device, and the corrugated steel belly The board positioning device includes at least one pair of supporting screws and at least one pair of positioning screws, one end of the supporting screw is mounted on the inner mold bracket, and the other end is mounted on the main beam of the inner mold, the positioning One end of the lead screw is mounted on the main beam of the inner mold, and the other end abuts on the other side surface of the corrugated steel web.
8. A short-line matching prefabricated formwork system for a corrugated steel web composite structural beam bridge according to claim 1, wherein said outer mold passes through an upper outer corner mold and a side of a steel top plate of said corrugated steel web Abutting, the inner mold abuts against the other side of the steel top plate of the corrugated steel web through the upper inner corner mold, and the upper outer corner mold and the upper inner corner mold are respectively sealed by the detachable steel-mixed joint The device seals and secures the corrugated steel web.
9. A steel-mixed joint sealing device for a short-line matching prefabricated formwork system, which is installed on an upper outer corner mold of an outer mold or an upper inner corner mold of an inner mold and a corrugated steel web of a corrugated steel web composite box girder to be poured The joint of the steel roof is characterized by comprising:

   a stopper plate, which is fixedly connected to the upper outer corner die or the lower end surface of the upper inner corner die, and the piercing ear plate is provided with at least two first through holes, and the axis of the first through hole is parallel a lower end surface of the upper outer corner mold or the upper inner corner mold;

   a slurry stopper seat having one end at least two second through holes matched with the stopper ear plates, and the other end of which is provided with a threaded hole, and the second through hole and one of the first through holes Removably connected by a connecting member, the axis of the threaded hole being perpendicular to a lower end surface of the upper outer corner mold or the upper inner corner mold;

   Jacking the bolt and the nut, the rod portion of the top tightening bolt is screwed into the threaded hole to be screwed with the nut, and the free end of the jacking bolt is provided with an end panel;

   An ethylene-vinyl acetate copolymer foamed surface having a square structure, wherein upper and lower surfaces of the ethylene-vinyl acetate copolymer foam surface are respectively opposite to a lower surface of the steel top plate of the corrugated steel web, and the top bolt The end panels are offset, and the left and right sides respectively abut against the outer surface of the upper outer corner mold or the upper inner corner mold and the butt holder.
10. A steel-and-hybrid joint sealing device for a short-line matching prefabricated formwork system according to claim 9, wherein said butt-proof ear plate comprises an integrally formed mutually perpendicular first plate body and a pair of second plate bodies. The first plate body is welded in parallel to the lower end surface of the upper outer corner die or the upper inner corner die, a pair of the second plate bodies are parallel to each other, and the second plate body is provided with two first through holes, The axis of the first through hole is parallel to the first plate body.
11. A steel-and-hybrid joint sealing device for a short-wire matching pre-formed formwork system according to claim 9, wherein said butt-proof ear holder comprises an integrally formed third plate body, a fourth plate body and a mutually perpendicular to each other. For the fifth plate body, the third plate body and the fourth plate body have an L-shaped structure, a pair of the fifth plate bodies are parallel to each other, and two of the fifth plate bodies are Each of the right-angled edges is fixedly connected to the third plate body and the fourth plate body, and the fourth plate body is provided with two threaded holes, and the threaded holes do not interfere with the fifth plate body. The second plate body is provided with two second through holes, and the axes of the second through holes and the threaded holes are perpendicular to each other and are parallel to the third plate body.
12. The steel-mixed joint sealing device for a short-line matching prefabricated formwork system according to claim 11, wherein a distance from a free end of the fifth plate body to the third plate body is greater than the fourth plate a distance from the free end of the body to the third plate, the second through hole being distributed on a portion of the fifth plate extending from the fourth plate.
13. A method for applying a short-line matching prefabricated template system according to any one of claims 1 to 8, comprising the steps of:

    Step 1. Install and debug the fixed end mold and the fixed end mold bracket, the outer mold and the outer mold bracket, the inner mold and the inner mold bracket, the bottom mold and the bottom mold bracket, the bottom mold trolley, and the hydraulic system, and the bottom mold Adjusting the matching segment to a predetermined position by the trolley, and tightening the outer die screw to form a space for the entire section of the to-be-cast section of the corrugated steel web composite box girder;

    Step 2: removing the movable block, lifting the integral part of the to-be-cast section into the mold, resetting the movable block so as to be flush with the fixed end mold, and setting at least one of three on the main beam of the outer mold To the jack, the magnetic base of the top jack is adsorbed on the corrugated steel web, and the aerial attitude of the corrugated steel web is adjusted;

    Step 3: The inner mold enters, and at least one pair of supporting screws are installed on the main beam and the inner mold bracket of the inner mold, and at least one pair of positioning screws are installed on the main beam and the corrugated steel web of the inner mold, and the top is fixed to be fixed. Corrugated steel web;

    Step 4: Install a steel-mixed joint sealing device on both sides of the steel top plate of the corrugated steel web and the upper outer corner mold of the outer mold and the upper inner corner mold of the inner mold, seal the gap, and sequentially cast the corrugated steel web combination Floor concrete and roof concrete of the box beam to be poured;

    Step 5: After the concrete to be poured reaches the strength, the temporary connection between the section to be poured and the matching section is released, the matching section is removed to the storage area, and the sealing device of the steel-mixed joint is released. The inner mold, the outer mold;

    Step 6. As the new matching segment, the pour-completed segment is repeated, and steps 1 through 5 are repeated to enter the next cycle.
14. The application method of the short-line matching pre-fabricated formwork system according to claim 13, wherein after the matching segment of the corrugated steel web composite box girder is located in the first step, the method further comprises: loading and unloading the to-be-casting section Before the mold, a temporary positioning frame of the corrugated steel web is first installed, and the temporary positioning frame is removed before the corrugated steel web is adjusted in the template system and the inner mold enters.
15. The method for applying a short-line matching prefabricated formwork system according to claim 14, wherein the temporary positioning frame comprises a cross bar and two diagonal bars, and both ends of the cross bar are detachably fixed to the two On the corrugated steel web, one end of the diagonal rod is fixed at a middle portion of the cross rod, and the other end is detachably fixed to one corrugated steel web.
16. The method of applying the short-line matching pre-fabricated formwork system according to claim 13, wherein in the second step, lubricating oil is injected into the left and right end faces and the lower end face of the movable block before starting the movable block.

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