CN115198645A - Two-point floating transportation and integral lifting installation construction method for arch rib - Google Patents
Two-point floating transportation and integral lifting installation construction method for arch rib Download PDFInfo
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- CN115198645A CN115198645A CN202210819969.6A CN202210819969A CN115198645A CN 115198645 A CN115198645 A CN 115198645A CN 202210819969 A CN202210819969 A CN 202210819969A CN 115198645 A CN115198645 A CN 115198645A
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- 238000010276 construction Methods 0.000 title claims abstract description 43
- 238000009434 installation Methods 0.000 title claims abstract description 39
- 238000007667 floating Methods 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 38
- 239000010959 steel Substances 0.000 claims description 38
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000011549 displacement method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a construction method for two-point floating transportation and integral lifting installation of arch ribs, which is characterized in that the arch ribs are integrally assembled on the shore by adopting a support method, the two ends of the arch ribs are respectively moved onto two transportation ships by adopting a longitudinal moving method, the arch ribs are transported to a bridge position by adopting a double-ship floating transportation method, and finally the arch ribs are installed by adopting an integral lifting method. Large floating cranes are not required to be put into, so that the construction cost is reduced; meanwhile, the arch rib assembling support does not need to be arranged in water, and river navigation and bridge construction safety are guaranteed.
Description
Technical Field
The invention belongs to the technical field of bridge construction, relates to installation and construction of arch ribs of arch bridges, and particularly relates to a two-point floating transportation and lifting installation and construction method of arch ribs.
Background
The installation of the arch rib of the steel tube arch bridge usually comprises the construction methods of in-situ bracket installation, heterotopic assembling longitudinal shift or horizontal rotation installation, cable hoisting, large-segment hoisting, vertical rotation installation and the like, while the installation of the arch rib of the large-span river-crossing steel tube arch bridge mostly adopts a floating crane and large-segment lifting method, for example, chinese railway 2020.6 discloses a document of 'large-segment steel tube arch rib integral synchronous lifting assembling technology of a large-span railway continuous beam arch combined bridge', namely, the floating crane and large-segment lifting construction method is adopted. However, the construction cost of the large-scale floating crane is high, the method is suitable for a beam-first arch-second method, the arch rib assembling support can be erected on a bridge, for a steel structure arch bridge with a beam-first arch-second arch, the arch rib assembling support needs to be erected in water, river navigation can be influenced, a navigation ship has the hidden danger of collision with the support, and construction safety is difficult to guarantee.
Disclosure of Invention
The invention aims to provide a construction method for floating transportation of two points of arch ribs and integral lifting installation aiming at the problems in the prior art so as to reduce the construction cost and ensure the construction safety.
The technical scheme of the invention is as follows:
the construction method for two-point floating transportation and integral lifting installation of the arch rib is characterized by comprising the following steps of:
(1) Constructing an arch rib assembling field on the bank side; two trestles are erected in the water, one end of each trestle is connected with one side, close to the water, of the arch rib assembling field, the other end of each trestle extends into a river, and the height of the top surface of each trestle is flush with that of the top surface of the arch rib assembling field; laying two groups of arch rib longitudinal movement rails on an arch rib assembly site and the top surface of a trestle;
(2) Erecting an arch rib assembling support on an arch rib assembling field along an arch rib longitudinal moving track, and assembling arch ribs by adopting a support method; the two ends of the arch rib are respectively provided with an arch rib longitudinal movement pulley, the top of the arch rib longitudinal movement pulley is fixedly connected with the arch rib, and the bottom of the arch rib longitudinal movement pulley is provided with a pulley sliding along an arch rib longitudinal movement rail; after the arch rib is assembled, installing an arch rib temporary tie bar between longitudinal sliding pulleys at two ends of the arch rib, and tensioning the tie bar to form a temporary tie bar arch structure;
(3) The method comprises the following steps that a first transport ship runs to a trestle position, one side of the first transport ship is adjusted to abut against two trestles to extend ends into a river, the top surface of a ship body is adjusted to be the same as the height of the top of the trestle through weight, then the first transport ship and the trestle are temporarily fixed, and arch rib longitudinal movement rails on the trestle are extended and paved to the top of the ship;
