Efficient concrete transport cableway bridge system for river-crossing rigid frame bridge construction and construction method

Abstract

The invention discloses an efficient concrete transportation cableway bridge system for river-crossing rigid frame bridge construction and a construction method.The efficient concrete transportation cableway bridge system comprises a first main pier anchor bridge system installed at the top end of a first main pier and a second main pier anchor bridge system installed at the top end of a second box girder # block at the top of a second main pier, and the first main pier and the second main pier are adjacently arranged; a bridge deck system used for arranging concrete pump pipes is connected between the first main anchor bridge system and the second main pier anchor bridge system. A cableway bridge is erected between two main piers to form a concrete transportation platform; the anchorage systems are installed through the main pier platforms, the bearing cable of the cableway bridge penetrates through the anchorage systems on the two main piers to achieve connection and fixation, the bridge deck structure is installed on the bearing cable, and the bridge deck can be directly and horizontally transported to a rigid frame bridge cantilever section by laying pump pipes on the bridge deck. According to the cableway bridge, the transportation efficiency and the safety performance of concrete of the cantilever section of the rigid frame bridge are remarkably improved, and the safety risk of pipe blockage and pipe explosion of the pump pipe is remarkably reduced.

Description

Technical Field

[0001] The invention relates to the technical field of rigid frame bridge construction, in particular to a temporary cableway bridge suitable for concrete transportation of a cross-river rigid frame bridge and a construction method. Background Art

[0002] In the construction of traditional rigid frame bridges, the construction of cast-in-place box girders relies on ground pumps and pump pipes fixed on the piers. This method not only consumes a lot of energy when the lifting height is high, but also has the safety risks of pipe blockage and bursting. In addition, when pouring the upper box girder of the isolated pier in the center of the river, it is limited by transportation conditions and can only be reached by ships. It is impossible to transport a large amount of concrete, which is inefficient and costly. Therefore, it is considered to use the already cast No. 0 segment to build a temporary cableway bridge to facilitate concrete transportation and the passage of daily maintenance personnel. Summary of the invention

[0003] The present invention aims to solve the problems of low concrete transportation efficiency and high safety risks in the prior art, and to provide a concrete horizontal transportation cableway bridge system which is convenient to construct, easy to maintain and can significantly improve construction efficiency.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: an efficient concrete transportation cableway bridge system for the construction of a cross-river rigid frame bridge, including a main pier anchor system 1 installed at the top of a main pier 1 and a main pier anchor system 2 installed at the top of a box girder block 2 at the top of the main pier 2, the main pier 1 and the main pier 2 are arranged adjacent to each other, and a bridge deck system for arranging a concrete pump pipe is connected between the main anchor system 1 and the main pier anchor system 2.

[0005] Preferably, a bracket platform is installed on the pier body at the top of the main pier one, and the main pier anchoring system one is connected to the bracket platform. The bracket platform includes an I-beam six and anchor rods connected to both ends of the I-beam six, and the anchor rods are inserted into the pier body.

[0006] Preferably, the main pier anchoring system includes a rear anchor beam, a front anchor beam, an inclined rod, a cross beam, a working platform, a steering and rope anchoring system and a pulley group anchoring rope. The rear anchor beam and the front anchor beam are respectively installed at the two ends of the bracket platform, the inclined rod connects the front anchor beam and the rear anchor beam to form an isosceles trapezoidal frame structure, the cross beam is arranged on the outside of the bracket platform, the front anchor beam is located between the cross beam and the rear anchor beam, the steering and rope anchoring system includes a pulley slidably arranged on the cross beam and a six-wheel pulley group connected to the rear anchor beam and the front anchor beam respectively through a jack rope and a pulley group anchoring rope, the six-wheel pulley group includes pulleys at both ends and steel ropes connecting the pulleys at both ends, the pulley is connected to the load-bearing cable in the bridge deck system, and the working platform is arranged on the cross beam and the top of the front anchor beam.

[0007] Preferably, the rear anchor beam comprises an I-beam 1, an arc steel plate, a limiting steel plate, a stiffening plate 1 and a stiffening plate 2. A plurality of I-beams 1 are horizontally stacked and fixed on the bracket platform. A stiffening plate 1 is installed on the inner side of the I-beam 1 located at the top. Stiffening plate 1 is located at the connecting section between the I-beam 1, the diagonal rod and the pier body. The relative outer walls of the I-beam 1 are fixedly connected to the arc steel plate. A limiting steel plate is fixed on the outer wall of the arc steel plate. The movable end of the lifting rope is mounted on and anchored on the arc steel plate. A stiffening plate 2 is connected between the side wall of the limiting steel plate away from the lifting rope and the arc steel plate.

[0008] Preferably, a filling concrete grouting material is provided between the arc-shaped steel plate and the I-beam 1, and a wedge-shaped pad 1 is provided between the I-beam 1 and the pier body, and the inclined surface of the wedge-shaped pad 1 is in contact with the side wall of the pier body.

[0009] Preferably, the working platform comprises a steel mesh and a distribution beam, the distribution beam is arranged horizontally perpendicular to the cross beam and is equidistantly distributed along the cross beam, the steel mesh is arranged on top of the distribution beam, and the bridge deck system is connected to the working platform.

