A prefabricated pipe gallery cross-sea bridge

Abstract

A prefabricated pipe gallery sea-crossing bridge comprises a main beam bridge, bridge piers, and bridge pier cap beams. The upper part of the main beam bridge is set as a two-way motor vehicle lane, and also comprises prefabricated pipe gallery bridges located on both sides of the main beam bridge and set along the length of the main beam bridge. The upper part of the pipe gallery bridge is set as a pedestrian / non-motor vehicle lane; the lower part of the pipe gallery bridge is supported on the bridge pier cap beam shared with the main beam bridge, and the pipe gallery bridge is arranged into multiple sections of prefabricated pipe galleries according to the span length along the longitudinal bridge direction. The prefabricated pipe gallery is a simply supported box beam structure, and the interior of the single cabin is a fully through structure. The corridor brackets, piers, pipelines, ventilation and lighting facilities are installed inside the corridor. After various pipelines are integrated and installed in each section of the prefabricated pipe gallery, the pipeline interfaces between adjacent prefabricated pipe galleries are spliced ​​on site. The present invention uses the prefabricated pipe gallery to integrate the brackets, piers, pipelines, ventilation and lighting facilities to form a pipe gallery bridge, and implements the cross-sea installation synchronously with the main beam bridge, which is more space-intensive, the pipeline is not exposed as a whole, is not easy to corrode, and is convenient for maintenance.

Description

Technical Field

[0001] The invention relates to a bridge manufacturing technology, belonging to the technical field of bridge structure construction, and specifically provides a prefabricated pipe gallery sea-crossing bridge. Background Art

[0002] Conventional pipeline corridors are generally buried below the ground. The structure itself is a reinforced concrete structure. Most of them use on-site steel bar tying and on-site pouring, so the whole does not need to bear too much tensile stress.

[0003] At present, when crossing the sea, pipelines of sea-crossing bridges are equipped with pipeline protection structures separately, or cross the bridge by hanging brackets, etc., and the pipelines are exposed as a whole, easy to corrode, causing technical problems such as difficult maintenance and difficult management. The present invention proposes to better solve the problems of overall exposure of pipelines, easy corrosion, difficult maintenance and bracket stress by setting a simple pipe gallery bridge structure. Summary of the invention

[0004] The purpose of the present invention is to provide a prefabricated pipe gallery cross-sea bridge, which aims to solve the technical problems of pipelines of the cross-sea bridge being exposed as a whole, easy to corrode, difficult to repair and stress on the bracket when crossing the sea.

[0005] The technical solution of the present invention is as follows:

[0006] A prefabricated pipe gallery sea-crossing bridge, comprising a main beam bridge 1, a bridge pier 51, and a bridge pier cap beam 52, wherein the upper portion of the main beam bridge is arranged as a two-way motor vehicle lane, and further comprising a prefabricated pipe gallery bridge 2 located on both sides of the main beam bridge 1 and arranged along the entire length of the main beam bridge 1, wherein the upper portion of the pipe gallery bridge is arranged as a pedestrian / non-motor vehicle lane 6; a rubber bearing 5 is arranged at the lower portion of the pipe gallery bridge and supported on a bridge pier cap beam 52 shared with the main beam bridge, and a vertical partition wall 53 is arranged on the bridge pier cap beam 52 to limit the bottom of the pipe gallery bridge and the main beam bridge in the transverse direction of the bridge;

[0007] The pipe gallery bridge 2 is arranged along the longitudinal bridge direction to be composed of multiple sections of prefabricated pipe galleries 21 according to the span length, and a transverse bridge structural seam 9 is arranged at the interface between the adjacent prefabricated pipe galleries 21 along the bridge direction, and a longitudinal bridge structural seam 4 with a width of at least 2 cm is arranged between the pipe gallery bridge and the upper part of the side of the main beam bridge;

[0008] The prefabricated pipe gallery 21 is a simply supported box girder structure. The prefabricated pipe gallery adopts a single cabin with a fully through structure. Each span of the prefabricated pipe gallery is provided with a hidden transverse diaphragm 8 at the beam end and the mid-span position, and a top plate 212, a bottom plate 213, and webs 214 on both sides of the facade are cast and prefabricated together with the hidden transverse diaphragm 8; a linear prestressed steel bundle 7 is arranged in the web 214, and the prestressed steel bundles of each adjacent span of the prefabricated pipe gallery are not connected;

[0009] The prefabricated pipe gallery is internally installed with internal supports, piers, pipelines, ventilation and lighting facilities. After various pipelines are integrated and installed in each section of the prefabricated pipe gallery, the pipeline interfaces between adjacent prefabricated pipe galleries 21 are spliced ​​on site.

