CN208039060U - A kind of steel box arch rib bowstring arch bridge binder steel skeleton external wrapping concrete hangs die body system - Google Patents

Abstract

A steel box arch rib tie rod arch bridge tie beam steel skeleton outsourcing concrete suspension formwork system includes tie beam steel frame, formwork support structure and formwork structure; the two ends of the tie beam steel frame are fixedly connected The cross-section of the bone is rectangular; the template support structure includes pads, upper cross bars, lower cross bars, tie rods and support rods; the pads are arranged on the top of the tie beam steel frame; the upper cross bars are laid on the top of the pad Top; there are two sets of tie rods, respectively connected to the two ends of the upper cross bar; one set of lower cross bars, which are arranged in parallel longitudinally and at intervals below the bottom of the outsourcing concrete to be poured; between the lower cross bar and the bottom of the outsourcing concrete to be poured There is a gap between them; the two sides of the lower crossbar are connected to the upper crossbar through the connecting rods; there is a set of supporting rods, which are laid on the top of the lower crossbar at intervals along the horizontal direction, and between the corresponding connecting rods on both sides. . The utility model solves the technical problem that the traditional steel arch bridge uses scaffolding to pour the tie girder outsourcing concrete, which will affect the navigation.

Description

A steel box arch rib tie bar arch bridge tie girder steel frame outsourcing concrete hanging formwork system

technical field

The utility model relates to a steel box arch rib tie bar arch bridge tie girder steel frame outsourcing concrete hanging formwork system.

Background technique

The main bridge of a certain project spans the Changhu-Shen route. It adopts a down-through non-thrust tie-bar arch bridge. The steel box structure is covered with concrete tie beams and steel box arch ribs. The arch axis adopts a quadratic parabola. The substructure adopts straight piers, and the caps are connected to the bored pile foundation. The bored piles of the whole bridge are designed as end-bearing piles, and due to the busy channel, in order to reduce the impact of bridge construction on navigation, temporary piers are not allowed in the channel. The tie rods of traditional under-supported non-thrust tie rod arch bridges are usually made of steel pipe concrete; this structure has a large amount of steel, and the weight of the components during hoisting requires high hoisting machinery. Navigable disadvantages.

Utility model content

The purpose of the utility model is to provide a steel box arch rib tie rod arch bridge tie beam steel framework outsourcing concrete hanging formwork system, to solve the technical problem that the traditional steel arch bridge uses scaffolding to pour the tie beam outsourcing concrete will affect navigation.

In order to achieve the above object, the utility model adopts the following technical solutions.

A steel box arch rib tie rod arch bridge tie beam steel framework outsourcing concrete suspension formwork system includes a tie beam steel frame, a formwork support structure and a formwork structure; the two ends of the tie beam steel frame are fixedly connected at the arch foot position, and The cross-section of the tie beam steel frame is rectangular; the formwork support structure includes pads, upper crossbars, lower crossbars, tie rods and support rods; there are at least two groups of pads arranged at intervals along the transverse direction On the top of the tie beam steel frame; wherein each group of spacers is arranged at intervals along the longitudinal direction, and the height of each spacer is greater than the thickness of the outsourcing concrete to be poured; there is a group of upper cross bars, which are laid on the spacers of the spacers along the longitudinal parallel interval and the two ends of the upper cross bar respectively exceed the two sides of the outsourcing concrete to be poured; the tie rods have two groups, which are respectively connected to the two ends of the upper cross bar beyond the two sides of the outsourcing concrete to be poured; There is a group of the lower crossbars, which are arranged at intervals in parallel longitudinally under the bottom of the outsourcing concrete to be poured; and there is a distance between the lower crossbars and the bottom of the outsourcing concrete to be poured; the two sides of the lower crossbars are hoisted by tie bars On the upper crossbar; there is a group of the supporting rods, which are laid on the top of the lower crossbar at intervals along the transverse direction and between the corresponding two-side tie rods; the template structure includes a bottom mold and a side mold; the The bottom form is erected on the top of the supporting rod, corresponding to the bottom surface of the outsourcing concrete to be poured; there are two sideforms, which are respectively longitudinally arranged at the positions on both sides of the outsourced concrete to be poured; and the two sideforms are passed through Pull bolt connection.

