CN105603881A - Integral erecting system for large sea-crossing arch bridge and construction method thereof - Google Patents
Integral erecting system for large sea-crossing arch bridge and construction method thereof Download PDFInfo
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- CN105603881A CN105603881A CN201610102485.4A CN201610102485A CN105603881A CN 105603881 A CN105603881 A CN 105603881A CN 201610102485 A CN201610102485 A CN 201610102485A CN 105603881 A CN105603881 A CN 105603881A
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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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Abstract
The invention discloses an integral erecting system for a large sea-crossing arch bridge and a construction method thereof. The integral erecting system comprises a semi-submerged ship, a tugboat, modular temporary pier sections, modular temporary support sections, a beam bottom temporary supporting docking bayonet, an arch beam temporary stiffening support, an arch rib assembling support, an arch rib linear regulator, a main beam assembling support and a trestle, wherein the main beam assembling support and the arch rib assembling support are used for integral assembly of a whole arch beam on the bank, the modular temporary pier sections are supported by the trestle, the modular temporary support sections are supported by the semi-submerged ship, and alternate jacking support of the modular temporary pier sections and the modular temporary support sections is achieved by means of the semi-submerged ship through pressurized drainage and tidal fluctuation. According to the integral erecting system, after the whole arch beam is jacked to a designed elevation through pressurized drainage of the semi-submerged ship and tidal fluctuation, the whole arch beam is transferred to a bridge site through floating to be directly erected in place. The invention further discloses a large sea-crossing arch bridge integral erecting construction method.
Description
Technical field
The present invention relates to spanning equipment and the construction method of arch bridge, specifically a kind of integrated stand of large-scale arch bridge over straitSet up departments and unite and construction method.
Background technology
The arrangement and method for construction of domestic arch bridge over strait mainly contains at present: cable hoisting scheme, full framing scheme etc.
Erection with cableway one is to need large-tonnage cable machine, the 2nd, and need assembled two higher pylons, and arrangeKnotted rope and dorsal funciculus and earth anchor; Erection with cableway needs long-term offshore high-altitude effect, and welding waits critical process quality not allowEasy to control; Arch rib attitude is adjusted difficulty; Cable buckling and hanging system steel using amount is large, and marine corrosion amount is large, reclaimsFew, cost is high; Coastal typhoon region, need be across the typhoon cycle of 2 years, and construction risk is very big.
Full framing method construction one is to need a large amount of timbering material and bracket basis, the 2nd, and impact navigation; This methodNeed long-term offshore high-altitude operation, construction wind-engaging, rain, wave affect large, long construction period; Mainly be suitable for the depth of waterMore shallow, little across footpath and do not open the navigation or air flight require arch bridge.
Marine navigation safety, offshore construction safety and offshore construction quality etc. have become the large-scale arch bridge over strait of restrictionThe key factor of development.
Summary of the invention
One of object of the present invention is to provide a kind of integral erection system of large-scale arch bridge over strait, and this integrated stand is set up departmentsSystem assembled overall arched girder on the coast, utilizes semi-submerged ship pressure water and fluctuation tide, and overall arched girder jacking is marked to designGao Hou, transportation by driving to bridge location directly sets up and puts in place, without adopting traditional super-tonnage synchronization of jacking up equipment and interimSupport, has farthest reduced construction interim measure expense, simultaneously because overall arched girder completes assembled on the coastConstruction, avoids adverse circumstances construction at sea, has ensured construction quality, and the offshore construction activity duration is short, almostDo not affect navigation safety, largely the upper construction period shortening, saved labour, have good society andEconomic benefit.
Above-mentioned purpose of the present invention is achieved by the following technical solution: a kind of entirety of large-scale arch bridge over straitConstruction system, described arch bridge has overall arched girder, and overall arched girder comprises the arch rib of arc and the master who longitudinally arrangesBeam, is characterized in that: described integral erection system comprise semi-submerged ship, towboat, modularization Temporary Piers sections,Temporary supporting docking bayonet socket, the arched girder support of temporarily putting more energy at the bottom of modularization falsework sections, beam, assembled of arch ribFrame, arc rib alignment adjuster, girder assembling support and trestle, described girder assembling support and arch rib are assembledSupport is used for realizing on bank the integral assembling of overall arched girder, and by the overall arched girder integral pushing slippage after assembledTo the upper ship position of trestle, at the bottom of described beam, temporary supporting docking bayonet socket is to be arranged on multiple at the bottom of girder beam temporarilyBayonet socket, described modularization Temporary Piers sections support on described trestle, described modularization falsework sectionsSupport is on described semi-submerged ship, and at the bottom of described multiple beams, temporary supporting docking bayonet socket is at overall arched girder integral jacking frameIf in time, is used for docking with described modularization Temporary Piers sections and modularization falsework sections, described semi-submerged shipBy pressure water with in conjunction with fluctuation tide, realize replacing of modularization Temporary Piers sections and modularization falsework sectionsJacking is supported, by overall arched girder jacking to designed elevation, alternately support stressed in, ensure the fast of overall arched girderSpeed location, described towboat, for being connected with semi-submerged ship, is dragged to the overall arched girder on semi-submerged ship by towboatBridge location is installed, by semi-submerged ship draining, overall arched girder entirety being lifted at the incoming tide, is directly promoted overall arched girder extremelyBridge pier top, sets up arched girder in place, described by overall arched girder disposable integral and puts more energy into temporarily and support and arch rib lineShape adjuster is all arranged in overall arched girder temporarily, and described arched girder is put more energy into temporarily and supported the arch rib of overall arched girderBe connected with girder and put more energy into, the modularization falsework sections that arched girder is put more energy on support and semi-submerged ship is temporarily presentedLower relative shape, the arched girder power transmission strong point while supporting as support entirety arched girder of temporarily putting more energy into, described arch rib lineShape adjuster is for being arranged between arch rib assembling support and arch rib temporarily, for realizing the angle of arch rib and linearAdjust.