[0010] Preferably, the main anchoring system 2 includes load-bearing beams, vertical poles, anchoring beams, diagonal poles, anchoring steel rods and anchoring steel boxes. The load-bearing beams, vertical poles, anchoring beams and diagonal poles are welded to form a truss structure. The load-bearing cables of the bridge deck system are anchored on the anchoring beams. The anchoring steel rods are pre-buried at the top of the box beam block 2. The anchoring steel box is mounted on the anchoring steel rods, and the anchoring steel box is welded at the angle between the vertical poles and the anchoring beams.

[0011] Preferably, the anchoring crossbeam comprises a horizontally stacked I-beam five and an arc-shaped steel plate two fixed to the opposite side walls of the I-beam five, and concrete grouting material is arranged between the I-beam five and the arc-shaped steel plate two; The load-bearing beam comprises an I-beam 4, a stiffening plate 5, a limit baffle and an arc-shaped steel plate 1, the arc-shaped steel plate 1 is fixed on the top of the I-beam 4, the limit baffle is vertically connected to the two ends of the arc-shaped steel plate 1, the stiffening plate 5 is fixed on the inner side of the I-beam 4, the stiffening plate 5 is located directly below the arc-shaped steel plate 1, and the load-bearing cable is located on the top of the arc-shaped steel plate 1; The anchoring steel box includes an anchoring bottom plate, side plates, a stiffening plate six, a rear panel, an anchoring top plate and a front panel. The side panels are vertically fixed on both sides of the anchoring bottom plate, the front panel is fixed on one end of the side plates, the rear panel is fixed on the middle of the side plates, and the other end of the side plates is connected to the anchoring top plate. The anchoring bottom plate and the anchoring top plate are both provided with openings for the anchoring steel rods to pass through.

[0012] Preferably, the bridge deck system includes load-bearing cables, main crossbeams, secondary crossbeams, steel mesh panels, railings, handrails, guardrail nets and U-shaped locks. The load-bearing cables are connected between the main pier anchoring system one and the main pier anchoring system two, the load-bearing cables are equidistantly arranged, the channel steels in the main crossbeams are fastened to the load-bearing cables by U-shaped locks, the steel mesh panels are installed on the main crossbeams, the secondary crossbeams are arranged at the bottom of the steel mesh panels and are equidistantly arranged along the length direction, the guardrails are vertically fixed at both ends of the main crossbeam, and the handrails and guardrail nets are arranged between adjacent guardrails.

[0013] A construction method of an efficient concrete transport cableway bridge system for cross-river rigid frame bridge construction comprises the following steps: Step 1: On the pier column of the main pier, first install the rear anchor beam through the bracket platform, then install the front anchor beam, and finally weld the ends of the beams into a whole through the diagonal rods to form the main pier anchor system.

[0014] Step 2: After the box girder block # on the upper part of the main pier 2 is cast and reaches the design strength, the anchor system 2 is installed on the bridge deck on the upper part of the main pier; Step 3: Install the load-bearing cables. The main load-bearing cables of the cableway bridge are four φmm steel wire ropes. The steering and rope anchoring system of the main pier is composed of four sets of six-wheel pulleys of 10 tons. One end of the six-wheel pulley is connected to the special T pulley connected to the load-bearing cable, and the other end is connected to the rear anchor beam of the pier top. The load-bearing cable at the main pier 2 is connected and fixed to the anchor beam through the curved steel plate 1 of the load-bearing beam on the anchoring system 2 of the box beam block #. Step 4: Adjust the installation sag of the load-bearing cable; Step 5: Install the bridge deck system between the two piers; Step six: Install pump pipes and ground pumps. Lay two pump pipes from one main pier. The pump pipes are led to each suspended casting section through the cableway bridge deck system at one main pier, and casting construction is carried out through ground pumps and pump pipes.

[0015] 1. The present invention provides a temporary cableway bridge suitable for transporting concrete for a cross-river rigid frame bridge. The main pier 8 is located in the center of the river, and there is no construction passage at the pier column position to directly reach the construction site of the main pier 8. The pump pipe laid on the temporary cableway bridge can be directly transported horizontally to the suspended casting section, so the transportation efficiency and safety performance of concrete are greatly improved, and the safety risks of blockage and explosion of the pump pipe are significantly reduced.

[0016] 2. After the cableway bridge is put into operation, it can be used as a concrete pump pipe and by daily maintenance personnel, which is convenient for the later repair and maintenance of the pump pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 Schematic diagram of the elevation structure of the cableway bridge on the rigid frame bridge.

[0018] Figure 2 Schematic diagram of the plan structure of the cableway bridge on the rigid frame bridge.

[0019] Figure 3 Schematic diagram of the overall layout of the main pier 7 anchorage system.

[0020] Figure 4 Main pier 7 anchorage system detail Figure 1 .

[0021] Figure 5 Main pier 7 anchorage system detail Figure 1 AA section view.

[0022] Figure 6 Main pier 7 anchorage system detail Figure 1 BB cross-sectional view.

[0023] Figure 7 Main pier 7 anchorage system detail Figure 2 .

[0024] Figure 8 Elevation layout of the installation platform for the anchoring system of the main pier 7.