[0010] The main beam bridge 1 under the carriageway is composed of prefabricated main beams 101 which are arranged into multiple sections according to the span length along the longitudinal bridge direction and arranged in multiple strips along the transverse bridge direction. The prefabricated main beams 101 are conventional simply supported small box beam structures. Adjacent prefabricated main beams 101 are connected as a whole in the transverse bridge direction by conventional cast-in-place wet joints 3; prefabricated main beams 101 with a length of 3-4 spans in the longitudinal bridge direction are a unit, and a carriageway expansion joint 13 is arranged between the units, and the spans outside the carriageway expansion joint 13 are continuous with the bridge deck.

[0011] The top surface of the transverse bridge structural seam 9 is covered with a galvanized steel plate 91, one side of the galvanized steel plate is a fixed end 94 fixedly connected to one end of the prefabricated pipe gallery, and the other side is a lap end 95 overlapped on the adjacent prefabricated pipe gallery to cover the structural seam gap to form a seamless connection, and a molded aluminum ingot rubber compression sealing strip 92 is arranged under the galvanized steel plate to seal the upper opening of the expansion joint. The galvanized steel plate is covered along the entire length of the transverse bridge structural seam 9, and the side gap and the bottom gap at the lower part of the structural seam are not closed, forming the ventilation pores 93 of the pipe gallery.

[0012] The carriageway expansion joint 13 is welded by an expansion joint structural steel plate 133 and embedded steel bars in the prefabricated main beam 101, and an expansion joint concrete filler 132 is poured. An expansion joint rubber belt 134 is arranged between two expansion joint structural steel rails 135, and an expansion joint filler 136 is arranged under the expansion joint rubber belt 134.

[0013] The prefabricated pipe gallery 21 is provided with the concealed transverse beam 8 only within the chamfered range of the pipe gallery box; a portion of the prefabricated pipe gallery 21 has a reserved hoisting opening 11 on the top plate of the pipe gallery, and a reinforced concrete cover plate 12 is provided accordingly.

[0014] The longitudinal length of each section of the prefabricated pipe gallery is set to one span length.

[0015] The simply supported box girder structure under the sidewalk refers to the prefabricated pipe gallery as the main load-bearing structure, with both ends supported on the rubber bearings 5 ​​respectively, and is a statically determinate structure; only one prefabricated pipe gallery is provided in each span, and the adjacent prefabricated pipe galleries are not connected in the longitudinal direction.

[0016] The simply supported small box girder structure under the carriageway refers to the precast main beam 101 as the main load-bearing structure, with both ends supported on the rubber bearings 5 ​​respectively, and there is no connection between the adjacent precast main beams 101 in the longitudinal direction; the bridge deck continuity refers to the concrete pavement layer laid on the precast main beam 101 is not separated at the bridge piers, connecting the adjacent precast main beams 101 bridge decks into an integral bridge deck structure.

[0017] The technical features of the technical solution of the present invention are as follows:

[0018] 1. The pipe gallery and main beam adopt the simple supported beam system, which realizes the synchronous overall span of the pipe gallery and the bridge. The main beam in the transverse direction of the bridge adopts the conventional cast-in-place wet joint connection, and a 2 cm wide structural joint is set between the main beam and the pipe gallery (the upper part is not connected); rubber bearings are set at the bottom of the pipe gallery and the main beam along the bridge and connected to the same pier (the lower part has a common foundation), and expansion joints are set between adjacent pipe galleries along the bridge.