In the present invention, described overall arched girder also comprises arch rib wind brace, flexible tie-rod and suspension rod, described arch ribFor steel construction, the depth of section of arch rib to variation, is established dividing plate and ribbed stiffener along bridge in arch rib, described arch rib windSupport is multiple tracks, and arch rib wind brace and arch rib are rigidly connected, and described arch rib and arch rib wind brace form the master of overall arched girderArch, described girder is steel construction, and girder doubles as rigid tie bar, and girder and arch rib are connected to a fixed at arch springing place,Described suspension rod is many bars that vertically fall to hang between girder and arch rib, the spacing between adjacent suspension rod be 8m～16m, girder is hung on arch rib by suspension rod; Described flexible tie-rod is for to be longitudinally arranged on girder along girder length directionInterior multiply, flexible tie-rod is anchored at the junction of girder and arch rib, and the water of horizontal pull with opposing arch rib is providedHorizontal sliding power.
In the present invention, described towboat is many, and many towboat composition towboat groups, for described semi-submerged ship providesPower, location and anchoring.
In the present invention, described modularization Temporary Piers sections is identical with modularization falsework sections structure, isAt least one joint box truss being formed by the steel stull of putting more energy into of the many vertical steel thin-walled columns that arrange and horizontally setSystem, and be provided with the bowl button columnar structure bayonet socket that Open Side Down in the bottom of box truss system, described steel is thinThe upper end of pilaster is provided with ribbed stiffener and billet, is provided with many groups high-strength bolt hole in billet simultaneously,Can adopt as required high-strength bolt to being positioned at each joint modularization Temporary Piers sections or the modularization of upper and lower positionFalsework sections carries out the fixing serial connection of multi-segmental.
In the present invention, at the bottom of described beam, temporary supporting docking bayonet socket is horn-like, alternately support stressed in, protectDemonstrate,prove the strong point of overall arched girder and described modularization falsework sections or modularization falsework sections standard fastDetermine position.
In the present invention, described arched girder is put more energy into temporarily and is supported for by the steel thin-walled column of many oblique settings and obliqueThe overall girder system of the variable cross-section that is welded of the steel stull of putting more energy into arranging, described arched girder is put more energy into temporarily and is supportedBottom is welded on girder temporarily, top and arch rib welding mutually temporarily, and described arched girder is put more energy into temporarily and is supported instituteThe overall arched girder of stating connects temporarily and puts more energy into, and guarantees the stressed of overall arched girder and distortion in jacking, transportation by driving processMeet design requirement.
In the present invention, described arch rib assembling support is many groups that are welded by steel thin-walled column and the steel stull of putting more energy intoSteel truss system, organizes arch rib assembling support more and forms transverse girder between arch rib system.
In the present invention, described arc rib alignment adjuster comprises by jack system and regulates steel plate, described thousandJin top system is vertically arranged between described arch rib assembling support and arch rib, for realizing arch rib angle and linearAdjust, described adjusting steel plate is horizontally installed between described jack system and arch rib assembling support.
In the present invention, in arch rib assembling support corresponding position, by being positioned at, bottom is vertical to be arranged described girder assembling supportSteel pipe pile foundation, be positioned at the reinforced concrete pile cap beam of middle part horizontally set and be positioned at that top is vertical to be arrangedSteel pipe support composition, in non-arch rib assembling support corresponding position by the concrete cushion of horizontally set and vertical plug-in mountingSteel pipe support composition in concrete cushion.
In the present invention, described trestle is made up of steel pipe pile foundation and reinforced concrete pile cap beam, pre-above apron pieceBury steel plate and lay tetrafluoro slide plate, leave the stressed bayonet socket of jack pushing tow, for overall arched girder is from assembled position pushing towSlippage provides slideway to ship position on trestle, and as modularization Temporary Piers basis.
Two of object of the present invention is to provide a kind of integral erection construction method of large-scale arch bridge over strait, this construction partyMethod is assembled overall arched girder on the coast, adopt jack by overall arched girder from assembled position thrusting slip to trestleShip position, utilizes semi-submerged ship pressure water and fluctuation tide, and by overall arched girder jacking, after designed elevation, transportation by driving is to bridgePosition is directly set up and is put in place.