(4) Dismantling the arch rib assembling support, pushing the arch rib longitudinal movement pulley to move towards the first transport ship along the arch rib longitudinal movement track, longitudinally moving one end of the arch rib onto the first transport ship, and fixing the arch rib assembling support with the ship body;
(5) A tugboat is used for towing a first transport boat to move towards the river along the longitudinal moving track direction of the arch rib, and the first transport boat stops moving until the other end of the arch rib reaches the trestle;
(6) The second transport ship runs to the position of the trestle, the second transport ship is fixed by adopting the method in the step (3), then the arch rib longitudinal movement pulley is pushed to move along the track, and the other end of the arch rib is moved to the second transport ship and fixed;
(7) The first and second transport ships synchronously drive to the bridge along the river, and the two ships are anchored and fixed;
(8) Lifting the arch rib by adopting a lifting method: mounting a group of arch rib lifting frames on two bridge piers respectively in advance, and mounting a synchronous hydraulic lifting system on the arch rib lifting frames; after the arch rib is transported to the bridge position, the hydraulic lifting systems on the two groups of lifting frames are respectively connected with the two ends of the arch rib, then the fixation of the arch rib and the transport ship is released, and the arch rib is lifted to the designed installation position by utilizing the synchronous hydraulic lifting system;
(9) Connecting two ends of the arch rib with arch foot embedded sections arranged on two bridge piers to complete arch rib closure;
(10) And (4) installing a permanent tie bar between the two arch foot embedded sections, and dismantling the arch rib longitudinal movement pulley and the temporary tie bar to complete the installation of the arch rib.
Further, according to the arch rib two-point floating transportation and integral lifting installation construction method, the arch rib assembly site is a cement hardened ground, two concrete track foundations are poured on the arch rib assembly site, the top surfaces of the track foundations are flush with the hardened ground, and the arch rib longitudinal movement track is laid on the concrete track foundations.
Further, in the arch rib two-point floating transportation and integral lifting installation construction method, in the arch rib assembling support dismantling process in the step (4), the supports are symmetrically dismantled from the middle of the arch rib to two sides, the stress and the line shape of the arch rib are monitored in real time, and the line shape of the arch rib is kept consistent with the designed line shape all the time by adjusting the tension of the temporary tie rod.
Further, according to the construction method for two-point floating transportation and integral lifting installation of the arch rib, the first transport ship and the second transport ship are barges, and a tugboat is adopted to drag the barges to move.
Further, according to the arch rib two-point floating and integral lifting installation construction method, the first transport ship and the second transport ship are both provided with the ballast water tanks, and the height of the top surface of the transport ship is adjusted to be the same as the standard height of the top of the trestle by adjusting the water injection amount in the ballast water tanks.
Further, according to the arch rib two-point floating and integral lifting installation construction method, after the heights of the top surfaces of the first transport ship and the second transport ship are adjusted to be the same as the standard height of the top of the trestle, full-length ballast steel is laid on the trestle and the top of the trestle, and the ship body is prevented from floating upwards.
Further, according to the construction method for two-point floating transportation and integral lifting installation of the arch rib, the top surface of the transportation ship facing the center of the river is provided with the counterweight water tank in the state that the transportation ship stops at the trestle; in the process that the arch rib moves longitudinally on the ship, the water amount in the ballast water sump and the counterweight water tank is regulated and controlled in stages, so that the transport ship is kept stable all the time.
Further, the construction method for two-point floating transportation and integral lifting installation of the arch rib is characterized in that the arch rib longitudinal movement pulley is pushed by a hydraulic jack to longitudinally move along the rail; hydraulic jack sets up one set along every track, and hydraulic jack one end is passed through the rail clamping device and is connected with the track, and the arch rib indulges the platform truck that moves, and the arch rib indulges and moves the epaxial welding otic placode of platform truck and be connected with hydraulic jack.