[0019] 2. The pipe gallery adopts a prefabricated box girder structure. The A and B boxes of the pipe gallery are both single-cabin. When the pipe gallery is prefabricated, the brackets, piers, pipelines and lighting facilities in the gallery are installed. After integrating various pipelines into the prefabricated pipe gallery, the bridge crane is used for overall hoisting, and the pipeline interfaces between adjacent pipe galleries are spliced ​​on site.

[0020] 3. The prefabricated pipe corridor adopts a partition-free design, and hidden cross beams are set at the beam ends and in the middle of the span to better solve the stress problem of the pipe corridor; cross beams are only set within the chamfer range of the box room, so as not to occupy the pipeline passage space.

[0021] 4. The prestressed steel strands are designed in a straight line and are only placed on the lower side of the web ( Figure 5 ), solve the conflict between embedded parts and prestressed steel strands in the bottom plate and upper part of the web of the prefabricated pipe gallery; review the reaction forces of various pipeline supports accordingly, and strengthen the pipe gallery locally according to needs to solve the support force problem,

[0022] 5. Gaps are provided between adjacent prefabricated pipe corridors along the bridge, expansion joints are provided on the top of the gaps, and the sides and bottom of the gaps are not closed to realize the ventilation function of the pipe corridors.

[0023] 6. To facilitate pipeline maintenance or replacement during use, some prefabricated pipe gallery roofs are equipped with reserved lifting openings and corresponding reinforced concrete cover plates.

[0024] 7. Make full use of space. The top plate of the prefabricated pipe gallery is used as a pedestrian path or non-motorized vehicle lane, and the pipelines in the gallery are independent cabins for easy maintenance.

[0025] 8. The overall solution saves space, saves investment, and facilitates pipeline installation and maintenance to achieve the goals of rapid construction and green environmental protection.

[0026] 9. For projects with intensive underground space, dense pipeline networks, and the need for pipeline crossing, this method can be used to achieve pipeline crossing.

[0027] 10. The structure of the pipe gallery bridge can also adopt structural types such as steel structure, and the spanning capacity is also wider.

[0028] Effects of the Invention

[0029] The present invention uses a prefabricated pipe gallery integrated installation structure to form a pipe gallery bridge with brackets, piers, pipelines, ventilation and lighting facilities, and implements cross-sea installation simultaneously with the main beam bridge, which is more space-intensive and saves engineering investment. The pipeline is not exposed as a whole, is not easy to corrode, and is easy to repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is an overall schematic diagram of the sea-crossing bridge of the present invention;

[0031] Figure 2 It is a cross-sectional schematic diagram of the sea-crossing bridge of the present invention;

[0032] Figure 3 It is a schematic diagram of the cross section of the prefabricated pipe gallery A chamber of the present invention;

[0033] Figure 4 It is a schematic cross-sectional view of a box chamber of a prefabricated pipe gallery B of the present invention;

[0034] Figure 5 It is a schematic diagram of tensioning prestressed steel strands on a pedestal for a prefabricated pipe gallery of the present invention;

[0035] Figure 6 This is a schematic diagram of the hidden transverse beam of the prefabricated pipe gallery of the present invention;

[0036] Figure 7 It is a schematic diagram of the transverse structural joint between the prefabricated pipe galleries of the present invention;

[0037] Figure 8 It is a schematic diagram of the transverse expansion joint between the prefabricated main beams under the carriageway of the present invention;

[0038] Fig. 9 A layout diagram of the hoisting openings reserved for the prefabricated pipe gallery of the present invention.

[0039] Explanation of the accompanying figures: main beam bridge 1, prefabricated main beam 101, pipe gallery bridge 2, prefabricated pipe gallery 21, top plate 212, bottom plate 213, web plate 214, cast-in-place wet joint 3, structural joint 4, rubber bearing 5, bridge pier 51, bridge pier cap beam 52, vertical partition wall 53, sidewalk / non-motorized vehicle lane 6, prestressed steel strand 7, hidden transverse partition beam 8, transverse bridge structural joint 9, galvanized steel plate 91, molded aluminum ingot rubber compression sealing strip 92, pipe gallery ventilation pore 93, fixed end 94, lap end 95, pedestal 10, pipe gallery top plate reserved lifting port 11, reinforced concrete cover plate 12, roadway expansion joint 13, asphalt concrete pavement 131, expansion joint concrete filler 132, expansion joint structural steel plate 133, expansion joint rubber belt 134, expansion joint structural rail 135, expansion joint gap filler 136 DETAILED DESCRIPTION