This purpose of the present invention is achieved by the following technical solution: adopt above-mentioned arch bridge large-scale over straitThe integral erection system construction method of carrying out, it is characterized in that, this construction method comprises the steps:
Step 1: the assembled levelling of the land sclerosis in bank, girder assembling support and the foundation construction of arch rib assembling support, slidingMove track and Conveyor belt construction, the construction of girder assembling support; Symmetrical assembled girder joint on girder assembling supportSection, forms overall girder; Arch rib erection assembling support on girder, installs the arched girder support of temporarily putting more energy into,Symmetrical assembled rib-lifting section on arch rib assembling support, adjusts to design by arc rib alignment adjuster by arch rib linear,Arch rib erection wind brace, the main arch of assembled formation entirety arched girder; The permanent flexible tie-rod of stretch-draw part, installs suspension rod alsoStretch-draw, construction forms overall arched girder;
Step 2: the symmetrical arch rib assembling support of removing, only retain arched girder supports of temporarily putting more energy into, symmetrically remove girder spellingDress support, arched girder becomes entirety, and bearing place is stressed; Adopt hydraulic jack by overall arched girder from assembled position pushing towSlippage is to the upper ship position of trestle;
Step 3: by position the first segment modularization falsework segment lifting on semi-submerged ship, on trestleOne joint modularization Temporary Piers sections is prepared in place; When low tide, the dive of semi-submerged ship setting-out, twists at the bottom of beam; Flood tideTime, at the bottom of on semi-submerged ship, beam is inserted at first segment modularization falsework sections top, temporary supporting docks bayonet socket, and half divesShip lifts overall arched girder in conjunction with draining, rapidly first segment modularization Temporary Piers sections on trestle is hung in to girder and props upSeat place; When ebb tide, semi-submerged ship setting-out, overall arched girder drops on first segment modularization Temporary Piers sections, entirety archBeam completes integral jacking height for the first time;
Step 4: by position the second section modularization falsework segment lifting on semi-submerged ship, on trestle secondJoint modularization Temporary Piers sections is prepared in place; When low tide, the dive of semi-submerged ship setting-out, twists at the bottom of beam; At the incoming tide,At the bottom of on semi-submerged ship, beam is inserted at second section modularization falsework sections top, temporary supporting docks bayonet socket, semi-submerged ship knotClose draining overall arched girder is lifted, rapidly second section modularization Temporary Piers sections on trestle is hung in and tipped upside down onOn one joint modularization Temporary Piers sections, when ebb tide, semi-submerged ship setting-out, overall arched girder drops on second section modularization and facesTime pier sections on, overall arched girder completes integral jacking height for the second time;
Step 5: continue circulation jacking according to step 4, until bridge floor reaches designed elevation; When low tide, half divesThe dive of ship setting-out, twists at the bottom of beam; When high tide level, overall arched girder is lifted in semi-submerged ship draining, and semi-submerged ship twists out and facesTime trestle position, tension wind cable, prepares transportation by driving;
Step 6: in wind, less period of wave, under the traction of many towboats, semi-submerged ship by overall arched girder transportation by driving extremelyNear bridge location;
Step 7: at the incoming tide, overall arched girder is lifted in semi-submerged ship draining, twists into bridge location, directly promotes overall arched girderTo bridge pier top; When ebb tide, semi-submerged ship setting-out, bridge pad slowly contacts with bridge pier, removes rapidly entirety archBeam is connected with the soft or hard of ship, and semi-submerged ship leaves, and completes setting up of overall arched girder;
Step 8: the support of temporarily putting more energy into of the arched girder of removing overall arched girder, adjust the stretching force of flexible tie-rod and suspension rod,Construction bridge deck, Cheng Qiao is open to traffic.
Compared with prior art, the present invention has following remarkable result:
1. arch rib of the present invention and girder sections are all prefabricated in the factory, and on bank, bridge location place, building-site spelling becomes wholeBody, has avoided the impact of wind, wave, can application property and construction quality be all greatly increased.
2. overall arched girder jacking of the present invention is floating chase erected, has at utmost reduced traditional arch rib and main girder construction methodIn work high above the ground, improved the security of construction.
3. arched girder of the present invention is to be all assembled on the coast entirety, and bridge location place erection at sea time history is shorter, under bridgeNavigation almost without impact.
4. the present invention creatively utilizes semi-submerged ship pressure water and fluctuation tide, and arched girder jacking is after designed elevation, floatingBeing transported to bridge location directly sets up and puts in place; The present invention adopts the simplest buoyancy and morning and evening tides, realizes super-tonnage arch bridgeJacking, without adopting traditional super-tonnage synchronization of jacking up equipment and falsework thereof, has reduced construction the largelyst and has facedTime measure cost, obtain significant economic benefit; There are more ten thousand tons and tens thousand of tonnes of semi-submerged ships both at home and abroad, thisIntegral erection system and the construction method thereof of bright large-scale arch bridge over strait, in theory can jacking and set up ten thousand tons and numberThe bridge structure of ton, greatly promotes bridge development.
6. the present invention's entirety arched girder jacking, has shortened the construction period, and accelerating construction progress, saves labour, ensuresConstruction quality under adverse circumstances, severe offshore construction environment and with the obvious advantage on frequent navigation channel of opening the navigation or air flight,Reliably, environmental protection, there is good society and economic benefit.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the construction schematic diagram of integral erection system of the present invention at bank spelling girder, arch rib;
Figure 1A is that the A of Fig. 1 is to zoomed-in view;
Figure 1B is that the B of Fig. 1 is to zoomed-in view;
Fig. 2 is that integral erection system of the present invention is prepared jacking at the bottom of the dive of semi-submerged ship setting-out is twisted into beam in the time of low tideConstruction schematic diagram;
To be integral erection system of the present invention lift and hang in module in semi-submerged ship draining at the incoming tide by overall arched girder to Fig. 3Change the construction schematic diagram of Temporary Piers;
It is interim that Fig. 4 is that overall arched girder is dropped on modularization by integral erection system of the present invention semi-submerged ship setting-out in the time of ebb tideConstruction schematic diagram on pier;
Fig. 5 integral erection system of the present invention is that middle semi-submerged ship is by overall arched girder transportation by driving construction schematic diagram;
To be integral erection system of the present invention lift overall arched girder above bridge pier in semi-submerged ship draining at the incoming tide Fig. 6Construction schematic diagram;
Fig. 7 is the knot of modularization Temporary Piers sections and modularization falsework sections in integral erection system of the present inventionStructure schematic diagram;
The overall structure schematic diagram of the Cheng Qiao of the arch bridge that Fig. 8 sets up for integral erection system of the present invention.