Further, the construction method of the arch rib two-point floating transportation and integral lifting installation comprises the steps of respectively arranging a bank anchor at two sides of a bridge at two banks of a river, and respectively arranging an underwater anchor pile at two sides of a bridge in the river; and respectively fixedly arranging a winch at 4 corners of the two transport ships, connecting 4 winches of each transport ship with the two shore anchors and the two underwater anchor piles through steel wire ropes after the transport ships travel to the bridge position, adjusting the plane position of the transport ships by tightening and loosening the steel wire ropes of the winches, and keeping the stability of the transport ships in water.
Further, according to the construction method for two-point floating transportation and integral lifting installation of the arch rib, the two ends of the arch rib and the closure end of the arch springing embedded section are respectively provided with a flange plate, and the flange plates are welded with the inner edge of the steel pipe of the arch rib by utilizing rib plates; when the arch rib is closed, the two ends of the arch rib and the arch foot embedded sections are fixedly connected through flanges, and then closing steel pipes are welded between the two ends of the arch rib and the arch foot embedded sections; and each closure steel pipe comprises two semicircular steel plates, the two semicircular steel plates are buckled and welded at the closure position of the arch rib to form the arch rib closure steel pipe, and two ends of the arch rib closure steel pipe are respectively welded with the end part of the arch rib and the arch springing embedded section to complete the arch rib closure.
According to the invention, the arch ribs are assembled on land, the arch ribs are transported to the bridge site by adopting a double-ship floating transportation mode, and then are installed by adopting an integral lifting method, so that a large floating crane is not required to be invested, and the construction cost is reduced; meanwhile, the arch rib assembling support does not need to be arranged in water, and the river navigation and bridge construction safety are guaranteed.
Drawings
FIG. 1 is a flow chart of the construction of the present invention;
FIG. 2 is a schematic plan view of the arch rib assembling field and trestle;
FIG. 3 is a schematic view of the vertical structure of the arch rib assembling site and the trestle;
FIG. 4 is a schematic perspective view of assembled arch ribs;
FIG. 5 is an enlarged view taken at A in FIG. 4, mainly illustrating the structure of the arch rib longitudinal sliding block;
FIG. 6 is a schematic side view of the structure of one end of the rib being longitudinally shifted onto the first carrier;
FIG. 7 is a schematic plan view of the longitudinal movement of one end of the rib onto the first carrier;
FIG. 8 is a schematic perspective view of the longitudinal movement of one end of the rib onto the first carrier;
FIG. 9 is a schematic side view of the other end of the rib being longitudinally shifted onto a second carrier;
FIG. 10 is a schematic plan view of the other end of the rib being translated longitudinally to a second carrier;
FIG. 11 is a schematic view of the state of two carrier transport ribs;
FIG. 12 is a schematic view of two transport vessels transporting the ribs to the bridge site;
FIG. 13 is a schematic view of the integrally lifted arch rib in an assembled state;
FIG. 14 is an exploded view of the arch rib closure segment;
fig. 15 is a schematic view showing a state after rib installation is completed.
Detailed Description
The construction process of the invention is shown in figure 1, and the general idea is to adopt a support method to assemble the arch rib into a whole on shore land, adopt two transport ships to transport the arch rib, adopt a longitudinal displacement method to respectively move two ends of the arch rib to the two transport ships, lift the arch rib to the bridge position by the two transport ships, and finally adopt an integral lifting method to install the arch rib. The specific construction method comprises the following steps:
(1) As shown in fig. 2, 3, 4 and 5, the arch rib assembling site 1 is constructed at a proper position selected on the bank. One side of the arch rib assembling field is close to the water edge, two trestles 2 are erected in the water, one ends of the two trestles are connected with one side of the arch rib assembling field, which is close to the water edge, and the other ends of the two trestles extend into the river. The top surface height of the trestle is flush with the top surface height of the arch rib assembling field, and two groups of arch rib longitudinal movement rails 3 are laid on the arch rib assembling field and the top surface of the trestle. Each group of tracks comprises two slide rails which correspond to one arch rib.
