CN114476962A - Steel-concrete composite beam erecting system based on bridge floor crane - Google Patents
Steel-concrete composite beam erecting system based on bridge floor crane Download PDFInfo
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- CN114476962A CN114476962A CN202210071756.XA CN202210071756A CN114476962A CN 114476962 A CN114476962 A CN 114476962A CN 202210071756 A CN202210071756 A CN 202210071756A CN 114476962 A CN114476962 A CN 114476962A
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- steel
- construction platform
- crane
- upper longitudinal
- concrete composite
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C17/00—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports
- B66C17/06—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports specially adapted for particular purposes, e.g. in foundries, forges; combined with auxiliary apparatus serving particular purposes
- B66C17/26—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports specially adapted for particular purposes, e.g. in foundries, forges; combined with auxiliary apparatus serving particular purposes combined with auxiliary apparatus, e.g. log saws, pushers for unloading vehicles, means for shunting railway vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C11/00—Trolleys or crabs, e.g. operating above runways
- B66C11/08—Trolleys or crabs, e.g. operating above runways with turntables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C5/00—Base supporting structures with legs
- B66C5/02—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
- B66C5/06—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods with runways or tracks supported for lateral swinging movements
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/10—Cantilevered erection
Abstract
The invention provides a steel-concrete composite beam erecting system based on a bridge deck crane, which at least comprises a bridge deck crane, wherein the bridge deck crane is supported and anchored on the upper part of an erected steel beam section, the front end of an upper longitudinal beam is movably connected with a front suspension beam, the front suspension beam longitudinally moves along the upper longitudinal beam, the bridge deck crane is matched with a beam transporting vehicle and a construction platform, the beam transporting vehicle is positioned on the erected steel beam section, reverse hanging wheels and a first suspension rod are arranged on two sides of the rear end of the construction platform, the construction platform is suspended on an I-shaped rail at the bottom of the front end of the erected steel beam section through the reverse hanging wheels or is anchored on the bottom of the front end of the erected steel beam section through the first suspension rod, two sides of the front end of the construction platform are suspended and fixed on the front suspension beams of the upper longitudinal beams on the left side and the right side through second suspension rods, and the construction platform is integrally and horizontally arranged. This system of erectting realizes that the afterbody feeds the roof beam through installation construction platform on the bridge, construction platform, bridge floor crane and fortune roof beam car together, and the efficiency of construction is higher and construction safety is high.
Description
Technical Field
The invention relates to the technical field of large-span bridge construction, in particular to a steel-concrete composite beam erection system based on a bridge deck crane.
Background
The steel-concrete composite beam comprises steel edge beams positioned on two sides, more than one steel cross beam connected between the steel edge beams on the two sides and a bridge deck, wherein the steel edge beams and the steel cross beams jointly form a steel beam framework, and the bridge deck is embedded on the steel beam framework. Generally, during construction, the steel-concrete composite beam is firstly assembled in a factory in advance, and then the steel-concrete composite beam is erected section by section, and at present, erection of the steel-concrete composite beam on a highway and a river-crossing and sea-crossing bridge is generally completed by a bridge deck crane. When the bridge deck crane hoists the steel-concrete composite beam, the steel trestle or the beam transporting ship needs to transport the pre-assembled steel-concrete composite beam to the bottom of the bridge, and then the steel-concrete composite beam is hoisted and erected by the hoisting crown block on the bridge deck crane. However, the bridge deck crane has the following problems during erection construction: (1) the bridge bottom environment is very complex during construction, and particularly, during erection construction of a highway bridge, the bridge bottom can be provided with buildings such as railway marshalling stations and railway lines which cannot be dismantled or effectively protected, so that the construction difficulty is increased; (2) when the bridge deck crane is used for hoisting, the self weight of the crane and the weight of the hoisted pre-spliced reinforced concrete composite beam generate larger load to the erected steel beam section on the bridge deck, and in addition, if the erection time is longer, the acting time of the load is also longer; (3) when in hoisting and erecting, the hoisting tool cannot be fixed, so that the pre-assembled steel-concrete composite beam is difficult to assemble and wastes time and labor due to shaking during erecting; (4) the bridge deck crane is high in lifting height, has no safety protection to the surrounding environment, and is difficult to guarantee the safety problem during lifting and assembling.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a bridge deck crane-based steel-concrete composite beam erection system, which is characterized in that a construction platform is arranged on a bridge, the construction platform, the bridge deck crane and a beam transporting vehicle are used for realizing the split erection of the steel-concrete composite beam, the single hoisting load is reduced, the construction load of the erected steel beam in the construction process is reduced, the problem of beam feeding when the beam cannot be fed under the bridge is solved, the construction efficiency is high, and the construction safety is high.
