CN106758753B - A kind of Suo Liang combined bridges and its construction method - Google Patents

A kind of Suo Liang combined bridges and its construction method Download PDF

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Publication number
CN106758753B
CN106758753B CN201710161666.9A CN201710161666A CN106758753B CN 106758753 B CN106758753 B CN 106758753B CN 201710161666 A CN201710161666 A CN 201710161666A CN 106758753 B CN106758753 B CN 106758753B
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longeron
cable wire
construction
bridge
strut
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CN106758753A (en
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柴生波
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Xian University of Science and Technology
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Xian University of Science and Technology
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D12/00Bridges characterised by a combination of structures not covered as a whole by a single one of groups E01D2/00 - E01D11/00
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges

Abstract

The invention discloses a kind of Suo Liang combined bridges and its construction methods, the Suo Liang combined bridges include multiple bridge subsections, the bridge subsection includes girder construction, pave-load layer and wire rope structure, and the girder construction includes multiple row longeron, and the wire rope structure includes cable wire and strut;The construction method to dividing multiple bridge subsections to construct institute's construction bridges from front to back along bridge longitudinal extension, and the construction method all same of multiple bridge subsections, to the work progress following steps of any bridge subsection:One, first bridge subsection construction:101, girder construction construct, 102, installation wire rope structure, step 103, deck paving;Two, next bridge subsection construction;Three, step 2 is repeated several times, until completing whole work progress of institute's construction bridges.Girder construction of the present invention is all pressurized and cable wire tension, and the section of girder construction and dead weight reduce, and reduce girder construction moment of flexure, increase span ability.

Description

A kind of Suo Liang combined bridges and its construction method
Technical field
The invention belongs to technical field of bridge construction, more particularly, to a kind of Suo Liang combined bridges and its construction method.
Background technology
Reinforced concrete beam bridge is the primary structure form that current Short/Medium Span Bridge uses.Beam bridge mainly with by Bridge based on curved, existing compressive region also has tensile region in the beam body of beam bridge.Concrete material compression strength is high, mixed by giving Solidifying soil configuration regular reinforcement or prestressed strand, beam bridge can give full play to the tension of concrete anti-compression ability and reinforcing bar or steel beam Ability has good economic performance.When beam bridge across footpath increases, because the quadratic power of beam body moment of flexure and beam body across footpath is at just Than beam body moment of flexure can increase rapidly, and in order to resist girder construction moment of flexure, the beam body section for increasing beam bridge be needed, however, working as beam body Section increases the increase for resulting in girder construction own wt again, further increases girder construction moment of flexure.Therefore, girder construction Own wt limits the span ability of reinforced concrete beam bridge so that reinforced concrete beam bridge is based on Mid and minor spans.
Suspension bridge is the maximum bridge of current span ability, has reached 3300m in the maximum span suspension bridge main span built.It is outstanding Cable bridge is divided into earth anchored suspension bridge and self-anchored suspension bridge from loading characteristic, and earth anchored suspension bridge is typically only used for long-span bridge Liang Zhong, self-anchored suspension bridge are adapted to small across footpath bridge.Main supporting member is main push-towing rope in earth anchored suspension bridge, by main push-towing rope Pulling force carrys out the permanent mobile load of resisting structure, and main push-towing rope uses steel wire rope wirerope or parallel strands wirerope, since the tensile capacity of wirerope is strong, Suspension bridge can give full play to the tensile property of wirerope, and the permanent mobile load of bridge is transferred to bridge tower and anchorage by hoist cable through main push-towing rope. Large-span suspension bridge, which generally requires, to be built huge anchorage and transmits the level come and vertical tension to resist main push-towing rope, anchorage cost compared with It is high;Self-anchored suspension bridge, main push-towing rope internal force is small, can main push-towing rope be directly anchored at longeron end, and main push-towing rope level is undertaken using longeron Component saves the expense for building anchorage, but still needs to build bridge tower, and end bay need to ensure certain length to anchor main push-towing rope, side In across than a certain range need to be met.
The advantages of to adapt to large span, needing to combine conventional girder and suspension bridge stress, is combined formula design to bridge, Give full play to the compressive strength height and the high advantage of cable wire tensile strength of concrete.But nowadays, combined bridge is carried out When construction, less, the difficulty of construction of using for reference construction information when especially constructing to cable wire and the box-like bridge of coagulation local soil type Greatly.
Invention content
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of Suo Liang combinations Formula bridge, simple structure and reasonable design and easy construction, using effect are good, being capable of binding reinforcement concrete longeron and cable wire The advantages of, cable wire tension balances beam body pressure itself, and girder construction is all pressurized, and reduces the section of girder construction, mitigates beam body The dead weight of structure, while strut compression generates girder construction upward support force, reduces on girder construction caused by dead load Girder construction moment of flexure increases span ability, highly practical.
In order to solve the above technical problems, the technical solution adopted by the present invention is:A kind of Suo Liang combined bridges, feature exist In:Including multiple bridge subsections laid from front to back along bridge longitudinal extent direction, the knot of multiple bridge subsections Structure all same, each bridge subsection include the girder construction being laid on institute's construction bridges bridge pier, are paved on the beam Pave-load layer in body structure and the wire rope structure in the girder construction bottom is set;
The girder construction includes the multiple row longeron laid from left to right along the transverse width direction of institute's construction bridges bridge pier, Longeron described in multiple row is laid in same level, and longeron described in each column includes polylith along the longitudinal direction of institute's construction bridges bridge pier Length direction is laid in the longeron segment in same level from front to back, between the adjacent two row longeron and adjacent two pieces of institutes It states and is both provided with diaphragm plate between longeron segment, the longeron segment is armored concrete longeron, and the both ends of the longeron are located at On institute's construction bridges bridge pier, and the longeron is provided at both ends with anchorage;
The quantity of the wire rope structure is multiple, the structure all same of multiple wire rope structures, each cable wire knot Structure include the cable wire being anchored on the anchorage at the bottom of longeron and both ends is set and be articulated with the longeron and cable wire it Between strut, the quantity of the strut be it is multiple, multiple struts along the longeron bottom length direction from front to back into Row is laid, and multiple struts are in uniformly distributed.