During specific construction, the arch rib assembling site 1 can be set to be a horizontal cement hardened ground, two concrete track foundations are poured on the arch rib assembling site along the direction perpendicular to a river, the top surfaces of the track foundations are flush with the hardened ground, and the arch rib longitudinal movement tracks 3 are laid on the concrete track foundations.
(2) And (3) erecting an arch rib assembling support 4 on the arch rib assembling field along an arch rib longitudinal moving track, and assembling an arch rib 5 by adopting a support method.
The two ends of the arch rib are respectively provided with an arch rib longitudinal movement pulley 6 near the arch springing, the arch rib longitudinal movement pulleys are the same as the longitudinal movement pulleys adopted by the common arch rib longitudinal movement method, the structure of the arch rib longitudinal movement pulleys is shown in figure 5, the whole arch rib longitudinal movement pulleys adopt a structural steel support structure, the top of the arch rib longitudinal movement pulleys is fixedly connected with the arch rib 5 through a steel plate in a welding mode, and the bottom of the arch rib longitudinal movement pulleys is provided with a pulley 61 capable of sliding along an arch rib longitudinal movement track.
After the arch rib is assembled, the arch rib temporary tie bars 7 are installed in a longitudinal sliding workshop at two ends of the arch rib, and the tie bars are tensioned to adjust the line type of the arch rib, so that a temporary tie bar arch structure is formed.
(3) As shown in fig. 6, 7 and 8, a first transport ship 8 is driven to the position of the trestle, one side of the first transport ship 8 is adjusted to abut against the extending ends of the two trestles 2 to the river, the top surface of the ship body is adjusted to be the same as the height of the top of the trestle by means of weight reduction, then the first transport ship 8 and the trestle 2 are temporarily fixed, and the arch rib longitudinal movement track 3 on the trestle is extended and laid to the top of the ship.
In the implementation of the present invention, in order to save cost, the first transport ship 8 and the second transport ship described later can both adopt barges, and a tugboat is adopted to drag the barges to move.
In order to adjust the weight on the transport ship conveniently, a weight water sump can be arranged in the ship body, and the height of the top surface of the transport ship is adjusted to be the same as the standard height of the top of the trestle by adjusting the water injection amount in the weight water sump.
As shown in fig. 8, after the height of the top surface of the carrier is adjusted to be the same as the standard height of the top of the trestle, the full-length ballast steel 9 can be laid on the trestle and the top of the carrier to prevent the ship body from floating.
(4) And removing the arch rib assembling support, pushing the arch rib longitudinal movement pulley to move towards the first transport ship along the arch rib longitudinal movement track, and longitudinally moving one end of the arch rib onto the first transport ship and fixing the arch rib and the ship body.
During specific construction, in the process of dismantling the support, in order to keep the balance of the arch rib and prevent the stress deformation of the arch rib, the support is symmetrically dismantled from the middle of the arch rib to two sides, the stress and the line shape of the arch rib are monitored in real time, and the line shape of the arch rib is kept consistent with the designed line shape all the time by adjusting the tensile force of the temporary tie rod.
And pushing the arch rib longitudinal movement pulley to longitudinally move along the rail through a hydraulic jack. Hydraulic jack sets up one set along every track, and hydraulic jack one end is passed through the rail clamping device and is connected with the track temporary connection, and the arch rib indulges and moves the platform truck, and the arch rib indulges and moves the welding otic placode on the platform truck and be connected with hydraulic jack. And after the hydraulic jack pushes one stroke, the rail clamping device is disconnected with the rail, after the oil returns from the oil cylinder, the rail clamping device is connected with the rail, the pushing is carried out again, and the pushing is carried out in such a way, so that the pushing arch rib longitudinally moves along the rail.
During the longitudinal movement of the arch rib to the ship, when the arch rib is just longitudinally moved to the ship body, the ship body may incline due to unbalanced stress, and the height may be reduced due to gravity. As shown in fig. 8, in order to prevent the inclination and the height drop of the ship body, a counterweight water tank 10 is arranged on the top surface of the transportation ship facing the center of the river in advance, and the water amount in the ballast water tanks and the counterweight water tank 10 is regulated in stages according to the state of the ship body in the process of longitudinally moving the arch rib onto the ship, so that the transportation ship is kept stable all the time.