[0025] Fig. 9 Plan layout of the installation platform for the anchoring system of the main pier 7.

[0026] Fig.10 Schematic diagram of the overall layout of the main pier 8 anchorage system.

[0027] Fig.11 Main pier 8 anchorage system detail Figure 2 .

[0028] Fig.12 Main pier 8 anchorage system detail Figure 2 AA section view.

[0029] Fig.13 Main pier 8 anchorage system detail Figure 2 BB cross-sectional view.

[0030] Fig.14 Main pier 8 anchorage system detail Figure 2 CC cross-sectional view.

[0031] Fig.15 Main pier 8 anchorage system detail Figure 2 DD cross-sectional view.

[0032] Fig.16 Plan layout of the anchor steel box of main pier 8.

[0033] Fig.17 Elevation layout of the anchor steel box of main pier 8.

[0034] Fig.18 Side view of the anchoring steel box of main pier 8.

[0035] Fig.19 Bridge deck structure elevation layout drawing.

[0036] Fig. 20 Bridge deck structure plan layout.

[0037] Figure numerals: 1. Main pier anchoring system one; 2. Main pier anchoring system two; 3. Bridge deck system; 4. Bracket platform; 5. Box girder 0# block one; 6. Box girder 0# block two; 7. Main pier one; 8. Main pier two; 9. Main pier three; 10. Cantilever cast segment.

[0038] 1. Main pier anchorage system 1; 101. Rear anchor beam; 1011. I-beam 1; 1012. Arc steel plate; 1013. Wedge-shaped pad 1; 1014. Limiting steel plate; 1015. Stiffening plate 1; 1016. Stiffening plate 2; 1017. Filling concrete grouting material; 102. Diagonal rod; 103. Crossbeam; 1031. I-beam 2; 1032. Stiffening plate 3; 104. Working platform; 1041. Steel mesh; 1042. Distribution beam; 105. Steering and rope anchoring system; 1051. Pulley; 1052. Six-wheel pulley block; 1053. Shackle; 1054. Lifting rope; 1055. Steel rope; 106. Front anchoring beam; 1061. I-beam three; 1062. Stiffening plate four; 1063. Wedge-shaped pad two; 107. Anchoring rope of pulley block.

[0039] 2. Main pier anchoring system two; 201. Load-bearing beam; 2011. I-beam four; 2012. Stiffener five; 2013. Limit baffle; 2014. Curved steel plate one; 202. Vertical pole; 203. Anchor steel rod; 204. Anchor steel box; 2041. Anchor bottom plate; 2042. Side plate; 2043. Stiffener six; 2044. Rear panel; 2045. Anchor top plate; 2046. Front panel; 205. Anchor crossbeam; 2051. I-beam five; 2052. Curved steel plate two; 2053. Concrete grouting material; 206. Diagonal rod; 207. Connecting longitudinal beam.

[0040] 3. Bridge deck system; 301. Load-bearing cables; 302. Main beam; 3021. Channel steel; 303. Secondary beam; 3031. Square timber; 304. Steel mesh panel; 305. Railing; 3051. Angle steel; 306. Handrail rope; 307. Guardrail protection net; 308. U-shaped lock.

[0041] 4. Bracket platform; 401. I-beam 6; 402. Anchor rod. DETAILED DESCRIPTION

[0042] like Figure 1-20As shown, the present invention provides an efficient concrete transport cableway bridge system for the construction of a cross-river rigid frame bridge, comprising a main pier anchor system 1 installed on the top of a main pier 7 and a main pier anchor system 2 installed on the top of a box girder 0# block 26 at the top of a main pier 28. The main pier 17 is arranged adjacent to the main pier 28, and a bridge deck system 3 for arranging a concrete pump pipe is connected between the main anchor system 1 and the main pier anchor system 2.

[0043] like Figure 3 , Figure 5 and Figure 6 A bracket platform 4 is installed on the pier body at the top of the main pier 7, and the main pier anchor system 1 is connected to the bracket platform 4. The bracket platform 4 includes an I-beam 6 401 and anchor rods 402 connected to both ends of the I-beam 6 401, and the anchor rods 402 are inserted into the pier body.

[0044] Utilizing the support platform 4 erected during the construction of the early box girder 0# block 5, the rear anchor beam 101 is arranged on the pier support platform 4 outside the main pier 7 with a small pile number, and the front anchor beam 106 is arranged on the pier support platform 4 inside the main pier 7 with a large pile number. The rear anchor beam 101 and the front anchor beam 106 are welded together by means of a diagonal rod 102 to form a whole. The uneven parts where the rear anchor beam 101 and the front anchor beam 106 contact the pier column are leveled with wedge-shaped pads 1013, and the cross beam 103 is arranged on the pier support platform 4 outside the main pier 7 with a large pile number.