The technical scheme adopted for realizing the above purpose of the invention is as follows:
a steel-concrete composite beam erecting system based on a bridge deck crane at least comprises a bridge deck crane, wherein the bridge deck crane comprises a space truss, a front and rear fulcrum assembly, a rear anchor point assembly, a longitudinal moving mechanism, a hoisting overhead traveling crane, a hydraulic unit and an electric unit, the space truss at least comprises an upper longitudinal beam and a lower longitudinal beam, the hoisting overhead traveling crane is arranged on the upper longitudinal beam and runs along the upper longitudinal beam, an I-shaped rail is arranged at the bottom of an erected steel beam section, the bridge deck crane is supported and anchored at the upper part of the erected steel beam section through the front and rear fulcrum assembly and the rear anchor point assembly, the front end of the upper longitudinal beam is movably connected with a front hoisting beam, the front hoisting beam longitudinally moves along the upper longitudinal beam, the bridge deck crane is provided with a beam transporting vehicle and a construction platform in a matched manner, the beam transporting vehicle is positioned on the erected steel beam section and positioned behind the bridge deck crane, reverse hanging wheels and first hanging rods are arranged on two sides of the rear end of the construction platform, the construction platform is hung on the I-shaped rail at the bottom of the erected steel beam section through the reverse hanging wheels, or the front end bottom of the erected steel beam section is anchored by the first suspender, the two sides of the front end of the construction platform are hoisted and fixed on the front hoisting beams of the upper longitudinal beams on the left side and the right side by the second suspender, and the construction platform is integrally and horizontally arranged.
And a third suspender used for temporary anchoring during spanning is arranged between the two sides of the construction platform and the steel beam section erected rigidly, and the third suspender is anchored on the section of the steel side beam at the front end of the steel beam section erected rigidly.
First jib all anchors on the steel boundary beam of having erect the girder steel section, and both sides steel boundary beam respectively is provided with a set of first jib, and the first jib of every group is including four first jibs that are the square matrix setting.
The front hanging beam is connected with the hoisting crown block through a bolt, and the front hanging beam moves longitudinally along the upper longitudinal beam along with the hoisting crown block.
The three-dimensional adjusting mechanism is used for adjusting the position of the steel edge beam and is arranged on the construction platform, and the three-dimensional adjusting mechanism is provided with two sets of adjusting mechanisms which are respectively arranged on two sides of the construction platform.
The construction platform comprises a rack, a bottom plate welded on the rack, and guard rails and skirting boards connected to the periphery of the rack.
The space truss comprises two vertical trusses which are vertically arranged in parallel and a front cross beam, a rear cross beam and a bottom cross beam which are connected between the two vertical trusses, each vertical truss comprises an upper longitudinal beam, a lower longitudinal beam, a front vertical beam, a rear vertical beam, a first inclined strut beam and a second inclined strut beam, wherein the length of the upper longitudinal beam is larger than that of the lower longitudinal beam, the rear vertical beam is connected to the rear end of the upper longitudinal beam and the rear end of the lower longitudinal beam, the front vertical beam is connected to the front end of the lower longitudinal beam and the upper longitudinal beam, the front end of the upper longitudinal beam extends to be parallel and level with the front end of the construction platform, the first inclined strut beam is connected to the rear end of the lower longitudinal beam and the connecting position of the front vertical beam and the upper longitudinal beam, and the second inclined strut beams are connected to the positions, close to the front end, of the upper longitudinal beam and the positions, close to the end, of the bottom cross beam; the front cross beam is connected to the front ends of the two upper longitudinal beams, the rear cross beam is connected to the rear ends of the two upper longitudinal beams, and the bottom cross beam is connected to the front ends of the two lower longitudinal beams.
The hoisting overhead traveling crane comprises a hoisting trolley and an overhead traveling crane beam, a rotary lifting appliance is arranged on the hoisting overhead traveling crane, and the hoisting overhead traveling crane is connected with the electrical unit.
Compared with the prior art, the bridge deck crane-based steel-concrete composite beam erection system provided by the invention has the following advantages: 1. the steel-concrete combined beam erection system comprises a bridge deck crane, a beam transporting vehicle and a construction platform, wherein the beam transporting vehicle transports and feeds steel side beams, steel cross beams and bridge decks, the tail part of the bridge deck crane has the functions of beam feeding, hoisting installation and complete machine spanning, the construction platform assembles the steel side beams and the steel cross beams and is used for safety protection of construction such as tensioning of the bridge decks and cable-stayed bridges, the tail part beam feeding of the whole erection system is realized, the beam feeding from the bridge bottom is not needed, the steel-concrete combined beam erection system is suitable for bridge erection in complex bridge bottom construction environments such as railway marshalling stations and railway lines at the bridge bottom of a public road bridge, and the application range is wide.