Description of reference numerals
1, overall arched girder; 11, arch rib; 12, arch rib wind brace; 13, girder; 14, flexible tie-rod;15, suspension rod; 2, semi-submerged ship; 3, towboat; 4, modularization Temporary Piers sections; 41, steel thin-walled column;42, the steel stull of putting more energy into; 43, bowl button columnar structure bayonet socket; 44, ribbed stiffener; 45, billet;46, high-strength bolt; 5, modularization falsework sections; 6, temporary supporting docking bayonet socket at the bottom of beam;7, the arched girder support of temporarily putting more energy into; 71, steel thin-walled column; 72, the steel stull of putting more energy into; 8, arch rib assembling support;9, arc rib alignment adjuster; 91, jack system; 92, regulate steel plate; 10, girder assembling support;10a, steel pipe pile foundation; 10b, reinforced concrete pile cap beam; 10c, steel pipe support; 10d, concrete cushion;100, trestle; 100a, Conveyor belt; 101, main pier; 102, cushion cap; 103, pile foundation;104, wind cable.
Detailed description of the invention
The integral erection system of a kind of large-scale arch bridge over strait as shown in Figures 1 to 8, wherein, arch bridge has wholeBody arched girder 1, overall arched girder 1 comprises the arch rib 11 of arc, girder 13, the arch rib wind brace 12, soft of longitudinally settingProperty tie-rod 14 and suspension rod 15, arch rib 11 is steel construction, the depth of section of arch rib 11 along bridge to variation, arch rib 11Inside establish dividing plate and ribbed stiffener, for Integral lifting transportation by driving provides enough perpendicular and torsional rigidities in length and breadth, arch rib wind brace 12For multiple tracks, arch rib wind brace 12 is rigidly connected with arch rib 11, ensure work progress and become bridge construction stability andWind resistance, arch rib 11 and arch rib wind brace 12 form the main arch of overall arched girder 1, and girder 13 is steel construction, mainBeam 13 doubles as rigid tie bar, can receiving portion divide axial tension and moment of flexure, and girder 13 and arch rib 11 are at arch springing placeBe connected to a fixed, suspension rod 15 is for vertically falling to hang over many bars between girder 13 and arch rib 11, adjacent suspension rod 15Between spacing be 12m, the spacing between adjacent suspension rod 15 between 8m～16m all can, suspension rod 15 toolsThere is the Suo Genghuan of tune function, thereby ensure that each construction stage is by adjusting suspension rod 15 internal force adjustment main arch and girders 13Internal force, girder 13 is hung on arch rib 11 by suspension rod 15; Flexible tie-rod 14 is along girder 13 length directionsLongitudinally be arranged on the multiply in girder 13, flexible tie-rod 14 is anchored at the junction of girder 13 and arch rib 11,Provide horizontal pull with opposing arch rib 11 horizontal thrust, in work progress according to stressed can by thigh stretch-draw with adjustWhole main arch and girder 13 internal force.
Integral erection system in the present embodiment comprises semi-submerged ship 2, towboat 3, modularization Temporary Piers sections 4, mouldAt the bottom of blocking falsework sections 5, beam, temporary supporting docking bayonet socket 6, arched girder are put more energy into temporarily and are supported 7, and arch rib is assembledSupport 8, arc rib alignment adjuster 9, girder assembling support 10 and trestle 100.
The length direction that longitudinally refers to girder 13 in the present embodiment, is also the length direction of arch bridge, laterally refers toWith the perpendicular direction of the length direction of girder 13, it is also the width of arch bridge.
Girder assembling support 10 and arch rib assembling support 8 be for realize the integral assembling of overall arched girder 1 on bank,And overall arched girder 1 integral pushing after assembled is slid onto to the upper ship position of trestle 100, temporary supporting pair at the bottom of beamConnect bayonet socket 6 for be arranged on the multiple bayonet sockets at the bottom of girder 13 beams temporarily, modularization Temporary Piers sections 4 supports are at trestleOn 100, modularization falsework sections 5 supports are on semi-submerged ship 2, and at the bottom of multiple beams, temporary supporting docks bayonet socket 6In the time that overall arched girder 1 integral jacking sets up for modularization Temporary Piers sections 4 and modularization falsework sections 5Docking, semi-submerged ship 2, by pressure water with in conjunction with fluctuation tide, is realized modularization Temporary Piers sections 4 and modularization and is facedTime bracket subsection 5 alternately jacking support, by overall arched girder 1 jacking to designed elevation, alternately support stressedIn, ensureing the quick location of overall arched girder 1, towboat 3 is many, many towboats composition towboat groups are half to diveShip 2 provides power, location and anchoring, and towboat 3, for being connected with semi-submerged ship 2, will partly be dived by towboat 3Overall arched girder 1 on ship 2 is dragged to installation bridge location, is passing through at the incoming tide semi-submerged ship 2 drainings by whole overall arched girder 1Body lifts, and directly promotes overall arched girder 1 to bridge pier top, overall arched girder 1 disposable integral is set up in place,Arched girder put more energy into temporarily support 7 and arc rib alignment adjuster 9 be all arranged in overall arched girder 1 temporarily, arched girder is interimThe support 7 of putting more energy into is connected the arch rib of overall arched girder 1 11 put more energy into girder 13, and arched girder is put more energy into temporarily and supported 7Be relative shape up and down with the modularization falsework sections 5 on semi-submerged ship 2, arched girder is put more energy into temporarily and is supported 7 conductsPower transmission strong point when support entirety arched girder 1, arc rib alignment adjuster 9 is for be arranged on assembled of arch rib temporarilyBetween frame 8 and arch rib 11, for realizing angle and the linear adjustment of arch rib 11.