[0040] See also Figure 1-9As shown, a prefabricated pipe gallery sea-crossing bridge of the present invention comprises a main beam bridge 1, a bridge pier 51, and a bridge pier cap beam 52. The upper part of the main beam bridge is set as a two-way motor vehicle lane, and also comprises a prefabricated pipe gallery bridge 2 located on both sides of the main beam bridge 1 and arranged along the length of the main beam bridge 1. The upper part of the pipe gallery bridge is set as a pedestrian / non-motor vehicle lane 6; a rubber bearing 5 is arranged at the lower part of the pipe gallery bridge and supported on the bridge pier cap beam 52 shared with the main beam bridge, and a vertical partition wall 53 is arranged on the bridge pier cap beam 52 to limit the bottom of the pipe gallery bridge and the main beam bridge in the transverse direction of the bridge;

[0041] The pipe gallery bridge 2 is arranged along the longitudinal bridge direction to be composed of multiple sections of prefabricated pipe galleries 21 according to the span length, and a transverse bridge structural seam 9 is arranged at the interface between the adjacent prefabricated pipe galleries 21 along the bridge direction, and a longitudinal bridge structural seam 4 with a width of at least 2 cm is arranged between the pipe gallery bridge and the upper part of the side of the main beam bridge;

[0042] The prefabricated pipe gallery 21 is a simply supported box girder structure. The prefabricated pipe gallery adopts a single cabin with a fully through structure. Each span of the prefabricated pipe gallery is provided with a hidden transverse diaphragm 8 at the beam end and the mid-span position, and a top plate 212, a bottom plate 213, and webs 214 on both sides of the facade are cast and prefabricated together with the hidden transverse diaphragm 8; a linear prestressed steel bundle 7 is arranged in the web 214, and the prestressed steel bundles of each adjacent span of the prefabricated pipe gallery are not connected;

[0043] The prefabricated pipe gallery is internally installed with internal supports, piers, pipelines, ventilation and lighting facilities. After various pipelines are integrated and installed in each section of the prefabricated pipe gallery, the pipeline interfaces between adjacent prefabricated pipe galleries 21 are spliced ​​on site.

[0044] The main beam bridge 1 under the carriageway is composed of prefabricated main beams 101 which are arranged into multiple sections according to the span length along the longitudinal bridge direction and arranged in multiple strips along the transverse bridge direction. The prefabricated main beams 101 are conventional simply supported small box beam structures. Adjacent prefabricated main beams 101 are connected as a whole in the transverse bridge direction by conventional cast-in-place wet joints 3; prefabricated main beams 101 with a length of 3-4 spans in the longitudinal bridge direction are a unit, and a carriageway expansion joint 13 is arranged between the units, and the spans outside the carriageway expansion joint 13 are continuous with the bridge deck.

[0045] The top surface of the transverse bridge structural seam 9 is covered with a galvanized steel plate 91, one side of the galvanized steel plate is a fixed end 94 fixedly connected to one end of the prefabricated pipe gallery, and the other side is a lap end 95 overlapped on the adjacent prefabricated pipe gallery to cover the structural seam gap to form a seamless connection, and a molded aluminum ingot rubber compression sealing strip 92 is arranged under the galvanized steel plate to seal the upper opening of the expansion joint. The galvanized steel plate is covered along the entire length of the transverse bridge structural seam 9, and the side gap and the bottom gap at the lower part of the structural seam are not closed, forming the ventilation pores 93 of the pipe gallery.

[0046] The carriageway expansion joint 13 is welded by an expansion joint structural steel plate 133 and embedded steel bars in the prefabricated main beam 101, and an expansion joint concrete filler 132 is poured. An expansion joint rubber belt 134 is arranged between two expansion joint structural steel rails 135, and an expansion joint filler 136 is arranged under the expansion joint rubber belt 134.