[0045] like Figure 2 , Figure 3 , Figure 4 and Figure 7 The main pier anchoring system 1 includes a rear anchoring beam 101, a front anchoring beam 106, an inclined rod 102, a cross beam 103, a work platform 104, a steering and rope anchoring system 105 and a pulley group anchoring rope 107. The rear anchoring beam 101 and the front anchoring beam 106 are respectively installed at both ends of the bracket platform 4. The inclined rod 102 connects the front anchoring beam 101 and the rear anchoring beam 106 to form an isosceles trapezoidal frame structure. The cross beam 103 is arranged on the outside of the bracket platform 4. The front anchoring beam 106 is located between the cross beam 103 and the rear anchoring beam 106. The steering and rope anchoring system 105 comprises a pulley 1051 slidingly arranged on the cross beam 103 and a six-wheel pulley group 1052 connected to the rear anchor beam 101 and the front anchor beam 106 respectively through a jack rope 1054 and a pulley group anchor rope 107. The six-wheel pulley group 1052 comprises pulleys at both ends and a steel rope 1055 connecting the pulleys at both ends. The pulley 1051 is connected to the load-bearing cable 301 in the bridge deck system 3. The working platform 104 is arranged on the top of the cross beam 103 and the front anchor beam 106.

[0046] The steering and rope anchoring system 105 is movable, so as to facilitate the adjustment of the sag of the bridge deck system 1. The load-bearing cable 301 provides support for the entire bridge deck system 3. The rear anchoring beam 101 of the main pier 1 7 is used to fix one end of the load-bearing cable 301, and the anchoring beam of the main pier 2 8 is used to fix the other end of the load-bearing cable 301. The steering and rope anchoring system 105 is used for the movable support of the load-bearing cable 301.

[0047] The rear anchor beam 101 is made of 4 I56b I-beams 1011 welded together, and is welded and reinforced by a 2 cm thick stiffening plate 1015 at the stress concentration position; a 4 cm thick limiting steel plate 1014 for blocking the movement of the jack rope 1054 is welded on the upper part of the I-beam 1011 at the anchor point position, and the limiting steel plate 1014 is reinforced with a 2 cm stiffening plate 1016, and 2 cm thick arc steel plates 1012 are welded on both sides of the I-beam 1011 at the anchor point position, and the interior of the arc steel plates 1012 is filled with concrete grouting material 1017; the arc steel plates 1012 disperse the force bearing area after the jack rope 1054 is anchored, reduce the stress concentration of the jack rope 1054, and reduce the adverse effects on the anchoring structure; filling the concrete grouting material 1017 can strengthen the strength of the arc steel plate 1012. The notches and pre-buried precision-rolled threaded steel connectors are reserved during the early construction of the pier column. The bracket platform 4 is formed by embedding the bracket legs composed of double-pieced I40b I-beams 401 into the notches and connecting and fixing the anchor rods 402 with the precision-rolled threaded steel connectors to form a whole.

[0048] The steering and rope anchoring system 105 consists of four sets of 100-ton six-wheel pulley blocks 1052. One end of the pulley block 1052 is connected to a 100-ton special pulley 1051 connected to the load-bearing cable 301, and the other end is connected to the rear anchor beam 101 at the pier top.

[0049] Specifically, four sets of 100-ton six-wheel pulley groups 1052 are directly connected by a Ф24mm steel rope 1055, and two 100-ton special pulleys 1051 are connected by two steel plates with a size of 154cm×24cm×2cm through bolts, and the two special pulleys 1051 are fixed on both sides by a Ф24mm pulley group anchor rope 108, and the other end of the pulley group 1052 is fixed to the rear anchor beam 101 by a Ф56mm jack rope 1054.

[0050] The rear anchor beam 101 includes an I-beam 1011, an arc steel plate 1012, a limiting steel plate 1014, a stiffening plate 1015 and a stiffening plate 2 1016. A plurality of I-beams 1011 are horizontally stacked and fixed on the bracket platform 401. A stiffening plate 1015 is installed on the inner side of the I-beam 1011 located at the top. The stiffening plate 1015 is located at the connecting section between the I-beam 1011, the diagonal rod 102 and the pier body. The relative outer side walls of the I-beam 1011 are fixedly connected to the arc steel plate 1012. The limiting steel plate 1014 is fixed on the outer side wall of the arc steel plate 1012. The movable end of the lifting rope 1054 is mounted on and anchored on the arc steel plate 1012. The stiffening plate 2 1016 is connected between the side wall of the limiting steel plate 1014 away from the lifting rope 1054 and the arc steel plate 1012.

[0051] A filling concrete grouting material 1017 is arranged between the arc steel plate 1012 and the I-beam 1011, and a wedge-shaped pad 1013 is arranged between the I-beam 1011 and the pier body, and the inclined surface of the wedge-shaped pad 1013 is in contact with the side wall of the pier body.

[0052] The working platform 104 includes a steel mesh 1041 and a distribution beam 1042 . The distribution beam 1042 is arranged horizontally perpendicular to the cross beam 103 and is evenly distributed along the cross beam 103 . The steel mesh 1041 is arranged on the top of the distribution beam 1042 . The bridge deck system 3 is connected to the working platform 104 .

[0053] The work platform 104 is mainly used for installing the load-bearing cable 301, the pulley group 1051 / 1052 and the pump pipe. The distribution beam 1042 of the work platform 104 is 13 16b channel steels, arranged at a 0.5m interval in the transverse direction of the bridge. A steel mesh 1041 with a diameter of 10mm is installed above the distribution beam 1042, and the grid spacing of the steel mesh 1041 is 10cm×10cm. The steel mesh 1041 is welded to the distribution beam 1042.