(5) A first transport ship is pulled by a tugboat to move towards the river along the longitudinal movement track direction of the arch rib, and the first transport ship stops moving until the other end of the arch rib reaches the trestle;
(6) As shown in fig. 9 and 10, the second transport ship 11 travels to the position of the trestle, the second transport ship has the same structure as the first transport ship, the height of the second transport ship is adjusted and fixed with the trestle by the same method as the first transport ship, a track is laid on the second transport ship, then the arch rib longitudinal movement trolley is pushed to move along the track, and the other end of the arch rib 5 is moved to the second transport ship 11 and fixed.
(7) As shown in fig. 11 and 12, the first transport ship 8 and the second transport ship 11 carry the arch rib 5 to synchronously drive along the river to the bridge position, and then the two ships are anchored and fixed in position.
During specific construction, in order to adjust the plane position of the transport ship and anchor and position, bank anchors can be arranged on two sides of a bridge on two banks of a river in advance, underwater anchor piles are arranged on two sides of a bridge in the river respectively, and winches are fixedly arranged at 4 corners of the two transport ships respectively. After the transport ship runs to the bridge position, two winches on the first transport ship are respectively connected with two bank anchors on one bank through steel wire ropes, and the other two winches are respectively connected with two underwater anchoring piles through steel wire ropes; and two winches on the second transport ship are respectively connected with two shore anchors on the other shore, and the other two winches are respectively connected with two underwater anchor piles. The plane position of the transport ship is accurately adjusted by tightening and loosening the steel wire rope of the winch, and the position of the transport ship in water is kept stable.
(8) As shown in fig. 12 and 13, the rib is lifted by a lifting method. The two arch foot embedded sections 12 of the arch rib are poured on two bridge piers 13 in advance, a group of arch rib lifting frames 14 are respectively arranged on the two bridge piers 13 in advance, and a synchronous hydraulic lifting system is arranged on the arch rib lifting frames. After the arch rib is transported to the bridge position, the hydraulic lifting systems on the two groups of lifting frames are respectively connected with the two ends of the arch rib, then the fixation of the arch rib and the transport ship is released, and the synchronous hydraulic lifting system is utilized to lift the arch rib to the designed installation position.
(9) And connecting the two ends of the arch rib 5 with arch springing embedded sections 12 arranged on the two piers to finish the closure of the arch rib.
As shown in fig. 14, in order to facilitate the closure of the arch rib, flanges 15 may be respectively disposed at two ends of the arch rib and at the closure end of the arch foot embedded section in advance, and the flanges are welded to the inner edge of the steel pipe of the arch rib by using rib plates; when the arch rib is jointed, the two ends of the arch rib and the arch springing embedded section are fixedly connected through flanges, and then a jointing steel pipe is welded between the two ends of the arch rib and the arch springing embedded section; in order to prevent the arch rib from colliding with the arch springing embedded section when being lifted, the flange plates at the two ends of the arch rib are spaced from the flange plate of the arch springing embedded section, and a steel base plate is arranged between the two flange plates when the two flange plates are connected.
In order to facilitate installation of the closure steel pipes, each closure steel pipe consists of two semicircular steel plates 16, when closure is carried out, the two semicircular steel plates are buckled and welded at the closure position of the arch rib to form the closure steel pipe with the same diameter as the arch rib, and two ends of the arch rib closure steel pipe are respectively welded with the end part of the arch rib and the arch springpre-embedded section to complete closure of the arch rib.
(10) As shown in fig. 15, after the arch rib is closed, a permanent tie bar 17 is installed between the two arch foot embedded sections, and the arch rib longitudinal movement pulley and the temporary tie bar are removed to complete the installation of the arch rib.