Above-mentioned Suo Liang combined bridges, it is characterised in that:The cable wire is steel wire rope or steel strand wires, and the cable wire is in throwing Object is linear.
Above-mentioned Suo Liang combined bridges, it is characterised in that:The diaphragm plate is armoured concrete slab.
Above-mentioned Suo Liang combined bridges, it is characterised in that:The bottom of the longeron segment is embedded with steel member, the steel The bottom of component is provided with for first hinged seat hinged with strut, and the strut includes rectangular portion and is arranged in the rectangle The half-round at portion both ends is respectively arranged with the first mounting hole above the rectangular portion in two half-rounds and is located at The second mounting hole below the rectangular portion installs upper pin in first mounting hole, under being installed in second mounting hole Axis pin, the upper pin are installed in the first hinged seat.
Above-mentioned Suo Liang combined bridges, it is characterised in that:The strut is concrete filled steel tube or shaped steel, the strut Cross-sectional shape be circle.
Above-mentioned Suo Liang combined bridges, it is characterised in that:The connector hinged with strut, institute are provided on the cable wire It includes the circumferential part being sleeved on cable wire and the second hinged seat for being arranged above the circumferential part to state connector, the lower bearing pin It is installed in the second hinged seat.
Meanwhile a kind of the invention also discloses method and steps simple, reasonable design and the good rope of easy construction, using effect Beam modular bridge beam construction method, which is characterized in that divide multiple bridge subsections to institute from front to back along bridge longitudinal extension Construction bridges are constructed, and the construction method all same of multiple bridge subsections, wherein to bridge subsection described in any one Work progress is as follows:
Step 1: first bridge subsection construction, includes the following steps:
Step 101, girder construction construction:Multiple row longeron is installed on current two neighboring bridge pier from left to right, it is more Arrange that the longeron is laid in same level and it is assemblied to form girder construction, the both ends of the longeron, which are respectively arranged in, works as On the preceding two neighboring construction bridges bridge pier;
Longeron described in each column is laid in including polylith along the longitudinal length of presently described bridge pier from front to back Longeron segment in same level, between the adjacent two row longeron between adjacent two pieces of longeron segments cast in place reinforced bar Concrete forms diaphragm plate;
Step 102, installation wire rope structure:Using manually in the bottom of longeron installation wire rope structure, multiple cable wire knots The installation method all same of structure, wherein as follows for the installation process of any one wire rope structure:
Step 1021, installation strut:Strut is installed from front to back in the bottom of longeron, makes upper end and the longeron of the strut Bottom it is hinged, until all struts install in the wire rope structure;Wherein, the level interval phase of two neighboring strut Together;
Step 1022, installation cable wire:Strut is installed cable wire, is made under cable wire and strut after installation is complete in step 1021 End is hinged;
Step 1023, tensioning cable wire simultaneously anchor:Cable wire is after installation is complete in step 1022, and cable wire is carried out tensioning and anchor Gu specifically including following steps:
The calculating of step I, longeron rigidity and cable wire rigidity:Apply unit uniform load on the longeron, when cable wire Elasticity modulus is equal to zero, using data processing equipment and according to formulaObtain the rigidity k of longeron1, and store to In the memory to connect with the data processing equipment, wherein EcFor the elasticity modulus of longeron, I is the bending resistance inertia of longeron Square, L are the across footpath length of longeron;
On the longeron apply unit uniform load, when longeron bending stiffness be equal to zero, using data processing equipment And according to formulaObtain the rigidity k of cable wire2, and store into the memory, wherein EsFor The elasticity modulus of cable wire, A are the cross-sectional area of cable wire, and n=f/L, f are the sag of cable wire;
Step II, mat formation before the dead load intensity that undertakes of cable wire and deck paving distribute to cable wire dead load intensity calculating: Deck paving load collection degree is q when drafting into bridge, and the dead load intensity at cable wire when bridge is qc, using data processing equipment and root According to formulaObtain the dead load intensity q that deck paving distributes to cable wirec1, and store into the memory;It adopts again With data processing equipment and according to formulaThe dead load intensity q that cable wire undertakes before being mated formationc2, and store To in the memory;
Step III, mat formation before cable wire initial tension calculating:The data processing equipment is used first and according to formulaAnd the dead load intensity q that cable wire undertakes before mating formation in conjunction with what is stored in step IIc2, cable wire water before being mated formation Square to tension H;Then the data processing equipment is used and according to formulaAnd it combines and is stored in step II Mat formation before the dead load intensity q that undertakes of cable wirec2, before being mated formation vertical square of cable wire to tension V;Finally, using the number According to processing equipment and according to formulaThe initial tension T of cable wire before being mated formation, and store to the memory In;
Step IV, tensioning cable wire simultaneously anchor:The initial tension T of cable wire before being mated formation according to what is obtained in step III, to described Cable wire carries out tensioning, until when the initial tension of cable wire reaches T, the both ends of cable wire are anchored in the institute of the longeron both ends setting It states on anchorage;
Step 1021 is repeated several times to step 1023 in step V, completes the installation of multiple wire rope structures;
Step 103, deck paving:After being anchored to wire rope structure in step V, pitch of mating formation on the girder construction Concrete forms the pave-load layer, until the dead load intensity of cable wire is by the dead load intensity q before mating formation when tensioningc2Increase to dead load collection Spend qc, reach and draft bridge completion state.