Semi-submerged ship 2 in the present embodiment is keys of arched girder jacking, overall transportation by driving, integral jacking, has automaticallyThe adjustment function of Ballast Water, can load by dive certain depth; Semi-submerged ship 2 can according to the weight of overall arched girder 1,The size of height of C.G., bridge floor designed elevation, falsework place power, the quantity of falsework and position, trestlePlace's depth of water etc. is calculated selected; The every square meter bearing capacity in deck of semi-submerged ship 2, loading tonnage, captain, the beam, typeDeeply, maximum heavy dark, the towage speed of a ship or plane and designed draft (towing voyage) etc. are main control parameters.
In the present embodiment, modularization Temporary Piers sections 4 is identical with modularization falsework sections 5 structures, isAt least one joint case being formed by the steel stull 42 of putting more energy into of the many vertical steel thin-walled columns 41 that arrange and horizontally setShape girder system, and be provided with the bowl button columnar structure bayonet socket 43 that Open Side Down in the bottom of box truss system,The object of removing to reach rapid alignment, quick-assembling and fast dismantling, the upper end of steel thin-walled column 41 is provided with puts more energy intoRib 44 and billet 45 are put more energy into steel thin-walled column end, prevent local pressure flexing, simultaneously billetIn 45, be provided with many groups high-strength bolt holes, can adopt according to actual needs high-strength bolt 46 to being positioned at,Each joint modularization Temporary Piers sections 4 of upper/lower positions or modularization falsework sections 5 carry out the fixing string of multi-segmentalConnect, as a joint, two joints, three joints or more piece etc.
At the bottom of beam in the present embodiment, temporary supporting docking bayonet socket 6 is horn-like, formed by billet and the steel plate of putting more energy into,Weld respectively under the beam that aboard ship falsework and trestle Temporary Piers are corresponding, alternately support stressed in, ensureThe strong point of entirety arched girder 1 and modularization falsework sections 4 or modularization falsework sections 5 are quick and preciselyLocation.
Arched girder in the present embodiment is put more energy into temporarily and is supported the 7 steel thin-walled columns 71 of many oblique settings and oblique of serving as reasonsThe overall girder system of the variable cross-section that is welded of the steel stull 72 of putting more energy into arranging, arched girder is put more energy into temporarily and is supported 7Bottom is welded on girder 13 temporarily, and top and arch rib 11 be welding mutually temporarily, and arched girder is put more energy into support 7 temporarily willEntirety arched girder 1 connects temporarily and puts more energy into, and guarantees the stressed of overall arched girder 1 and distortion in jacking, transportation by driving processMeeting design requirement, is the key of guaranteeing in jacking, transportation by driving process that arched girder is stressed and distortion meets the demands.
The many group steel of arch rib assembling support 8 in the present embodiment for being welded by steel thin-walled column and the steel stull of putting more energy intoGirder system, organizes arch rib assembling support 8 more and forms transverse girder between arch rib system.
Arc rib alignment adjuster 9 in the present embodiment comprises by jack system 91 and regulates steel plate 92, jackSystem 91 is vertically arranged between arch rib assembling support 8 and arch rib 11, for realizing arch rib angle and linear tuneWhole, regulate steel plate 92 to be horizontally installed between jack system 91 and arch rib assembling support 8, can realize arch rib11 angles and linear adjustment.
In the present embodiment, in arch rib assembling support 8 corresponding positions, by being positioned at, bottom is vertical to be arranged girder assembling support 10Steel pipe pile foundation 10a, be positioned at the reinforced concrete pile cap beam 10b of middle part horizontally set and to be positioned at top verticalThe steel pipe support 10c composition arranging, the concrete cushion in non-arch rib assembling support 8 corresponding positions by horizontally set10d and the steel pipe support 10c being vertically inserted in concrete cushion 10d form.
In the present embodiment, trestle 100 is made up of steel pipe pile foundation and reinforced concrete pile cap beam, steel pipe pile foundationThat is to say Conveyor belt 100a, pre-embedded steel slab lay tetrafluoro slide plate above apron piece, leaves jack pushing tow and is subject toPower bayonet socket, for overall arched girder from assembled position thrusting slip to trestle ship position slideway is provided, and as moduleChange Temporary Piers basis.
In the present embodiment, the span of arch bridge is 286m, and also can be used for span is the arch large-scale over strait of 100m～500mBridge.