[0054] like Figure 11-15 The main anchoring system 202 comprises a load-bearing beam 201, a vertical pole 202, an anchoring beam 205, an inclined pole 206, an anchoring steel rod 203 and an anchoring steel box 204. The load-bearing beam 201, the vertical pole 202, the anchoring beam 205 and the inclined pole 206 are welded to form a truss structure. The load-bearing cable 301 of the bridge deck system 3 is anchored on the anchoring beam 205. The anchoring steel rod 203 is pre-embedded at the top of the box beam 0# block 206. The anchoring steel box 204 is sleeved on the anchoring steel rod 203. The anchoring steel box 204 is welded at the angle between the vertical pole 202 and the anchoring beam 205.

[0055] The anchoring cross beam 205 includes a horizontally stacked I-beam 5 2051 and a curved steel plate 2052 fixed to the opposite side wall of the I-beam 5 2051, and a concrete grouting material 2053 is arranged between the I-beam 5 2051 and the curved steel plate 2052; The load-bearing beam 201 includes an I-beam 4 2011, a stiffening plate 5 2012, a limit baffle 2013 and an arc-shaped steel plate 1 2014. The arc-shaped steel plate 1 2014 is fixed on the top of the I-beam 4 2011. The limit baffle 2013 is vertically connected to the two ends of the arc-shaped steel plate 1 2014. The stiffening plate 5 2012 is fixed on the inner side of the I-beam 4 2011. The stiffening plate 5 2012 is located directly below the arc-shaped steel plate 1 2014. The load-bearing cable 301 is located on the top of the arc-shaped steel plate 1 2014.

[0056] An arc-shaped steel plate 2014 and a limit plate 2013 are installed on the upper part of the load-bearing beam 201 for the transition section of the load-bearing cable 301. The load-bearing cable 301 is reinforced by welding stiffening plates 2012 on both sides of the stress concentration part of the load-bearing beam 201. The anchoring beam 205 serves as the anchoring point of the load-bearing cable 301. An arc-shaped steel plate 2052 is welded on both sides of the anchoring point of the anchoring beam 205. Anchoring steel rods 203 and anchoring steel boxes 204 are arranged on both sides of the anchoring beam 205. The load-bearing beam 201, as the transition section of the load-bearing cable 301, can maintain the tension and position of the load-bearing cable 301, so that the load-bearing cable 301 can be kept in a suitable shape and stress state; and the load-bearing beam 201 can help the anchoring beam 205 to disperse and balance the load transmitted by the load-bearing cable 301; the arc-shaped steel plate 2052 of the anchoring beam 205 can evenly disperse the stress generated by the tension of the load-bearing cable 301, increase the contact area with the load-bearing cable 301, and improve the anchoring stability and reliability. The anchoring steel rod 203 bears the tension from the load-bearing cable 301 and plays a key anchoring role. The anchoring steel box 204 provides a stable anchoring point for the anchoring beam 205 to enhance the local bearing capacity.

[0057] Specifically, the load-bearing beam 201 adopts double-piece I56b I-beam 2011, and is welded and reinforced by a 2cm thick stiffening plate 2012 at the stress concentration position, and a 4cm thick limit steel plate 2013 is welded on the upper position of the I-beam 2011 to block the movement of the load-bearing cable 301; the anchoring crossbeam 205 adopts 4-piece I56b I-beam 2051, and 2cm thick arc steel plates 2052 are welded on both sides of the I-beam 2051 at the anchor point position, and the arc steel plates 2052 are filled with concrete grouting material 2053; the arc steel plates 2052 disperse the load-bearing The force-bearing area of ​​cable 301 after anchoring can reduce the stress concentration of load-bearing cable 301 and reduce the adverse effects on the anchoring structure; filling concrete grouting material 2053 can strengthen the strength of arc steel plate 2052; vertical pole 202 and diagonal pole 206 adopt I56b I-beam, which is welded with load-bearing beam 201 and anchoring beam 205 to form a truss structure; anchoring steel rod 203 adopts 4 pieces with diameter of Ф140mm, which are embedded in the construction process of box beam 0# block 6; anchoring steel box 204 is made of Q235 steel plate with a thickness of 2cm and is processed and formed on site.

[0058] like Fig.16 , 17 As shown in Figure 18, the anchoring steel box 204 includes an anchoring base plate 2041, a side plate 2042, a stiffening plate 6 2043, a rear panel 2044, an anchoring top plate 2045 and a front panel 2046. The side plates 2042 are vertically fixed on both sides of the anchoring base plate 2041, the front panel 2046 is fixed on one end of the side plate 2042, the rear panel 2044 is fixed on the middle of the side plate 2042, and the other end of the side plate 2042 is connected to the anchoring top plate 2045. The anchoring base plate 2041 and the anchoring top plate 2045 are both provided with openings for the anchoring steel rod 203 to pass through.

[0059] The anchoring steel box includes an anchoring bottom plate 2041, a side plate 2042, a stiffening plate 2043, a rear panel 2044, an anchoring top plate 2045 and a front panel 2046, which are formed by assembly and welding on site and serve as a connecting medium between the anchoring beam 205 and the anchoring steel rod 203, providing a stable anchoring point and enhancing the local bearing capacity.