Step 2: next bridge subsection construction, includes the following steps:
Step 201, girder construction construction:Multiple row longeron is installed on next two neighboring bridge pier from left to right, Longeron described in multiple row is laid in same level and it is assemblied to form girder construction, and the both ends of the longeron are respectively arranged in On next two neighboring bridge pier, and in the front side of presently described girder construction and a upper girder construction Cast-in-situ steel reinforced concrete forms diaphragm plate between rear side, makes the front side of presently described girder construction and a upper girder construction Rear side splicing fix;
Step 202, installation wire rope structure:According to the method described in step 102, indulged in current institute's construction bridges segment The bottom of beam is installed by wire rope structure;
Step 203, deck paving:After after wire rope structure described in step 202, installation is complete, on the girder construction upper berth Dress protective layer forms the pave-load layer;
Step 3: step 2 is repeated several times, until completing whole work progress of institute's construction bridges.
Above-mentioned method, it is characterised in that:Before carrying out girder construction construction in a step 101, bridge pier is first carried out Construction, and the setting support on the two neighboring bridge pier, the bridge pier is along bridge longitudinal length by preceding To rear laying.
Above-mentioned method, it is characterised in that:When installing strut in step 1021, first in the first mounting hole of strut and second Upper pin and lower bearing pin are installed respectively in mounting hole, then the upper pin is mounted in the first hinged seat;Pacify in step 1022 When steel loading rope, connector is first set on cable wire, then the lower bearing pin is mounted in the second hinged seat.
Compared with the prior art, the present invention has the following advantages:
1, used Suo Liang modular bridge structures reasonable design and easy construction, input construction cost are relatively low.
2, used Suo Liang combined bridges include the girder construction being laid on institute's construction bridges bridge pier, are paved on institute It states the pave-load layer on girder construction and the wire rope structure in the girder construction bottom is set, pass through girder construction and wire rope structure Combination, cable wire tension balance beam body pressure itself, make girder construction all be pressurized, the section of girder construction is obviously reduced, subtracts The light dead weight of girder construction;Simultaneous tension cable wire, strut compression generate girder construction upward support force, reduce beam body Girder construction moment of flexure caused by dead load, increases span ability in structure.Also there is compressive region in traditional existing tensile region of girder construction, And girder construction of the present invention is all pressurized, and longeron is armored concrete longeron in girder construction, keeps reinforcing bar in girder construction mixed The compressive strength height of solidifying soil longeron is matched with the tensile strength height of cable wire in wire rope structure, it is ensured that armored concrete and cable wire fill Material property is waved in distribution.
3, used wire rope structure is simple and easy construction, and input construction cost is relatively low, the longeron in girder construction Cable wire is installed in bottom, and the pulling force of cable wire passes to longeron in girder construction by the anchorage that longeron both ends are arranged, to make beam body Structure is all pressurized, and using effect is good, and construction quality is easy to ensure.
4, used pole structure is simple, processing and fabricating and simple installation, fast implements upper end and the beam body knot of strut Structure is hinged, and the lower end of strut and cable wire are hinged, to make strut between girder construction and cable wire, the strut in tensioning cable wire Compression generates girder construction upward support force, to make strut be supported girder construction, improves girder construction and holds The effect for carrying on a shoulder pole dead load and mobile load, reduces the moment of flexure of girder construction.
5, used girder construction and wire rope structure easy construction and using effect is good, to girder construction and wire rope structure Between when being constructed, without any weld job, wire rope structure is notheated deformation, and wire rope structure monolithic stability can be effective Hidden danger of quality caused by avoiding cable wire or strut from deforming, and manually the amount of devoting oneself to work is small, because of strut and girder construction and steel The connection of rope, welding effect is economic and practical, is easily installed.Also, girder construction, cable wire and strut are connected as one, and can be had Effect improves the mechanical property for improving girder construction, makes girder construction stressed effect more preferably.
6, the moment of flexure that used girder construction and wire rope structure can be resisted is big, and effect is good, passes through girder construction and cable wire The combination of structure makes the vertical distance of girder construction and cable wire be more than the deck-molding of traditional beam bridge, between girder construction and cable wire Torque it is larger, to make girder construction that can resist larger permanent mobile load moment of flexure.
7, used Suo Liang combined bridges facilitate detection and are easily changed, and can be detected to the tension of cable wire, Again can after cable tension relaxation can tensioning again, formed stablize, reliable bridge structure, can effectively solve traditional bridge machinery Difficulty can not replace prestressed strand, and concrete cracking, bridge construction quality caused by prestressed strand relaxation are not easy to protect Card, the problems such as durability is poor.
8, used Suo Liang combined bridges construction method step is simple, reasonable design and input construction cost are relatively low, Suo Liang combined bridge quality is easy to ensure, and construction speed is fast, is combined and is applied using girder construction and wire rope structure Work makes girder construction compression and cable wire tension, reduces section and the dead weight of girder construction, while during tensioning cable wire, The strut compression installed on cable wire generates girder construction upward support force, reduces beam body caused by dead load on girder construction Structural bending moments increase span ability, it is ensured that the bridge structure of construction molding is firm;The wire rope structure with beam body knot of installation simultaneously Structure is connected as one, and improves the mechanical property of girder construction, and construction bridges quality is easy to ensure, is solved in traditional bridge The problems such as concrete cracking, prestressed strand caused by prestressed strand relaxation can not be replaced, effectively improves quality of finished bridge, drops Low difficulty of construction.