Claims (10)
1. The arch rib two-point floating transportation and integral lifting installation construction method is characterized by comprising the following steps of:
(1) Constructing an arch rib assembling field on the bank side; two trestles are erected in the water, one end of each trestle is connected with one side, close to the water, of the arch rib assembling field, the other end of each trestle extends into a river, and the height of the top surface of each trestle is flush with that of the top surface of the arch rib assembling field; laying two groups of arch rib longitudinal movement rails on an arch rib assembly site and the top surface of a trestle;
(2) Erecting an arch rib assembling support on the arch rib assembling field along an arch rib longitudinal moving track, and assembling the arch ribs by adopting a support method; the two ends of the arch rib are respectively provided with an arch rib longitudinal movement pulley, the top of the arch rib longitudinal movement pulley is fixedly connected with the arch rib, and the bottom of the arch rib longitudinal movement pulley is provided with a pulley which slides along an arch rib longitudinal movement track; after the arch rib is assembled, installing arch rib temporary tie bars between longitudinal sliding pulleys at two ends of the arch rib, and tensioning the tie bars to form a temporary tie bar arch structure;
(3) The method comprises the following steps that a first transport ship runs to a trestle position, one side of the first transport ship is adjusted to abut against two trestles to extend ends into a river, the top surface of a ship body is adjusted to be the same as the height of the top of the trestle through weight, then the first transport ship and the trestle are temporarily fixed, and arch rib longitudinal movement rails on the trestle are extended and paved to the top of the ship;
(4) Dismantling the arch rib assembling support, pushing the arch rib longitudinal movement pulley to move towards the first transport ship along the arch rib longitudinal movement track, longitudinally moving one end of the arch rib onto the first transport ship, and fixing the arch rib assembling support with the ship body;
(5) A first transport ship is pulled by a tugboat to move towards the river along the longitudinal movement track direction of the arch rib, and the first transport ship stops moving until the other end of the arch rib reaches the trestle;
(6) The second transport ship runs to the position of the trestle, the second transport ship is fixed by adopting the method in the step (3), then the arch rib longitudinal movement pulley is pushed to move along the track, and the other end of the arch rib is moved to the second transport ship and fixed;
(7) The first and second transport ships synchronously run along the river to the bridge position, and the two ships are anchored and positioned;
(8) Lifting the arch rib by adopting a lifting method: mounting a group of arch rib lifting frames on two bridge piers respectively in advance, and mounting a synchronous hydraulic lifting system on the arch rib lifting frames; after the arch rib is transported to the bridge position, the hydraulic lifting systems on the two groups of lifting frames are respectively connected with the two ends of the arch rib, then the fixation of the arch rib and the transport ship is released, and the arch rib is lifted to the designed installation position by utilizing the synchronous hydraulic lifting system;
(9) Connecting two ends of the arch rib with arch foot embedded sections arranged on two bridge piers to complete arch rib closure;
(10) And (4) installing a permanent tie bar between the two arch foot embedded sections, and dismantling the arch rib longitudinal movement pulley and the temporary tie bar to complete arch rib installation.
2. The arch rib two-point floating and integral lifting installation construction method according to claim 1, characterized in that: the arch rib assembling site is a cement hardened ground, two concrete track foundations are poured on the arch rib assembling site, the top surfaces of the track foundations are flush with the hardened ground, and the arch rib longitudinally-moving tracks are laid on the concrete track foundations.
3. An arch rib two-point floating and integral lifting installation construction method as claimed in claim 1, wherein: and (4) in the process of dismantling the arch rib assembling support in the step (4), symmetrically dismantling the support from the middle of the arch rib to two sides, monitoring the stress and the line shape of the arch rib in real time, and keeping the line shape of the arch rib consistent with the designed line shape all the time by adjusting the tension of the temporary tie rod.
4. The arch rib two-point floating and integral lifting installation construction method according to claim 1, characterized in that: the first transport ship and the second transport ship are both barges, and the barges are dragged to move by using tugboats.
5. An arch rib two-point floating and integral lifting installation construction method as claimed in claim 1, wherein: the first transport ship and the second transport ship are internally provided with a ballast water sump, and the height of the top surface of the transport ship is adjusted to be the same as the height of the top of the trestle by adjusting the water injection amount in the ballast water sump.