[0060] Specifically, the anchoring bottom plate 2041 of the anchoring steel box 204 is made of a 2 cm thick Q235 steel plate (length × width: 99 cm × 44 cm), and a 160 mm round hole is pre-punched at the center point of one side of the anchoring bottom plate 2041 for passing the anchoring steel rod 203; similarly, the anchoring top plate 2045 is made of a 2 cm thick Q235 steel plate (length × width: 36 cm × 26 cm), and a 160 mm round hole is pre-punched at the center position of the anchoring bottom plate 2045 for passing the anchoring steel rod 203; The side panel 2042 is made of 2cm thick Q235 steel plate (length × width: 98cm × 60cm); the front panel 2046 of the anchor steel box 204 is made of 2cm thick Q235 steel plate (length × width: 70cm × 44cm); the rear panel 2044 of the anchor steel box 204 is made of 2cm thick Q235 steel plate (length × width: 40cm × 30cm); the anchor steel box 204 has two additional stiffening plates 2043 inside, which are made of 2cm thick Q235 steel plate (length × width: 60cm × 60cm) like Fig.19 and Fig. 20 The bridge deck system 3 includes a load-bearing cable 301, a main beam 302, a secondary beam 303, a steel mesh panel 304, a railing 305, a handrail 306, a guardrail net 307 and a U-shaped lock 308. The load-bearing cable 301 is connected between the main pier anchoring system 1 and the main pier anchoring system 2, and the load-bearing cable 301 is arranged at equal intervals. The channel steel 3021 in the main beam 302 is buckled on the load-bearing cable 301 through the U-shaped lock 308. The steel mesh panel 304 is installed on the main beam 302. The secondary beam 303 is arranged at the bottom of the steel mesh panel 304 and is arranged at equal intervals along the length direction. The guardrail 305 is vertically fixed at both ends of the main beam 302. The handrail 306 and the guardrail net 307 are arranged between adjacent guardrails 305.

[0061] The walking operation platform composed of the main cross beam 302, the secondary cross beam 303 and the steel mesh panel 304 is used for fixing the pump pipe and for the passage of personnel for maintenance. Through the above structure, during the construction of the rigid frame bridge, the installation of the cableway bridge can provide transportation efficiency and safety performance for horizontal transportation of concrete to the suspended cast-in-place segment 10.

[0062] The main crossbeam 302 , the secondary crossbeam 303 , the steel mesh panel 304 and the handrail 305 are combined by binding to form an integral bridge panel, which is then hoisted onto the load-bearing cable 301 by a tower crane for installation. The load-bearing cable 301 and the main crossbeam 302 are fixed by U-shaped buckles 308 , and the handrails 305 are connected in series by handrail ropes 306 , and the guardrail protection net 307 serves as a protection net for the handrail 305 .

[0063] Specifically, the bridge deck is prefabricated and assembled before being hoisted onto the load-bearing cable 301. The main beam channel steel 3021, square timber 3031 and steel mesh panel 304 are installed and tied on the platform according to the spacing of the design drawings. The channel steel 3021 and square timber 3031 are connected to the steel mesh panel 304 by welding and wire tying. After the connection is completed, they are hoisted onto the load-bearing cable 301 for installation.

[0064] The cableway bridge uses 4 load-bearing cables 301 with a diameter of 56 mm. The load-bearing cables 301 are divided into two groups, with a spacing of 77 cm between two load-bearing cables 301 in each group, and a spacing of 17 cm between each group. The main crossbeam 302 of the bridge deck uses 16b channel steel 3021, which is fixed to the load-bearing cables 301 by U-shaped buckles 308, and the channel steel 3021 is welded to the steel mesh panel 304; the secondary crossbeam 302 uses 10cm×5cm square wood 3031, which is tied and fixed to the load-bearing cables 301 and the steel mesh panel 304 by 8# iron wire. The spacing between the channel steels 3021 is 3m, and 6 square woods 3031 are arranged at equal intervals between the channel steels 3021. The guardrails 305 on both sides are 6m apart and connected to the main beam channel steel 3021 by welding. The guardrails 305 use 50mm×5mm equal-leg angle steel 3051, and the height is not less than 1.2m. At the same time, two Ф10mm handrail ropes 306 are set on both sides of the guardrails, and finally a Ф10mm steel mesh panel 304 is laid on the secondary beam 302. The grid spacing of the steel mesh 304 is 10cm×10cm. After the handrail rope 306 and the guardrail 305 are installed, a dense guardrail protection net 307 with a height of 1.2 meters and a hole spacing of 6cm is installed on the guardrails on both sides. The guardrail protection net 307 and the handrail rope 306 are connected by wire binding.

[0065] A construction method of an efficient concrete transport cableway bridge system for cross-river rigid frame bridge construction comprises the following steps: Step 1: On the 70% pier column of the main pier, first install the rear anchor beam 101 through the bracket platform 4, then install the front anchor beam 106, and finally weld them into a whole at the ends through the inclined rod 102 to form the main pier anchor system 1.