In conclusion the configuration of the present invention is simple, reasonable design and easy construction, using effect are good, can binding reinforcement it is mixed The advantages of solidifying soil longeron and cable wire, cable wire tension balance beam body pressure itself, and girder construction is all pressurized, and reduces girder construction Section mitigates the dead weight of girder construction, while strut compression generates girder construction upward support force, reduces girder construction Girder construction moment of flexure caused by upper dead load, increases span ability, highly practical.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Description of the drawings
Fig. 1 is the structural schematic diagram of jackshaft girder segment of the present invention.
Fig. 2 is the A-A sectional views of Fig. 1.
Fig. 3 is the structural schematic diagram of strut of the present invention.
Fig. 4 is the structural schematic diagram of steel member of the present invention.
Fig. 5 is the structural schematic diagram of connector of the present invention.
Fig. 6 is the construction method flow diagram of Suo Liang combined bridges of the present invention.
Reference sign:
1-girder construction;1-1-longeron;1-2-longeron segment;
2-wire rope structures;2-1-cable wire;2-2-strut;
2-2-1-rectangular portion;2-2-2-half-round;3-diaphragm plates;
4-steel members;5-connectors;5-1-circumferential part;
The second hinged seats of 5-2-;6-the first hinged seat;7-the first mounting hole;
8-the second mounting hole;9-upper pins;10-lower bearing pins.
Specific implementation mode
A kind of Suo Liang combined bridges as depicted in figs. 1 and 2, including it is multiple along bridge longitudinal extent direction by preceding To the bridge subsection of rear laying, the structure all same of multiple bridge subsections, each bridge subsection includes being laid in Girder construction 1 on institute's construction bridges bridge pier, the pave-load layer being paved on the girder construction 1 and it is arranged in the girder construction The wire rope structure 2 of 1 bottom;
The girder construction 1 includes the multiple row longeron laid from left to right along the transverse width direction of institute's construction bridges bridge pier 1-1, longeron 1-1 described in multiple row are laid in same level, and longeron 1-1 described in each column includes polylith along institute's construction bridges The longitudinal length of bridge pier is laid in the longeron segment 1-2 in same level, the adjacent two row longeron 1-1 from front to back Between be both provided with diaphragm plate 3 between adjacent two pieces of longeron segment 1-2, the longeron segment 1-2 is armored concrete The both ends of longeron, the longeron 1-1 are located on institute's construction bridges bridge pier, and the longeron 1-1 is provided at both ends with anchorage;
The quantity of the wire rope structure 2 is multiple, the structure all same of multiple wire rope structures 2, each cable wire Structure 2 includes that the cable wire 2-1 being anchored on the anchorage at the bottom of longeron 1-1 and both ends is arranged and is articulated with the longeron The quantity of strut 2-2, the strut 2-2 between 1-1 and cable wire 2-1 are multiple, and multiple strut 2-2 are along the longeron 1- The length direction of 1 bottom is laid from front to back, and multiple strut 2-2 are in uniformly distributed.
In the present embodiment, which is to be combined girder construction 1 and wire rope structure 2, in girder construction 1 Longeron 1-1 undertake the dead load and mobile load of bridge floor, longeron 1-1 gives the load transmission born to the both ends longeron 1-1.Longeron 1-1 two The load at end delivers load to cable wire 2-1 by strut 2-2, makes cable wire 2-1 tensions, meanwhile, the pulling force of cable wire 2-1 passes through institute It states anchorage and passes to longeron 1-1, longeron 1-1 is made to bear pressure, cable wire 2-1 tensions balance longeron 1-1 pressure itselfs, then, beam 1 longeron 1-1 of body structure is whole to be pressurized, and reduces the section of 1 longeron 1-1 of girder construction, alleviates 1 longeron 1-1 of girder construction oneself Weight, simultaneous tension cable wire 2-1, strut 2-2 compressions generate upward support force to longeron 1-1 in girder construction, reduce longeron 1 moment of flexure of girder construction, increases span ability caused by the upper dead loads of 1-1.Also, longeron 1-1 is in used girder construction 1 Armored concrete longeron, the compressive strength height and cable wire 2- in wire rope structure 2 for making armored concrete longeron described in girder construction 1 1 tensile strength height matches, it is ensured that armored concrete and cable wire give full play to material property.
In the present embodiment, the cable wire 2-1 is steel wire rope or steel strand wires, the cable wire 2-1 parabolically shapes.
In the present embodiment, by the way that cable wire 2-1 is arranged, the pulling force of cable wire 2-1 is transmitted by the anchorage at the both ends longeron 1-1 To longeron 1-1 in girder construction 1, cable wire 2-1 tensions balance longeron 1-1 pressure itselfs in girder construction 1, to make beam body knot Structure 1 is all pressurized, easy construction, and using effect is good, and construction quality is easy to ensure.
In the present embodiment, the diaphragm plate 3 is armoured concrete slab.
As shown in Figure 3 and Figure 4, in the present embodiment, the bottom of the longeron segment 1-2 is embedded with steel member 4, the steel structure The bottom of part 4 is provided with for first hinged seat 6 hinged with strut 2-2, and the strut 2-2 includes rectangular portion 2-2-1 and sets It sets and is respectively arranged on the half-round 2-2-2, two half-round 2-2-2 at the both ends the rectangular portion 2-2-1 positioned at described The first mounting hole 7 above rectangular portion 2-2-1 and the second mounting hole 8 positioned at 2-2-1 below the rectangular portion, first peace It fills and upper pin 9 is installed in hole 7, lower bearing pin 10 is installed in second mounting hole 8, the upper pin 9 is installed on the first hinged seat 6 In.