Preferably, the cross-section of the spacer is in the shape of a door, and is composed of two parallel and spaced vertical plates and a horizontal plate connected between the tops of the two vertical plates.

Preferably, the top of the tie beam steel frame is provided with a top bellows passing through the prestressed steel bar; the top bellows passes through the pad at the position where it meets the pad; the tie beam steel Below the bottom of the bone, there is a bottom corrugated pipe passing through the prestressed reinforcement; the bottom corrugated pipe is arranged correspondingly to the top corrugated pipe.

Preferably, the upper cross bar is made of double I-beams; the lower cross bar is made of double I-beams.

Preferably, the two ends of the lower cross bar respectively exceed the two ends of the upper cross bar, and the length of the protruding part is 80-120 cm.

Preferably, safety guardrails are respectively provided on both sides of a set of lower cross bars, and the space between the safety guardrails and the side molds on the corresponding side forms a working channel; the safety guardrails include vertical bars, top connections Rods and vertical rods; wherein, the vertical rods have a group and are correspondingly connected to the lower horizontal rods; the top connecting rods are connected between the tops of a group of vertical rods; the vertical rods are connected vertically and parallel to a group of vertical rods superior.

Preferably, the bottom mold includes a horizontal back flute and a bottom formwork panel; the horizontal back flute has a group, and is laid on top of a set of supporting rods at intervals along the longitudinal direction; the bottom formwork panel is laid on a set of horizontal back On the flute, corresponding to the position of the bottom surface of the outsourcing concrete to be poured; the side form includes a vertical back flute and a side formwork panel; the vertical back flute has a group of vertical back flutes, which are supported at the ends of a group of horizontal back flutes along the longitudinal parallel interval; The side formwork panels are arranged on the inner side of a group of vertical back corrugations, corresponding to the side positions of the outsourcing concrete to be poured.

Compared with the prior art, the utility model has the following characteristics and beneficial effects.

1. Utilizing the utility model to pour the outsourcing concrete on the hoisted tie beam steel frame, it solves the technical problem that using the traditional scaffolding to pour the outsourcing concrete will affect the navigation under the bridge.

2. In the utility model, a door-shaped spacer is arranged on the top of the tie beam steel frame, which avoids affecting the passing way of the top bellows when the top bellows are subsequently installed.

3. The upper cross bar and the lower cross bar in the utility model are the main force-bearing members, and the upper cross bar and the lower cross bar are made of double I-beams, which effectively ensure the stress on the upper cross bar and the lower cross bar Performance improves the safety of the utility model.

4. The lower cross bar in the utility model is longer than the upper cross bar, and safety protection railings are provided on both sides of the lower cross bar, so that the space between the safety protection railing and the corresponding side formwork forms a working channel for subsequent pouring Outer concrete provides the working surface.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic structural view of a pad in the utility model.

Reference signs: 1- tie beam steel frame, 2- cushion block, 2.1- vertical board, 2.2- horizontal board, 3- upper cross bar, 4- lower cross bar, 5- pull connecting rod, 6- support connecting rod, 7-top corrugated pipe, 8-bottom corrugated pipe, 9-working channel, 10-vertical rod, 11-top connecting rod, 12-pull bolt, 13-longitudinal rod, 14-horizontal back flute, 15-bottom template panel , 16-vertical back flute, 17-side template panels.

Detailed ways

As shown in Fig. 1 and Fig. 2, this steel box arch rib tie bar arch bridge tie girder steel skeleton outsourcing concrete suspension formwork system includes a tie beam steel frame 1, a formwork support structure and a formwork structure; the tie beam steel frame 1 Both ends are fixedly connected at the position of the arch foot, and the cross section of the tie beam steel frame 1 is rectangular; post 6; there are at least two groups of pads 2, which are arranged at intervals along the transverse direction on the top of the tie beam steel frame 1; wherein each group of pads 2 is arranged at intervals along the longitudinal direction, and the height of each pad 2 is greater than that of the outer package to be poured The thickness of the concrete; the upper cross bar 3 has one group, which is laid on the top of the cushion block 2 along the longitudinal parallel interval; and the two ends of the upper cross bar 3 respectively exceed the two sides of the outsourcing concrete to be poured; The two groups are respectively connected to the two ends of the upper crossbar 3 beyond the two sides of the outsourcing concrete to be poured; the lower crossbar 4 has one group, which are arranged in parallel longitudinally and at intervals below the bottom of the outsourced concrete to be poured; and the lower crossbar There is a distance between the rod 4 and the bottom of the outsourcing concrete to be poured; the two sides of the lower cross bar 4 are suspended and connected to the upper cross bar 3 through the connecting rod 5; the supporting rods 6 have a group, which are spaced in parallel in the transverse direction It is laid on the top of the lower cross bar 4, corresponding to the position between the tie rods 5 on both sides; the formwork structure includes a bottom form and a side form; There are two side forms at the position of the bottom surface; the side forms are arranged longitudinally and respectively at the positions on both sides of the outsourcing concrete to be poured; and the two side forms are connected by pull bolts 12 .