[0047] The prefabricated pipe gallery 21 is provided with the concealed transverse beam 8 only within the chamfered range of the pipe gallery box; a portion of the prefabricated pipe gallery 21 has a reserved hoisting opening 11 on the top plate of the pipe gallery, and a reinforced concrete cover plate 12 is provided accordingly.

[0048] The longitudinal length of each section of the prefabricated pipe gallery is set to one span length.

[0049] The simply supported box girder structure under the sidewalk refers to the prefabricated pipe gallery as the main load-bearing structure, with both ends supported on the rubber bearings 5 ​​respectively, and is a statically determinate structure; only one prefabricated pipe gallery is provided in each span, and the adjacent prefabricated pipe galleries are not connected in the longitudinal direction.

[0050] The simply supported small box girder structure under the carriageway refers to the precast main beam 101 as the main load-bearing structure, with both ends supported on the rubber bearings 5 ​​respectively, and there is no connection between the adjacent precast main beams 101 in the longitudinal direction; the bridge deck continuity refers to the concrete pavement layer laid on the precast main beam 101 is not separated at the bridge piers, connecting the adjacent precast main beams 101 bridge decks into an integral bridge deck structure.

[0051] Example

[0052] See also Figure 1 The present invention provides a prefabricated pipe gallery cross-sea bridge structure, and the specific construction method includes the following steps:

[0053] Step 1: prefabricate the prefabricated main beam 101 and the prefabricated pipe gallery 21 in a prefabrication factory;

[0054] Step 2: tensioning prestress to make the prefabricated main beam and the lower edge of the prefabricated pipe gallery free of tensile stress;

[0055] Step three: After the prefabricated pipe corridor concrete has reached the designed strength, install the supports, piers, pipelines, ventilation and lighting facilities in the corridor (this is a general conventional structure installation and is constructed according to general conventional methods).

[0056] Step 4: hoist the prefabricated main beams and prefabricated pipe gallery into place, and cast the prefabricated main beams in situ with wet joints to form an integral structure;

[0057] Step five: construct expansion joints and structural joints between beams, and construct bridge deck pavement and ancillary facilities.

[0058] In order to facilitate the maintenance or replacement of pipelines during use, some prefabricated pipe gallery roofs are reserved with lifting ports and reinforced concrete cover plates are set accordingly. The present invention makes full use of space. The prefabricated pipe gallery roof is used as a pedestrian path or non-motorized vehicle lane, and the pipelines in the gallery are independently built into cabins for easy maintenance. The overall solution saves space, saves investment, and facilitates pipeline installation and maintenance, so as to achieve the purpose of rapid construction and green environmental protection.

[0059] For projects with intensive underground space, dense pipe networks, and pipeline crossing, the present invention can be used to achieve pipeline crossing. The structure of the pipe gallery bridge of the present invention can also adopt structural types such as steel structure, and the crossing capacity is also wider.

Claims

1. A prefabricated pipe gallery cross-sea bridge, comprising a main beam bridge (1), a bridge pier (51), and a bridge pier cap beam (52), wherein the upper portion of the main beam bridge is arranged as a two-way motor vehicle lane, It is characterized in that It also includes prefabricated pipe gallery bridges (2) located on both sides of the main beam bridge (1) and arranged along the entire length of the main beam bridge (1), the upper part of the pipe gallery bridge being arranged as a pedestrian / non-motorized vehicle lane (6); a rubber bearing (5) is arranged at the lower part of the pipe gallery bridge and supported on a pier cap beam (52) shared with the main beam bridge, and a vertical partition wall (53) is arranged on the pier cap beam (52) to limit the bottom of the pipe gallery bridge and the main beam bridge in the transverse direction; The pipe gallery bridge (2) is arranged in a longitudinal direction according to the span length to form a plurality of prefabricated pipe galleries (21), and a transverse bridge structural seam (9) is arranged at the interface between adjacent prefabricated pipe galleries (21) along the bridge direction, and a longitudinal bridge structural seam (4) with a width of at least 2 centimeters is arranged between the pipe gallery bridge and the upper part of the side surface of the main beam bridge; The prefabricated pipe gallery (21) is a simply supported box beam structure. The prefabricated pipe gallery adopts a single cabin with a fully through structure inside. Each span of the prefabricated pipe gallery is provided with a hidden transverse diaphragm (8) at the beam end and the mid-span position, and a top plate (212), a bottom plate (213), and web plates (214) on both sides of the facade are cast and prefabricated together with the hidden transverse diaphragm (8); a straight prestressed steel bundle (7) is arranged in the web plate (214), and the prestressed steel bundles of adjacent spans of the prefabricated pipe gallery are not connected; The prefabricated pipe gallery is internally installed with internal supports, piers, pipelines, ventilation and lighting facilities. After various pipelines are integrated and installed in each section of the prefabricated pipe gallery, the pipeline interfaces between adjacent prefabricated pipe galleries (21) are spliced ​​on site.