The integral erection construction method of above-mentioned large-scale arch bridge over strait, comprises the steps:
Step 1: as shown in Figure 1, the assembled levelling of the land sclerosis on bank, girder assembling support 10 and arch rib are spelled8 foundation constructions of dress support, sliding rail and Conveyor belt construction, girder assembling support 10 is constructed; Spell at girderSymmetrical assembled girder sections on dress support 10, forms overall girder 13; On girder 13, arch rib erection is assembledSupport 8, installation arched girder is put more energy into temporarily and is supported 7, and on arch rib assembling support 8, symmetrical assembled rib-lifting section, passes throughIt is linear that arch rib 11 is adjusted to design by arc rib alignment adjuster 9, arch rib erection wind brace 12, assembled formation entirety archThe main arch of beam 1; The permanent flexible tie-rod 14 of stretch-draw part, installs suspension rod 15 stretch-draw, and construction forms overall arched girder1；
Step 2: the symmetrical arch rib assembling support 8 of removing, only retain arched girder and put more energy into temporarily and support 7, symmetrical remove mainBeam assembling support 10, arched girder becomes entirety, and bearing place is stressed; Adopt hydraulic jack by overall arched girder 1 from assembledPosition thrusting slip is to the upper ship position of trestle 100;
As shown in Figures 2 to 4, by semi-submerged ship 2 pressure water and in conjunction with fluctuation tide, realize modularization and prop up temporarilyThe alternately jacking of frame sections 5 and modularization Temporary Piers sections 4 is supported, by overall arched girder 1 jacking to designed elevation,Concrete steps are as follows:
Step 3: the first segment modularization falsework sections 5 on semi-submerged ship 2 is lifted in position, trestleFirst segment modularization Temporary Piers sections 4 on 100 is prepared in place; When low tide, semi-submerged ship 2 setting-out dives, strandAt the bottom of entering beam; At the incoming tide, at the bottom of on semi-submerged ship 2, beam is inserted at first segment modularization falsework sections 5 tops, prop up temporarilySupport docking bayonet socket 6, semi-submerged ship 2 lifts overall arched girder 1 in conjunction with draining, rapidly by first segment mould on trestle 100Blocking Temporary Piers sections 4 hangs in girder bearing place; When ebb tide, semi-submerged ship 2 setting-out, overall arched girder 1 drops onOn one joint modularization Temporary Piers sections 4, overall arched girder 1 completes integral jacking height for the first time;
Step 4: the second section modularization falsework sections 5 on semi-submerged ship 2 is lifted in position, trestleOn 100, second section modularization Temporary Piers sections 4 is prepared in place; When low tide, semi-submerged ship 2 setting-out dives, twist intoAt the bottom of beam; At the incoming tide, on semi-submerged ship 2, temporary supporting at the bottom of beams is inserted at second section modularization falsework sections 5 topsDocking bayonet socket 6, semi-submerged ship 2 lifts overall arched girder 1 in conjunction with draining, rapidly by second section module on trestle 100Change Temporary Piers sections 4 and hang in and tip upside down on first segment modularization Temporary Piers sections 4, when ebb tide, semi-submerged ship 2Setting-out, overall arched girder 1 drops on second section modularization Temporary Piers sections 4, and overall arched girder 1 completes whole for the second timeBody top lifting height;
Step 5: continue circulation jacking according to step 4, until bridge floor reaches designed elevation; When low tide, semi-submerged ship 2 is pressedDive under water, twist at the bottom of beam; When high tide level, overall arched girder 1 is lifted in semi-submerged ship 2 drainings, and semi-submerged ship 2 twists out temporarilyTrestle position, tension wind cable 104, prepares transportation by driving; Step 6: in wind, less period of wave, drag at manyUnder the traction of ship 3, semi-submerged ship 2 by overall arched girder 1 transportation by driving near bridge location, as shown in Figure 5;
Step 7: at the incoming tide, overall arched girder 1 is lifted in semi-submerged ship 2 drainings, twists into bridge location, directly promotes entirety archBeam 1 is to bridge pier top; When ebb tide, semi-submerged ship 2 setting-out, bridge pad slowly contacts with bridge pier, removes rapidly wholeBody arched girder 1 is connected with the soft or hard of ship, and semi-submerged ship 2 leaves, and completes setting up of overall arched girder 1, as shown in Figure 6;
Step 8: the arched girder of removing overall arched girder 1 is put more energy into temporarily and supported 7, adjust flexible tie-rod 14 and suspension rod 15Pulling force, construction bridge deck, Cheng Qiao is open to traffic, and the one-tenth bridge overall structure schematic diagram of arch bridge as shown in Figure 8, comprises entiretyArched girder 1, main pier 101, cushion cap 102, pile foundation 103.
The above embodiment of the present invention is not limiting the scope of the present invention, and embodiments of the present invention are notBe limited to this, according to foregoing of the present invention, according to ordinary skill knowledge and the customary means of this area, notDepart under the above-mentioned basic fundamental thought of the present invention prerequisite, other various ways that said structure of the present invention is madeAmendment, replacement or change, within all dropping on protection scope of the present invention.