In the present embodiment, the strut 2-2 is concrete filled steel tube or shaped steel, and the cross-sectional shape of the strut 2-2 is It is round.
It is the strut in order to which the upper end of strut 2-2 and girder construction 1 to be hinged by the way that strut 2-2 is arranged in the present embodiment The lower end of 2-2 is hinged with cable wire 2-1, to make strut 2-2 between girder construction 1 and cable wire 2-1, in tensioning cable wire 2-1 When strut 2-2 compression upward support force is generated to girder construction 1, to make strut 2-2 be supported girder construction 1, carry High girder construction 1 undertakes the effect of dead load and mobile load, reduces the moment of flexure of girder construction.
As shown in figure 5, in the present embodiment, the connector 5 hinged with strut 2-2, the company are provided on the cable wire 2-1 Fitting 5 includes the circumferential part 5-1 being sleeved on cable wire 2-1 and the second hinged seat 5-2 being arranged above the circumferential part 5-1, The lower bearing pin 10 is installed in the second hinged seat 5-2.
In the present embodiment, by setting the first mounting hole 7 and the second mounting hole 8 with respectively at installation upper pin 9 and under Axis pin 10, by the way that the first hinged seat 6 and the second hinged seat 5-2 is arranged so that the upper pin 9 and the lower bearing pin 10 are pacified respectively In the first hinged seat 6 and the second hinged seat 5-2, thus by steel structure pre-buried in the upper end of strut 2-2 and girder construction 1 Part 4 is hinged, and the lower end of strut 2-2 is hinged with cable wire 2-1, and installation is convenient, time saving and energy saving.
In the present embodiment, by the way that the second hinged seat 5-2 is arranged on connector 5, be in order to mounted on the second mounting hole 8 Interior lower bearing pin 10 is hinged;By be arranged connector 5 in circumferential part 5-1, be in order to which connector 5 is sleeved on cable wire 2-1, Circumferential part 5-1 and cable wire 2-1 fits closely the relative position for defining circumferential part 5-1 and cable wire 2-1, and circumferential part 5-1 is avoided to exist It is slided on cable wire 2-1, drives strut 2-2 to be slided on cable wire 2-1 to avoid circumferential part 5-1, improve cable wire 2-1 stressed effects.
As shown in fig. 6, dividing multiple bridge subsections to apply institute's construction bridges from front to back along bridge longitudinal extension Work, and the construction method all same of multiple bridge subsections, wherein as follows to the work progress of bridge subsection described in any one:
Step 1: first bridge subsection construction, includes the following steps:
Step 101, girder construction construction:Multiple row longeron 1-1 is installed on current two neighboring bridge pier from left to right, Longeron 1-1 described in multiple row is laid in same level and it is assemblied to form girder construction 1, the both ends point of the longeron 1-1 It is not installed on the current two neighboring construction bridges bridge pier;
Longeron 1-1 described in each column is laid including polylith along the longitudinal length of presently described bridge pier from front to back Between longeron segment 1-2 in same level, the adjacent two row longeron 1-1 and the adjacent two pieces longeron segment 1-2 Between cast-in-situ steel reinforced concrete formed diaphragm plate 3;
Step 102, installation wire rope structure:Using manually in the bottom of longeron 1-1 installation wire rope structure 2, multiple steel The installation method all same of Cable Structure 2, wherein as follows for the installation process of any one wire rope structure 2:
Step 1021, installation strut:Strut 2-2 is installed from front to back in the bottom of longeron 1-1, makes the strut 2-2's Upper end and the bottom of longeron 1-1 are hinged, until all strut 2-2 are installed in the wire rope structure 2;Wherein, two neighboring The level interval of strut 2-2 is identical;
Step 1022, installation cable wire:Strut 2-2 installs cable wire 2-1, makes cable wire 2-1 after installation is complete in step 1021 It is hinged with the lower end of strut 2-2;
Step 1023, tensioning cable wire simultaneously anchor:Cable wire 2-1 is after installation is complete in step 1022, and cable wire 2-1 is opened It draws and anchors, specifically include following steps:
The calculating of step I, longeron rigidity and cable wire rigidity:Apply unit uniform load on the longeron 1-1, works as cable wire The elasticity modulus of 2-1 is equal to zero, using data processing equipment and according to formulaObtain the rigidity k of longeron 1-11, And store into the memory to connect with the data processing equipment, wherein EcFor the elasticity modulus of longeron 1-1, I is longeron 1- 1 bending resistance the moment of inertia, L are the across footpath length of longeron 1-1;
On the longeron 1-1 apply unit uniform load, when longeron 1-1 bending stiffness be equal to zero, at data Manage equipment and according to formulaObtain the rigidity k of cable wire 2-12, and store into the memory, Wherein, EsFor the elasticity modulus of cable wire 2-1, A is the cross-sectional area of cable wire 2-1, and n=f/L, f are the sag of cable wire 2-1;
Step II, mat formation before the dead load intensity that undertakes of cable wire and deck paving distribute to cable wire dead load intensity calculating: Deck paving load collection degree is q when drafting into bridge, and the dead load intensity at cable wire 2-1 when bridge is qc, using data processing equipment and According to formulaObtain the dead load intensity q that deck paving distributes to cable wire 2-1c1, and store to the memory In;Data processing equipment is used again and according to formulaThe dead load intensity that cable wire 2-1 undertakes before being mated formation qc2, and store into the memory;
Step III, mat formation before cable wire initial tension calculating:The data processing equipment is used first and according to formulaAnd the dead load intensity q that cable wire 2-1 undertakes before mating formation in conjunction with what is stored in step IIc2, cable wire before being mated formation The tension H of 2-1 horizontal directions;Then the data processing equipment is used and according to formulaAnd it combines in step II The dead load intensity q that cable wire 2-1 undertakes before what is stored mat formationc2, before being mated formation vertical square of cable wire 2-1 to tension V;Most Afterwards, using the data processing equipment and according to formulaThe initial tension T of cable wire 2-1 before being mated formation, and It stores into the memory;
Step IV, tensioning cable wire simultaneously anchor:The initial tension T of cable wire 2-1 before being mated formation according to what is obtained in step III, to institute It states cable wire 2-1 and carries out tensioning, until when the initial tension of cable wire 2-1 reaches T, the both ends of cable wire 2-1 are anchored in the longeron On the anchorage of the both ends 1-1 setting;
Step 1021 is repeated several times to step 1023 in step V, completes the installation of multiple wire rope structures 2;
Step 103, deck paving:After being anchored to wire rope structure 2 in step V, drip of mating formation on the girder construction 1 Green concrete forms the pave-load layer, until the dead load intensity of cable wire 2-1 is by the dead load intensity q before mating formation when tensioningc2It increases to Dead load intensity qc, reach and draft bridge completion state.