In this embodiment, the cross-section of the spacer 2 is door-shaped, and consists of two vertical plates 2.1 arranged in parallel at intervals and a horizontal plate 2.2 connected between the tops of the two vertical plates 2.1.

In this embodiment, the vertical plate 2.1 and the horizontal plate 2.2 of the spacer 2 are integrally formed.

In this embodiment, the space between vertically adjacent pads 2 is 150 cm.

Of course, in other embodiments, the spacing between vertically adjacent pads 2 can also be adjusted according to the length of the tie beam steel frame 1 .

In this embodiment, the connecting rod 5 is made of finished-rolled rebar; the connecting rod 6 is made of I-shaped steel, and the distance between adjacent connecting rods 6 is 40 cm.

Of course, in other embodiments, the support rods 6 can also be made of channel steel or rectangular section steel, and the distance between adjacent support rods 6 can also be determined according to the width of the tie beam steel frame 1 .

In this embodiment, a top corrugated pipe 7 passing through the prestressed steel bar is provided above the top of the tie beam steel frame 1; There is a bottom corrugated pipe 8 passing through the prestressed steel bar under the bottom of the tie beam steel frame 1 ; the bottom corrugated pipe 8 is arranged correspondingly to the top corrugated pipe 7 .

In this embodiment, the upper cross bar 3 is made of a double I-beam; the lower cross bar 4 is made of a double I-beam.

In this embodiment, the two ends of the lower cross bar 4 respectively exceed the two ends of the upper cross bar 3 , and the length of the protruding part may be 80-120 cm.

In this embodiment, safety guardrails are respectively provided on both sides of a set of lower cross bars 4, and the space between the safety guardrails and the side molds on the corresponding side forms a working channel 9; the safety guardrails include vertical Rod 10, top connecting rod 11 and longitudinal rod 13; wherein, vertical rod 10 has a group, correspondingly connected on the lower cross bar 4; Said top connecting rod 11 is connected between the tops of a group of vertical rods 10; said longitudinal rod 13 It is connected to a group of vertical rods 10 vertically and at parallel intervals.

In this embodiment, the bottom mold includes a horizontal back flute 14 and a bottom formwork panel 15; the horizontal back flute 14 has a group, and is laid on top of a group of supporting rods 6 at intervals along the longitudinal direction; the bottom formwork panel 15 is laid on a group of horizontal back flutes 14 corresponding to the bottom surface of the outsourcing concrete to be poured; the side form includes vertical back flutes 16 and side formwork panels 17; the vertical back flutes 16 have a set of vertically parallel and spaced supports At the end of a group of horizontal corrugations 14; the side formwork panels 17 are arranged on the inside of a group of vertical corrugations 16, corresponding to the side positions of the outsourcing concrete to be poured.

In this embodiment, the horizontal back flutes 14 are made of square wood, and the distance between adjacent horizontal back flutes 14 is 20 cm.

Of course, in other embodiments, the horizontal back flute 14 can also be made of square steel pipe or round steel pipe.