2. A prefabricated pipe gallery cross-sea bridge as claimed in claim 1, It is characterized in that The main beam bridge (1) under the two-way motor vehicle lane is composed of a plurality of prefabricated main beams (101) arranged in a plurality of sections according to the span length along the longitudinal bridge direction and arranged in a plurality of strips along the transverse bridge direction. The prefabricated main beams (101) are conventional simply supported small box beam structures. Adjacent prefabricated main beams (101) are connected in a transverse bridge direction by conventional cast-in-place wet joints (3). Prefabricated main beams (101) with a length of 3-4 spans in the longitudinal bridge direction form a unit, a carriageway expansion joint (13) is arranged between the units, and the spans outside the carriageway expansion joint (13) are continuous with the bridge deck.

3. A prefabricated pipe gallery cross-sea bridge as claimed in claim 1, It is characterized in that The top surface of the transverse structural seam (9) is covered with a galvanized steel plate (91), one side of the galvanized steel plate is a fixed end (94) fixedly connected to one end of the prefabricated pipe gallery, and the other side is a lap end (95) lapped on the adjacent prefabricated pipe gallery to cover the structural seam gap to form a seamless connection. A molded aluminum ingot rubber compression sealing strip (92) is arranged under the galvanized steel plate to seal the upper opening of the transverse structural seam. The galvanized steel plate covers the entire length of the transverse structural seam (9), and the side gap and the bottom gap of the lower part of the structural seam are not closed, forming the ventilation holes (93) of the pipe gallery.

4. A prefabricated pipe gallery cross-sea bridge as claimed in claim 2, It is characterized in that The carriageway expansion joint (13) is welded by an expansion joint structural steel plate (133) and embedded steel bars in a prefabricated main beam (101), and an expansion joint concrete filler (132) is poured. An expansion joint rubber belt (134) is arranged between two expansion joint structural steel rails (135), and an expansion joint inter-seam filler (136) is arranged under the expansion joint rubber belt (134).

5. A prefabricated pipe gallery cross-sea bridge as claimed in claim 1, It is characterized in that The prefabricated pipe gallery (21) is provided with the concealed transverse beam (8) only within the chamfered range of the pipe gallery box; a portion of the prefabricated pipe gallery (21) has a reserved hoisting opening (11) on the pipe gallery top plate, and a reinforced concrete cover plate (12) is provided accordingly.

6. A prefabricated pipe gallery cross-sea bridge as claimed in claim 1, It is characterized in that The longitudinal length of each section of the prefabricated pipe gallery is set to one span length.

7. The prefabricated pipe gallery cross-sea bridge according to claim 1, It is characterized in that The simply supported box girder structure under the sidewalk refers to the prefabricated pipe gallery as the main load-bearing structure, with both ends supported on the rubber bearings (5) respectively, and is a statically determinate structure; only one prefabricated pipe gallery is provided in each span, and the adjacent prefabricated pipe galleries in the longitudinal direction are not connected.

8. A prefabricated pipe gallery cross-sea bridge as claimed in claim 2, It is characterized in that The simply supported small box girder structure under the carriageway refers to the precast main beam (101) as the main load-bearing structure, with both ends supported on the rubber bearings (5) respectively, and no connection between the adjacent precast main beams (101) in the longitudinal direction; the bridge deck continuity refers to the concrete pavement layer laid on the precast main beam (101) not being broken at the bridge piers, connecting the adjacent precast main beams (101) bridge decks into an integral bridge deck structure.

Images