Step 2: next bridge subsection construction, includes the following steps:
Step 201, girder construction construction:Multiple row longeron 1- is installed on next two neighboring bridge pier from left to right 1, longeron 1-1 described in multiple row is laid in same level and it is assemblied to form girder construction 1, the both ends of the longeron 1-1 It is respectively arranged on next two neighboring bridge pier, and in the front side of presently described girder construction 1 and a upper institute It states cast-in-situ steel reinforced concrete between the rear side of girder construction 1 and forms diaphragm plate 3, make the front side of presently described girder construction 1 and upper The rear side splicing of one girder construction 1 is fixed;
Step 202, installation wire rope structure:According to the method described in step 102, indulged in current institute's construction bridges segment The bottom of beam 1-1 is installed by wire rope structure 2;
Step 203, deck paving:After after wire rope structure 2 described in step 202, installation is complete, on the girder construction 1 Protective layer of mating formation forms the pave-load layer;
Step 3: step 2 is repeated several times, until completing whole work progress of institute's construction bridges.
In the present embodiment, before carrying out the construction of girder construction 1 in a step 101, the first construction of progress bridge pier, and Setting support on the two neighboring bridge pier, the bridge pier are laid from front to back along bridge longitudinal length.
When strut 2-2 is installed in the present embodiment, in step 1021, first installed in the first mounting hole 7 and second of strut 2-2 Upper pin 9 and lower bearing pin 10 are installed respectively in hole 8, then the upper pin 9 is mounted in the first hinged seat 6;In step 1022 When cable wire is installed, connector 5 is first set on cable wire 2-1, then the lower bearing pin 10 is mounted in the second hinged seat 5-2.
In the present embodiment, by the combination of girder construction 1 and wire rope structure 2, make girder construction 1 and cable wire 2 it is vertical away from From the deck-molding more than traditional beam bridge, the torque between girder construction 1 and cable wire 2 is larger, to make girder construction 1 can resist compared with Big permanent mobile load moment of flexure.
In the present embodiment, when wire rope structure 2 is installed in 1 bottom of girder construction, without any weld job, in strut 2-2 The first mounting hole 7 and the second mounting hole 8 in upper pin 9 and lower bearing pin 10 be installed respectively, then by the upper pin 9 and it is described under Axis pin 10 is separately mounted in the first hinged seat 6 and the second hinged seat 5-2, to will be in the upper end of strut 2-2 and girder construction 1 Pre-buried steel member 4 is hinged, and the lower end of strut 2-2 is hinged with cable wire 2-1, need not be welded in installation process, will not cause steel 2 temperature distortion of Cable Structure, 2 monolithic stability of wire rope structure, quality caused by capable of effectively avoiding cable wire 2-1 or strut 2-2 deformations are hidden Suffer from, and manually the amount of devoting oneself to work is small, it is economic and practical, it is easily installed.Also, girder construction 1, cable wire 2-1 are connected with strut 2-2 It is integrated, the mechanical property of girder construction 1 can be effectively improved, make 1 stressed effect of girder construction more preferably.
In conclusion Suo Liang combined bridges construction method step of the present invention is simple, reasonable design and input construction cost Relatively low, Suo Liang combined bridge quality is easy to ensure, and construction speed is fast, using girder construction and wire rope structure be combined into Row construction makes girder construction compression and cable wire tension, reduces section and the dead weight of girder construction, while in tensioning cable wire process In, the strut compression installed on cable wire generates girder construction upward support force, reduces dead load on girder construction and causes Girder construction moment of flexure, increase span ability, it is ensured that the bridge structure of construction molding is firm;Simultaneously installation wire rope structure with Girder construction is connected as one, and improves the mechanical property of girder construction, and construction bridges quality is easy to ensure, solves tradition The problems such as concrete cracking, prestressed strand caused by prestressed strand relaxation can not be replaced in bridge, effectively improves into bridge Quality reduces difficulty of construction.
The above is only presently preferred embodiments of the present invention, is not imposed any restrictions to the present invention, every according to the present invention Technical spirit changes any simple modification, change and equivalent structure made by above example, still falls within skill of the present invention In the protection domain of art scheme.