Claims (7)

1. A steel box arch rib tie rod arch bridge tie beam steel skeleton outsourcing concrete hanging formwork system, characterized in that: it includes a tie beam steel frame (1), a formwork support structure and a formwork structure; the tie beam steel frame (1 ) are fixedly connected at the position of the arch foot, and the cross-section of the tie beam steel frame (1) is rectangular; (4), tie rods (5) and support rods (6); there are at least two groups of spacers (2), which are arranged at intervals along the transverse direction on the top of the tie beam steel frame (1); each group of spacers (2) Arranged at intervals along the longitudinal direction, and the height of each pad (2) is greater than the thickness of the outsourcing concrete to be poured; there is a group of upper crossbars (3), which are laid on the top of the pads (2) at parallel intervals along the longitudinal direction ; and the two ends of the upper cross bar (3) respectively exceed the two sides of the outsourcing concrete to be poured; the tie rods (5) have two groups, respectively connected to the two ends of the upper cross bar (3) beyond the outsourcing concrete to be poured On the parts outside the two sides; the lower cross bar (4) has a group, arranged in parallel longitudinally and at intervals below the bottom of the outsourcing concrete to be poured; and there is a distance between the lower cross bar (4) and the bottom of the outsourcing concrete to be poured; The two sides of the lower crossbar (4) are hoisted on the upper crossbar (3) through the connecting rods (5); the supporting rods (6) have a group, which are laid on the lower crossbar (4) ) at the top, corresponding to the position between the pull rods (5) on both sides; The formwork structure includes a bottom form and a side form; the bottom form is erected on the top of the supporting rod (6), corresponding to the bottom surface of the outsourcing concrete to be poured; there are two side forms, which are arranged longitudinally on the The positions on both sides of the outsourcing concrete to be poured; and the two side forms are connected by pull bolts (12). 2. The steel box arch rib tie bar arch bridge tie girder steel framework outsourcing concrete hanging formwork system according to claim 1, characterized in that: the cross section of the spacer (2) is in the shape of a door, and it is arranged by two parallel intervals The vertical plate (2.1) and the horizontal plate (2.2) connected between the tops of the two vertical plates (2.1). 3. The steel box arch rib tie-rod arch bridge tie beam steel framework outsourcing concrete hanging formwork system according to claim 2, characterized in that: the top of the tie beam steel frame (1) is provided with a prestressed reinforcement The top corrugated pipe (7); the top corrugated pipe (7) passes through the pad (2) at the position where it meets the pad (2); the bottom of the tie beam steel frame (1) is provided There is a bottom corrugated pipe (8) passing through the prestressed reinforcement; the bottom corrugated pipe (8) is arranged correspondingly to the top corrugated pipe (7). 4. The steel box arch rib tie bar arch bridge tie girder steel framework outsourcing concrete hanging formwork system according to claim 3, characterized in that: the upper cross bar (3) is made of double I-beams; Cross bar (4) is made by double spell I-beam. 5. The steel box arch rib tie bar arch bridge tie girder steel framework outsourcing concrete hanging formwork system according to claim 4, characterized in that: the two ends of the lower cross bar (4) respectively exceed the upper cross bar (3) Both ends, and the length of the excess part is 80~120cm. 6. The steel box arch rib tie bar arch bridge tie girder steel framework outsourcing concrete hanging formwork system according to claim 5, characterized in that safety guardrails are respectively provided on both sides of a group of lower cross bars (4), and The space between the safety fence and the side form on the corresponding side forms a working channel (9); the safety fence includes a vertical rod (10), a top connecting rod (11) and a vertical rod (13); wherein, the vertical There is a group of rods (10) that are correspondingly connected to the lower crossbar (4); the top connecting rod (11) is connected between the tops of a group of vertical rods (10); the vertical rods (13) are vertically and parallel The intervals are connected to one set of vertical bars (10). 7. The steel box arch rib tie bar arch bridge tie girder steel skeleton outsourcing concrete hanging formwork system according to claim 1, characterized in that: the bottom form includes a horizontal back corrugation (14) and a bottom formwork panel (15); The horizontal back corrugated (14) has a group, which is laid on the top of a group of supporting rods (6) at parallel intervals along the longitudinal direction; the bottom template panel (15) is laid on a group of horizontal back corrugated (14), corresponding to the The position of the bottom surface of the pouring outsourcing concrete; the side form includes a vertical back flute (16) and a side formwork panel (17); the vertical back flute (16) has a set of horizontal back flutes ( 14) at the end; the side formwork panel (17) is set to the inner side of a group of vertical back flutes (16), corresponding to the side of the outsourcing concrete to be poured.