[0066] Step 2: After the box girder 0# block 6 on the upper part of the main pier 2 8 is cast and reaches the design strength, the anchor system 2 2 is installed on the bridge deck on the upper part of the main pier; Step 3, install the load-bearing cable 301. The main load-bearing cable 301 of the cableway bridge adopts four φ56mm steel wire ropes; the steering and rope anchoring system 105 at the main pier 17 is composed of four sets of 100-ton six-wheel pulley groups 1052; one end of the six-wheel pulley group 1052 is connected to the special 100T pulley 1051 connected to the load-bearing cable 301, and the other end is connected to the rear anchor beam 101 of the pier top. The load-bearing cable 301 at the main pier 28 is connected and fixed to the anchor beam 205 through the curved steel plate 1 2014 of the upper load-bearing beam 201 of the anchoring system 22 of the box beam 0# block 6; Step 4: Adjust the installation sag of the load-bearing cable 301; Step 5: installing the bridge deck system 3 between the two piers; Step six, install pump pipes and ground pumps, lay two pump pipes from the main pier 7, the pump pipes are led to each suspended casting segment 10 through the cableway bridge deck system 3 at the main pier 7, and the casting construction is carried out through the ground pump and pump pipes.

Claims

1. An efficient concrete transport cableway bridge system for the construction of a cross-river rigid frame bridge, characterized by: The invention comprises a main pier anchor system 1 (1) installed at the top of a main pier 1 (7) and a main pier anchor system 2 (2) installed at the top of a box girder 0# block 2 (6) at the top of a main pier 2 (8). The main pier 1 (7) and the main pier 2 (8) are arranged adjacent to each other, and a bridge deck system (3) for arranging a concrete pump pipe is connected between the main anchor system 1 (1) and the main pier anchor system 2 (2).

2. The high-efficiency concrete transport cableway bridge system for the construction of a cross-river rigid frame bridge as claimed in claim 1, characterized in that: A bracket platform (4) is installed on the pier body at the top of the main pier one (7), and the main pier anchor system one (1) is connected to the bracket platform (4). The bracket platform (4) includes an I-beam six (401) and anchor rods (402) connected to both ends of the I-beam six (401), and the anchor rods (402) are inserted into the pier body.

3. The high-efficiency concrete transport cableway bridge system for the construction of a cross-river rigid frame bridge as claimed in claim 2, characterized in that: The main pier anchoring system (1) comprises a rear anchoring beam (101), a front anchoring beam (106), an inclined rod (102), a cross beam (103), a working platform (104), a steering and rope anchoring system (105) and a pulley assembly anchoring rope (107); the rear anchoring beam (101) and the front anchoring beam (106) are respectively installed at two ends of the bracket platform (4); the inclined rod (102) connects the front anchoring beam (101) and the rear anchoring beam (106) to form an isosceles trapezoidal frame structure; the cross beam (103) is arranged on the outside of the bracket platform (4); the front anchoring beam (106) is located between the cross beam (103) and the rear anchoring beam (106). The steering and rope anchoring system (105) comprises a pulley (1051) slidably arranged on the cross beam (103) and a six-wheel pulley group (1052) connected to the rear anchor beam (101) and the front anchor beam (106) through a jack rope (1054) and a pulley group anchor rope (107), respectively. The six-wheel pulley group (1052) comprises pulleys at both ends and steel ropes (1055) connecting the pulleys at both ends. The pulley (1051) is connected to the load-bearing rope (301) in the bridge deck system (3). The working platform (104) is arranged on the top of the cross beam (103) and the front anchor beam (106).

4. The high-efficiency concrete transport cableway bridge system for the construction of a cross-river rigid frame bridge as claimed in claim 3, characterized in that: The rear anchor beam (101) comprises an I-beam (1011), an arc steel plate (1012), a limit steel plate (1014), a stiffening plate (1015) and a stiffening plate (1016). A plurality of I-beams (1011) are stacked horizontally and fixed on the bracket platform (401). A stiffening plate (1015) is installed on the inner side of the I-beam (1011) at the top. The stiffening plate (1015) is located between the I-beam (1011) and the diagonal rod (1016). 02) and the connecting section of the pier body, the relative outer side walls of the I-beam 1 (1011) are fixedly connected to the arc-shaped steel plate (1012), a limiting steel plate (1014) is fixed on the outer side wall of the arc-shaped steel plate (1012), the movable end of the lifting rope (1054) is sleeved on and anchored on the arc-shaped steel plate (1012), and a stiffening plate 2 (1016) is connected between the side wall of the limiting steel plate (1014) away from the lifting rope (1054) and the arc-shaped steel plate (1012).

5. The high-efficiency concrete transport cableway bridge system for the construction of a cross-river rigid frame bridge as claimed in claim 4, characterized in that: A filling concrete grouting material (1017) is provided between the arc-shaped steel plate (1012) and the I-beam 1 (1011), and a wedge-shaped pad 1 (1013) is provided between the I-beam 1 (1011) and the pier body, and the inclined surface of the wedge-shaped pad 1 (1013) is in contact with the side wall of the pier body.

6. The high-efficiency concrete transport cableway bridge system for the construction of a cross-river rigid frame bridge as claimed in claim 3, characterized in that: The working platform (104) comprises a steel mesh (1041) and a distribution beam (1042); the distribution beam (1042) is arranged horizontally perpendicular to the cross beam (103) and is evenly distributed along the cross beam (103); the steel mesh (1041) is arranged on top of the distribution beam (1042); and the bridge deck system (3) is connected to the working platform (104).