6. An arch rib two-point floating and integral lifting installation construction method as claimed in claim 5, wherein: after the top surfaces of the first transport ship and the second transport ship are adjusted to be the same as the standard height of the top of the trestle, the full-length ballast steel is laid on the trestle and the top of the ship, and the ship body is prevented from floating.
7. An arch rib two-point floating and integral lifting installation construction method as claimed in claim 5, wherein: under the state that the transport ship is stopped at the trestle, the top surface of the transport ship facing to the center of the river is provided with a counterweight water tank; in the process that the arch rib moves longitudinally on the ship, the water amount in the ballast water sump and the counterweight water tank is regulated and controlled in stages, so that the transport ship is kept stable all the time.
8. The arch rib two-point floating and integral lifting installation construction method according to claim 1, characterized in that: pushing an arch rib longitudinal movement pulley to longitudinally move along the rail through a hydraulic jack; the hydraulic jack sets up one set along every track, and hydraulic jack one end is passed through the rail clamping device and is connected with the track, and the arch rib indulges to move the platform truck, and the arch rib indulges to move and welds the otic placode and be connected with hydraulic jack on the platform truck.
9. An arch rib two-point floating and integral lifting installation construction method as claimed in claim 1, wherein: two sides of a bridge on both sides of the river are respectively provided with a bank anchor, and two sides of a bridge in the river are respectively provided with an underwater anchor pile; and respectively fixedly arranging a winch at 4 corners of the two transport ships, connecting 4 winches of each transport ship with the two shore anchors and the two underwater anchor piles through steel wire ropes after the transport ships travel to the bridge position, adjusting the plane position of the transport ships by tightening and loosening the steel wire ropes of the winches, and keeping the stability of the transport ships in water.
10. An arch rib two-point floating and integral lifting installation construction method as claimed in claim 1, wherein: the two ends of the arch rib and the closure end of the arch foot embedded section are respectively provided with a flange plate, and the flange plates are welded with the inner edge of the arch rib steel pipe by utilizing rib plates; when the arch rib is closed, the two ends of the arch rib and the arch foot embedded sections are fixedly connected through flanges, and then closing steel pipes are welded between the two ends of the arch rib and the arch foot embedded sections; and each closure steel pipe comprises two semicircular steel plates, the two semicircular steel plates are buckled and welded at the closure position of the arch rib to form the arch rib closure steel pipe, and two ends of the arch rib closure steel pipe are respectively welded with the end part of the arch rib and the arch foot embedded section to complete the arch rib closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210819969.6A CN115198645A (en) | 2022-07-12 | 2022-07-12 | Two-point floating transportation and integral lifting installation construction method for arch rib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210819969.6A CN115198645A (en) | 2022-07-12 | 2022-07-12 | Two-point floating transportation and integral lifting installation construction method for arch rib |
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| Publication Number | Publication Date |
|---|---|
| CN115198645A true CN115198645A (en) | 2022-10-18 |
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|---|---|---|---|
| CN202210819969.6A Withdrawn CN115198645A (en) | 2022-07-12 | 2022-07-12 | Two-point floating transportation and integral lifting installation construction method for arch rib |
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| Country | Link |
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| CN (1) | CN115198645A (en) |
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2022
- 2022-07-12 CN CN202210819969.6A patent/CN115198645A/en not_active Withdrawn
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Inventor after: Lu Guannan Inventor after: Yu Ce Inventor after: Li Ye Inventor after: Xu Jun Inventor after: Li Liuzhou Inventor after: Di Xiaolong Inventor after: Jiang Delin Inventor after: Huang Zhenwei Inventor after: Xiao Xiangrong Inventor after: Li Yong Inventor after: Liu Linwang Inventor after: Wang Anwen Inventor after: Xue Hui Inventor after: Wang Junlei Inventor before: Huang Zhenwei Inventor before: Jiang Delin Inventor before: Wang Anwen Inventor before: Xue Hui Inventor before: Yu Ce Inventor before: Li Ye Inventor before: Li Liuzhou |
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Application publication date: 20221018 |