Claims (10)
1. an integral erection system for large-scale arch bridge over strait, described arch bridge has overall arched girder (1), overall arched girder(1) comprise the arch rib (11) of arc and the girder (13) longitudinally arranging, it is characterized in that: described integrated stand is set up departmentsAt the bottom of turnkey is drawn together semi-submerged ship (2), towboat (3), modularization Temporary Piers sections (4), modularization falsework sections (5), beamThe support (7) of temporarily putting more energy into of temporary supporting docking bayonet socket (6), arched girder, arch rib assembling support (8), arc rib alignment adjuster(9), girder assembling support (10) and trestle (100), described girder assembling support (10) and arch rib assembling support (8)For realize the integral assembling of overall arched girder (1) on bank, and by overall arched girder (1) the integral pushing slippage after assembledTo the upper ship position of trestle (100), at the bottom of described beam, temporary supporting docking bayonet socket (6) is for be arranged on girder (13) temporarilyMultiple bayonet sockets at the bottom of beam, described modularization Temporary Piers sections (4) support is upper at described trestle (100), described mouldBlocking falsework sections (5) support is upper at described semi-submerged ship (2), temporary supporting docking bayonet socket at the bottom of described multiple beams(6) in the time that overall arched girder (1) integral jacking sets up for facing with described modularization Temporary Piers sections (4) and modularizationTime bracket subsection (5) docking, described semi-submerged ship (2), by pressure water with in conjunction with fluctuation tide, is realized modularization interimThe alternately jacking of pier sections (4) and modularization falsework sections (5) is supported, and overall arched girder (1) jacking to design is markedHeight, alternately support stressed in, ensure the quick location of overall arched girder (1), described towboat (3) for half diveShip (2) is connected, and by towboat (3), the overall arched girder (1) on semi-submerged ship (2) is dragged to installation bridge location, logical at the incoming tideCross semi-submerged ship (2) draining overall arched girder (1) entirety is lifted, directly promote overall arched girder (1) to bridge pier top, by wholeBody arched girder (1) disposable integral sets up arched girder in place, described put more energy into support (7) and arc rib alignment adjuster (9) temporarilyAll be arranged in overall arched girder (1), described arched girder is put more energy into support (7) by the arch rib of overall arched girder (1) (11) temporarily temporarilyBe connected and put more energy into girder (13), the arched girder modularization falsework on support (7) and semi-submerged ship (2) of temporarily putting more energy intoSections (5) is up and down shape relatively, the arched girder power transmission support of supports (7) during as support entirety arched girder (1) of temporarily putting more energy intoPoint, described arc rib alignment adjuster (9) is for be arranged between arch rib assembling support (8) and arch rib (11) temporarily,Be used for realizing angle and the linear adjustment of arch rib (11).
2. the integral erection system of large-scale arch bridge over strait according to claim 1, is characterized in that: described inOverall arched girder (1) also comprise arch rib wind brace (12), flexible tie-rod (14) and suspension rod (15), described arch rib (11) is steelStructure, the depth of section of arch rib (11) is along bridge to variation, and arch rib is established dividing plate and ribbed stiffener in (11), described arch ribWind brace (12) is multiple tracks, and arch rib wind brace (12) is rigidly connected with arch rib (11), described arch rib (11) and arch rib wind brace (12)Form the main arch of overall arched girder (1), described girder (13) is steel construction, and girder (13) doubles as rigid tie bar, girder(13) be connected to a fixed at arch springing place with arch rib (11), described suspension rod (15) is for vertically falling to hang over girder (13) and arch rib (11)Between many bars, the spacing between adjacent suspension rod (15) is 8m～16m, girder (13) is hung in by suspension rod (15)On arch rib (11); Described flexible tie-rod (14) is for being longitudinally arranged on many in girder (13) along girder (13) length directionStrand, flexible tie-rod (14) is anchored at the junction of girder (13) and arch rib (11), provides horizontal pull with opposing arch rib (11)Horizontal thrust.
3. the integral erection system of large-scale arch bridge over strait according to claim 2, is characterized in that: described inTowboat (3) be many, many towboats composition towboat groups, for described semi-submerged ship (2) provides power, location and anchorGu.
4. the integral erection system of large-scale arch bridge over strait according to claim 2, is characterized in that: described inModularization Temporary Piers sections (4) identical with modularization falsework sections (5) structure, many vertical settings of all serving as reasonsSteel thin-walled column (41) and at least one joint box truss system of steel stull (42) composition of putting more energy into of horizontally set, andBe provided with the bowl button columnar structure bayonet socket (43) that Open Side Down in the bottom of box truss system, described steel thin-walled column(41) upper end is provided with ribbed stiffener (44) and billet (45), is provided with many groups high-strength in billet (45) simultaneouslyBolt hole, can adopt high-strength bolt (46) to being positioned at each joint modularization Temporary Piers joint of upper and lower position as requiredSection (4) or modularization falsework sections (5) carry out the fixing serial connection of multi-segmental.
5. the integral erection system of large-scale arch bridge over strait according to claim 2 is characterized in that: describedAt the bottom of beam, temporary supporting docking bayonet socket (6) is horn-like, alternately support stressed in, ensure the support of overall arched girder (1)Point is quick and precisely located with described modularization falsework sections (4) or modularization falsework sections (5).
6. the integral erection system of large-scale arch bridge over strait according to claim 2, is characterized in that: described inArched girder put more energy into support (7) serve as reasons the steel thin-walled column (71) of many oblique settings and the steel of putting more energy into of oblique setting temporarilyThe overall girder system of the variable cross-section that stull (72) is welded, temporarily the put more energy into bottom of support (7) of described arched girder is interimBe welded on girder (13) upper, top and arch rib (11) welding mutually temporarily, described arched girder is put more energy into support (7) by institute temporarilyThe overall arched girder (1) of stating connects temporarily and puts more energy into, in jacking, transportation by driving process, guarantee the stressed of overall arched girder (1) andDistortion meets design requirement.
7. the integral erection system of large-scale arch bridge over strait according to claim 2, is characterized in that: described inArch rib assembling support (8) be many groups steel truss system of being welded by steel thin-walled column and the steel stull of putting more energy into, many groupsArch rib assembling support (8) forms transverse girder between arch rib system.
8. the integral erection system of large-scale arch bridge over strait according to claim 2, is characterized in that: describedArc rib alignment adjuster (9) comprises by jack system (91) and regulates steel plate (92), described jack system (91)Vertically be arranged between described arch rib assembling support (8) and arch rib (11), for realizing arch rib angle and linear tuneWhole, described adjusting steel plate (92) be horizontally installed on described jack system (91) and arch rib assembling support (8) itBetween.