7. The high-efficiency concrete transport cableway bridge system for the construction of a cross-river rigid frame bridge as claimed in claim 1, characterized in that: The main anchoring system 2 (2) comprises a load-bearing beam (201), a vertical pole (202), an anchoring cross beam (205), an inclined rod (206), an anchoring steel rod (203) and an anchoring steel box (204). The load-bearing beam (201), the vertical pole (202), the anchoring cross beam (205) and the inclined rod (206) are welded to form a truss structure. The load-bearing cable (301) of the bridge deck system (3) is anchored on the anchoring cross beam (205). The anchoring steel rod (203) is pre-embedded at the top of the box beam 0# block 2 (6). The anchoring steel box (204) is sleeved on the anchoring steel rod (203). The anchoring steel box (204) is welded at the angle between the vertical pole (202) and the anchoring cross beam (205).

8. The high-efficiency concrete transport cableway bridge system for the construction of a cross-river rigid frame bridge as claimed in claim 7, characterized in that: The anchoring crossbeam (205) comprises a horizontally stacked I-beam five (2051) and an arc-shaped steel plate two (2052) fixed to the opposite side wall of the I-beam five (2051), and a concrete grouting material (2053) is provided between the I-beam five (2051) and the arc-shaped steel plate two (2052); The load-bearing beam (201) comprises an I-beam four (2011), a stiffening plate five (2012), a limit baffle (2013) and an arc-shaped steel plate one (2014); the arc-shaped steel plate one (2014) is fixed to the top of the I-beam four (2011); the limit baffle (2013) is vertically connected to both ends of the arc-shaped steel plate one (2014); the stiffening plate five (2012) is fixed to the inner side of the I-beam four (2011); the stiffening plate five (2012) is located directly below the arc-shaped steel plate one (2014); and the load-bearing cable (301) is located at the top of the arc-shaped steel plate one (2014); The anchoring steel box (204) comprises an anchoring bottom plate (2041), a side plate (2042), a stiffening plate six (2043), a rear panel (2044), an anchoring top plate (2045) and a front panel (2046); the side plates (2042) are vertically fixed on both sides of the anchoring bottom plate (2041); the front panel (2046) is fixed on one end of the side plate (2042); the rear panel (2044) is fixed on the middle of the side plate (2042); the other end of the side plate (2042) is connected to the anchoring top plate (2045); and openings for the anchoring steel rod (203) to pass through are provided on the anchoring bottom plate (2041) and the anchoring top plate (2045).

9. The high-efficiency concrete transport cableway bridge system for the construction of a cross-river rigid frame bridge as claimed in claim 1, characterized in that: The bridge deck system (3) comprises a load-bearing cable (301), a main crossbeam (302), a secondary crossbeam (303), a steel mesh panel (304), a handrail (305), a handrail rope (306), a guardrail protection net (307) and a U-shaped lock (308). The load-bearing cable (301) is connected between the main pier anchoring system 1 (1) and the main pier anchoring system 2 (2). The load-bearing cables (301) are arranged at equal distances. The grooves in the main crossbeam (302) are The steel (3021) is fastened to the load-bearing cable (301) by means of a U-shaped lock (308), the steel mesh panel (304) is installed on the main crossbeam (302), the secondary crossbeam (303) is arranged at the bottom of the steel mesh panel (304) and is equidistantly arranged along the length direction, the guardrail (305) is vertically fixed to both ends of the main crossbeam (302), and the handrail rope (306) and the guardrail protection net (307) are arranged between adjacent guardrails (305).

10. The construction method of the high-efficiency concrete transport cableway bridge system for the construction of a cross-river rigid frame bridge according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: On the pier column of the main pier 1 (7), first install the rear anchor beam (101) through the bracket platform (4), then install the front anchor beam (106), and finally weld them into a whole at the ends through the inclined rod (102), so as to form the main pier anchor system 1 (1). Step 2: After the casting of the box girder block 0# (6) on the upper part of the main pier 2 (8) is completed and reaches the design strength, the anchor system 2 (2) is installed on the bridge deck on the upper part of the main pier; Step 3: Install the load-bearing cable (301). The main load-bearing cable (301) of the cableway bridge adopts four φ56mm steel wire ropes. The steering and rope anchoring system (105) at the main pier 1 (7) is composed of four sets of 100-ton six-wheel pulley groups (1052). One end of the six-wheel pulley group (1052) is connected to the special 100T pulley (1051) connected to the load-bearing cable (301), and the other end is connected to the rear anchor beam (101) at the pier top. The load-bearing cable (301) at the main pier 2 (8) is connected and fixed to the anchoring cross beam (205) through the curved steel plate 1 (2014) of the upper load-bearing beam (201) of the anchoring system 2 (2) of the box beam 0# block (6); Step 4: adjusting the installation verticality of the load-bearing cable (301); Step 5: Install the bridge deck system (3) between the two piers; Step 6: Install the pump pipe and ground pump. Two pump pipes are laid from the main pier 1 (7). The pump pipes are led to each suspended casting segment (10) through the cableway bridge deck system (3) at the main pier 1 (7). The casting construction is carried out through the ground pump and pump pipe.

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