Claims (8)

1. a kind of construction method of Suo Liang combined bridges, the Suo Liang combined bridges include multiple along bridge longitudinal extent The bridge subsection that direction is laid from front to back, the structure all same of multiple bridge subsections, each bridge subsection wrap The girder construction (1) being laid on institute's construction bridges bridge pier, the pave-load layer being paved on the girder construction (1) and setting is included to exist The wire rope structure (2) of girder construction (1) bottom;
The girder construction (1) includes the multiple row longeron laid from left to right along the transverse width direction of institute's construction bridges bridge pier (1-1), longeron (1-1) described in multiple row are laid in same level, and longeron described in each column (1-1) includes polylith along being applied The longitudinal length of work bridge pier is laid in the longeron segment (1-2) in same level, adjacent two row institute from front to back It states and is both provided with diaphragm plate (3), the longeron segment between adjacent two pieces of longeron segments (1-2) between longeron (1-1) (1-2) is armored concrete longeron, and the both ends of the longeron (1-1) are located on institute's construction bridges bridge pier, and the longeron (1-1) It is provided at both ends with anchorage;
The quantity of the wire rope structure (2) is multiple, the structure all same of multiple wire rope structures (2), each cable wire Structure (2) includes the cable wire (2-1) and be articulated with institute that setting is anchored at the bottom of longeron (1-1) and both ends on the anchorage The strut (2-2) between longeron (1-1) and cable wire (2-1) is stated, the quantity of the strut (2-2) is multiple, multiple struts The length direction of (2-2) along the bottom the longeron (1-1) is laid from front to back, and multiple struts (2-2) are in uniform It lays;
It is characterized in that, construct to institute's construction bridges along the multiple bridge subsections of bridge longitudinal extension point, and it is multiple The construction method all same of bridge subsection, wherein as follows to the work progress of bridge subsection described in any one:
Step 1: first bridge subsection construction, includes the following steps:
Step 101, girder construction construction:The installation multiple row longeron (1-1) on current two neighboring bridge pier from left to right is more Arrange that the longeron (1-1) is laid in same level and it is assemblied to form girder construction (1), the two of the longeron (1-1) End is respectively arranged on the current two neighboring construction bridges bridge pier;
Longeron described in each column (1-1) is laid in including polylith along the longitudinal length of presently described bridge pier from front to back Longeron segment (1-2) in same level, between the adjacent two row longeron (1-1) and the adjacent two pieces longeron segments Cast-in-situ steel reinforced concrete forms diaphragm plate (3) between (1-2);
Step 102, installation wire rope structure:Using manually in the bottom of longeron (1-1) installation wire rope structure (2), multiple steel The installation method all same of Cable Structure (2), wherein as follows for the installation process of any one wire rope structure (2):
Step 1021, installation strut:Strut (2-2) is installed from front to back in the bottom of longeron (1-1), makes the strut (2-2) Upper end and longeron (1-1) bottom it is hinged, until all struts (2-2) install in the wire rope structure (2);Wherein, The level interval of two neighboring strut (2-2) is identical;
Step 1022, installation cable wire:Strut (2-2) installs cable wire (2-1), makes cable wire (2-1) after installation is complete in step 1021 It is hinged with the lower end of strut (2-2);
Step 1023, tensioning cable wire simultaneously anchor:Cable wire (2-1) is after installation is complete in step 1022, and cable wire (2-1) is opened It draws and anchors, specifically include following steps:
The calculating of step I, longeron rigidity and cable wire rigidity:Apply unit uniform load on the longeron (1-1), works as cable wire The elasticity modulus of (2-1) is equal to zero, using data processing equipment and according to formulaObtain the rigid of longeron (1-1) Spend k1, and store into the memory to connect with the data processing equipment, wherein EcFor the elasticity modulus of longeron (1-1), I is The bending resistance the moment of inertia of longeron (1-1), L are the across footpath length of longeron (1-1);
On the longeron (1-1) apply unit uniform load, when longeron (1-1) bending stiffness be equal to zero, at data Manage equipment and according to formulaObtain the rigidity k of cable wire (2-1)2, and store to the memory In, wherein EsFor the elasticity modulus of cable wire (2-1), A is the cross-sectional area of cable wire (2-1), and n=f/L, f are cable wire (2-1) Sag;
Step II, mat formation before the dead load intensity that undertakes of cable wire and deck paving distribute to cable wire dead load intensity calculating:It drafts It is q at deck paving load collection degree when bridge, the dead load intensity at cable wire when bridge (2-1) is qc, using data processing equipment and root According to formulaObtain the dead load intensity q that deck paving distributes to cable wire (2-1)c1, and store to the memory In;Data processing equipment is used again and according to formulaThe dead load collection that cable wire (2-1) undertakes before being mated formation Spend qc2, and store into the memory;
Step III, mat formation before cable wire initial tension calculating:The data processing equipment is used first and according to formulaAnd the dead load intensity q that cable wire (2-1) undertakes before mating formation in conjunction with what is stored in step IIc2, steel before being mated formation The tension H of rope (2-1) horizontal direction;Then the data processing equipment is used and according to formulaAnd combine step The dead load intensity q that cable wire (2-1) undertakes before what is stored in II mat formationc2, before being mated formation vertical square of cable wire (2-1) to Power V;Finally, using the data processing equipment and according to formulaCable wire (2-1) is initial before being mated formation Tension T, and store into the memory;
Step IV, tensioning cable wire simultaneously anchor:The initial tension T of cable wire (2-1) before being mated formation according to what is obtained in step III, to described Cable wire (2-1) carries out tensioning, until when the initial tension of cable wire (2-1) reaches T, the both ends of cable wire (2-1) is anchored in described On the anchorage of the both ends longeron (1-1) setting;
Step 1021 is repeated several times to step 1023 in step V, completes the installation of multiple wire rope structures (2);
Step 103, deck paving:After being anchored to wire rope structure (2) in step V, drip of mating formation on the girder construction (1) Green concrete forms the pave-load layer, until the dead load intensity of cable wire (2-1) is by the dead load intensity q before mating formation when tensioningc2Increase To dead load intensity qc, reach and draft bridge completion state;
Step 2: next bridge subsection construction, includes the following steps:
Step 201, girder construction construction:Multiple row longeron (1-1) is installed on next two neighboring bridge pier from left to right, Longeron described in multiple row (1-1) is laid in same level and it is assemblied to form girder construction (1), the longeron (1-1) Both ends are respectively arranged on next two neighboring bridge pier, and the front side of presently described girder construction (1) with it is upper Cast-in-situ steel reinforced concrete forms diaphragm plate (3) between the rear side of one girder construction (1), makes presently described girder construction (1) the rear side splicing of front side and a upper girder construction (1) is fixed;
Step 202, installation wire rope structure:According to the method described in step 102, the longeron in current institute's construction bridges segment The bottom installation wire rope structure (2) of (1-1);
Step 203, deck paving:After after wire rope structure described in step 202 (2), installation is complete, on the girder construction (1) Protective layer of mating formation forms the pave-load layer;
Step 3: step 2 is repeated several times, until completing whole work progress of institute's construction bridges.