9. the integral erection system of large-scale arch bridge over strait according to claim 2, is characterized in that: described inGirder assembling support (10) in arch rib assembling support (8) corresponding position by being positioned at the vertical steel pipe pile foundation arranging in bottom(10a), be positioned at the reinforced concrete pile cap beam (10b) of middle part horizontally set and be positioned at the vertical steel pipe arranging in topSupport (10c) composition, in non-arch rib assembling support (8) corresponding position by the concrete cushion (10d) of horizontally set and perpendicularTo steel pipe support (10c) composition being inserted in concrete cushion (10d).
10. what the integral erection system of the large-scale arch bridge over strait described in employing claim 2 to 9 any one was carried out executesWork method, is characterized in that, this construction method comprises the steps:
Step (1): the assembled levelling of the land sclerosis in bank, girder assembling support (10) and arch rib assembling support (8) basisConstruction, sliding rail and Conveyor belt construction, girder assembling support (10) construction; On girder assembling support (10)Symmetrical assembled girder sections, forms overall girder (13); In the upper arch rib erection assembling support (8) of girder (13), peaceSupports (7) of temporarily putting more energy into of dress arched girder, goes up symmetrical assembled rib-lifting section at arch rib assembling support (8), passes through arc rib alignmentIt is linear that arch rib (11) is adjusted to design by adjuster (9), arch rib erection wind brace (12), the overall arched girder of assembled formation (1)Main arch; The permanent flexible tie-rod of stretch-draw part (14), installs suspension rod (15) stretch-draw, and construction forms overall arched girder (1);
Step (2): the symmetrical arch rib assembling support (8) of removing, only retains arched girder supports (7) of temporarily putting more energy into, symmetrical dismountingGirder assembling support (10), arched girder becomes entirety, and bearing place is stressed; Adopt hydraulic jack by overall arched girder (1) from spellHolding position thrusting slip is to the upper ship position of trestle (100);
Step (3): the first segment modularization falsework sections (5) on semi-submerged ship (2) is lifted in position, trestle(100) the first segment modularization Temporary Piers sections (4) on is prepared in place; When low tide, semi-submerged ship (2) setting-out dive,Twist at the bottom of beam; At the incoming tide, interim at the bottom of the upper first segment modularization falsework sections (5) of semi-submerged ship (2) top insertion beamSupport docking bayonet socket (6), semi-submerged ship (2) lifts overall arched girder (1) in conjunction with draining, rapidly by trestle (100) upper firstJoint modularization Temporary Piers sections (4) hangs in girder bearing place; When ebb tide, semi-submerged ship (2) setting-out, overall arched girder (1) fallsUpper at first segment modularization Temporary Piers sections (4), overall arched girder (1) completes integral jacking height for the first time;
Step (4): the second section modularization falsework sections (5) on semi-submerged ship (2) is lifted in position, trestle(100) upper second section modularization Temporary Piers sections (4) is prepared in place; When low tide, semi-submerged ship (2) setting-out dive, strandAt the bottom of entering beam; At the incoming tide, at the bottom of beam is inserted at the upper second section modularization falsework sections (5) of semi-submerged ship (2) top, prop up temporarilySupport docking bayonet socket (6), semi-submerged ship (2) lifts overall arched girder (1) in conjunction with draining, rapidly by upper trestle (100) second sectionIt is upper that modularization Temporary Piers sections (4) hangs in and tip upside down on first segment modularization Temporary Piers sections (4), and when ebb tide, half divesShip (2) setting-out, it is upper that overall arched girder (1) drops on second section modularization Temporary Piers sections (4), and overall arched girder (1) completes secondInferior integral jacking height;
Step (5): continue circulation jacking according to step (4), until bridge floor reaches designed elevation; When low tide, halfLatent ship (2) setting-out dive, twists at the bottom of beam; When high tide level, overall arched girder (1) is lifted in semi-submerged ship (2) draining, and half divesShip (2) twists out temporary trestle bridge position, and tension wind cable (104) is prepared transportation by driving;
Step (6): in wind, less period of wave, under the traction of many towboats (3), semi-submerged ship (2) is by overall arched girder(1) transportation by driving is near bridge location;
Step (7): at the incoming tide, overall arched girder (1) is lifted in semi-submerged ship (2) draining, twists into bridge location, directly promotes wholeBody arched girder (1) is to bridge pier top; When ebb tide, semi-submerged ship (2) setting-out, bridge pad slowly contacts with bridge pier, rapidlyRemove overall arched girder (1) and be connected with the soft or hard of ship, semi-submerged ship (2) leaves, and completes setting up of overall arched girder (1);
Step (8): the support (7) of temporarily putting more energy into of the arched girder of removing overall arched girder (1), adjust flexible tie-rod (14) and suspension rod(15) stretching force, construction bridge deck, Cheng Qiao is open to traffic.
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| CN113789712A (en) * | 2021-09-17 | 2021-12-14 | 上海建工一建集团有限公司 | Longitudinal beam and arch rib forming control method of steel arch bridge |
| CN113789712B (en) * | 2021-09-17 | 2023-10-13 | 上海建工一建集团有限公司 | Longitudinal beam and arch rib forming control method of steel arch bridge |
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| CN114622488B (en) * | 2022-03-01 | 2024-03-01 | 中铁广州工程局集团有限公司 | Section beam water lifting station and section beam lifting method |
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