2. a kind of construction method of Suo Liang combined bridges described in accordance with the claim 1, it is characterised in that:Cable wire (the 2- 1) it is steel wire rope or steel strand wires, the cable wire (2-1) parabolically shape.
3. according to a kind of construction method of Suo Liang combined bridges as claimed in claim 1 or 2, it is characterised in that:The tabula Plate (3) is armoured concrete slab.
4. according to a kind of construction method of Suo Liang combined bridges as claimed in claim 1 or 2, it is characterised in that:The longeron The bottom of segment (1-2) is embedded with steel member (4), and the bottom of the steel member (4) is provided with for hinged with strut (2-2) First hinged seat (6), the strut (2-2) include rectangular portion (2-2-1) and setting the half of the both ends the rectangular portion (2-2-1) Circle portion (2-2-2), first be respectively arranged on two half-rounds (2-2-2) above the rectangular portion (2-2-1) Mounting hole (7) and below the rectangular portion (2-2-1) the second mounting hole (8), install in first mounting hole (7) Axis pin (9), the middle installation lower bearing pin (10) of second mounting hole (8), the upper pin (9) are installed in the first hinged seat (6).
5. according to a kind of construction method of Suo Liang combined bridges as claimed in claim 1 or 2, it is characterised in that:The strut (2-2) is concrete filled steel tube or shaped steel, and the cross-sectional shape of the strut (2-2) is circle.
6. a kind of construction method of Suo Liang combined bridges according to claim 4, it is characterised in that:Cable wire (the 2- 1) it is provided on and the hinged connector (5) of strut (2-2), the connector (5) includes the circumference being sleeved on cable wire (2-1) Portion (5-1) and the second hinged seat (5-2) being arranged above the circumferential part (5-1), the lower bearing pin (10) are installed on second In hinged seat (5-2).
7. a kind of construction method of Suo Liang combined bridges described in accordance with the claim 1, it is characterised in that:In a step 101 Before carrying out girder construction (1) construction, the construction of bridge pier is first carried out, and branch is built on the two neighboring bridge pier Frame, the bridge pier are laid from front to back along bridge longitudinal length.
8. a kind of construction method of Suo Liang combined bridges described in accordance with the claim 1, it is characterised in that:Pacify in step 1021 When filling strut (2-2), upper pin (9) is first installed respectively in the first mounting hole (7) and the second mounting hole (8) of strut (2-2) With lower bearing pin (10), then by the upper pin (9) be mounted on the first hinged seat (6) in;When cable wire is installed in step 1022, first exist It is set with connector (5) on cable wire (2-1), then the lower bearing pin (10) is mounted in the second hinged seat (5-2).
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CN201109968Y (en) * 2007-12-29 2008-09-03 浙江八达建设集团有限公司 Beam string structure having load alleviation
JP4914994B2 (en) * 2007-03-29 2012-04-11 オリエンタル白石株式会社 Construction method of direct-type suspension floor slab bridge
CN102808373A (en) * 2012-08-10 2012-12-05 南京工业大学 Rapidly assembled steel footbridge in truss string structure
CN103806368A (en) * 2014-03-12 2014-05-21 东南大学 Tensile string wood arch structure
CN204475665U (en) * 2014-12-17 2015-07-15 厦门科思泰建筑科技有限公司 The modified node method of beam string
CN106498838A (en) * 2016-12-28 2017-03-15 西安科技大学 A kind of arch bridge and suspension bridge combination type self-balancing bridge and its construction method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4914994B2 (en) * 2007-03-29 2012-04-11 オリエンタル白石株式会社 Construction method of direct-type suspension floor slab bridge
CN201109968Y (en) * 2007-12-29 2008-09-03 浙江八达建设集团有限公司 Beam string structure having load alleviation
CN102808373A (en) * 2012-08-10 2012-12-05 南京工业大学 Rapidly assembled steel footbridge in truss string structure
CN103806368A (en) * 2014-03-12 2014-05-21 东南大学 Tensile string wood arch structure
CN204475665U (en) * 2014-12-17 2015-07-15 厦门科思泰建筑科技有限公司 The modified node method of beam string
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