2. The bridge deck crane can hoist each component of the steel-concrete composite beam one by one and assemble the components on the construction platform, so that the maximum lifting capacity of the hoisting crown block is effectively reduced, the hoisting stress points of the construction platform are respectively arranged at the front end of the erected steel beam section and the rear end of the erected steel beam section (the position of a rear anchor point assembly of the bridge deck crane), the stress is uniform, the influence on the performance of the bridge deck is small, the components of the steel-concrete composite beam are assembled on the construction platform, the construction is convenient and safe, and the construction efficiency is high.
3. The steel-concrete composite beam erection system provided by the invention can realize integral longitudinal movement, can realize continuous erection construction, and ensures the safety of over-span through the arrangement of the third suspender during over-span.
4. The protective guards and the skirting boards are arranged on the periphery of the construction platform, so that foreign matters can not fall off during construction, and the safety of the surrounding construction environment is ensured.
Drawings
FIG. 1 is a front view of a steel-concrete composite girder according to the present invention;
wherein (a) is the assembled steel-concrete composite beam, and (b) is the unassembled steel-concrete composite beam;
FIG. 2 is a left side view of the steel-concrete composite girder according to the present invention;
wherein (a) is the assembled steel-concrete composite beam, and (b) is the unassembled steel-concrete composite beam;
FIG. 3 is a left side view of the erection system of the reinforced concrete composite girder according to the present invention in an erected state;
FIG. 4 is a front view in the direction A of FIG. 3;
FIG. 5 is a front view taken in the direction B of FIG. 3;
FIG. 6 is a front view taken in the direction C of FIG. 3;
FIG. 7 is a schematic structural view of a space truss according to the present invention;
wherein (a) is a front view, (b) is a left view, and (c) is a top view;
FIG. 8 is a schematic structural diagram of a crane of the present invention;
wherein (a) is a front view and (b) is a left view;
FIG. 9 is a schematic structural view of a construction platform according to the present invention;
wherein (a) is a front view, (b) is a left view, and (c) is a top view;
FIG. 10 is a first schematic view of the erection of the steel-concrete composite girder erection system according to the present invention;
wherein (a) is a left view and (b) is a front view;
FIG. 11 is a second schematic view of the erection of the steel-concrete composite girder erection system according to the present invention;
wherein (a) is a left view and (b) is a front view;
FIG. 12 is a third schematic view of the erection of the steel-concrete composite girder erection system according to the present invention;
FIG. 13 is a fourth schematic view illustrating erection of the steel-concrete composite girder erection system according to the present invention;
wherein (a) is a left view and (b) is a front view;
FIG. 14 is a fifth schematic view illustrating erection of the steel-concrete composite girder erection system according to the present invention;
FIG. 15 is a sixth schematic view illustrating erection of the steel-concrete composite girder erection system according to the present invention;
wherein (a) is a left view and (b) is a front view;
FIG. 16 is a seventh schematic view illustrating erection of the steel-concrete composite girder erection system according to the present invention;
FIG. 17 is an eighth schematic view illustrating erection of the steel-concrete composite girder erection system according to the present invention;
wherein (a) is a left view and (b) is a front view;
FIG. 18 is a ninth schematic view illustrating erection of the steel-concrete composite girder erection system according to the present invention;
wherein (a) is a left view and (b) is a front view;
FIG. 19 is a schematic view showing the erection of the steel-concrete composite girder erection system according to the present invention;
FIG. 20 is a first cross-sectional view of the erection system of the reinforced concrete composite beam according to the present invention;
FIG. 21 is a second cross-sectional view of the erection system of the reinforced concrete composite beam of the present invention;
FIG. 22 is a third schematic cross-sectional view of the erection system of the reinforced concrete composite beam of the present invention;
FIG. 23 is a fourth schematic cross-sectional view of the erection system of the reinforced concrete composite beam according to the present invention;
FIG. 24 is a fifth cross-sectional view of the erection system of the reinforced concrete composite beam according to the present invention;
FIG. 25 is a sixth schematic view illustrating the erection system of a reinforced concrete composite girder according to the present invention;
in the figure: 1-a steel-concrete composite beam, 1 a-an erected steel beam section, 1 b-a steel beam section which is erected rigidly, 11-a steel edge beam, 12-a steel cross beam, 121-a front end steel cross beam, 122-a middle steel cross beam and 123-a rear end steel cross beam;
2-bridge deck crane, 21-space truss, 211-upper longitudinal beam, 212-lower longitudinal beam, 213-front vertical beam, 214-rear vertical beam, 215-first diagonal beam, 216-second diagonal beam, 217-front transverse beam, 218-rear transverse beam, 219-bottom transverse beam;
22-front and rear fulcrum assemblies, 23-rear anchor point assemblies, 24-longitudinal moving mechanisms, 25-hoisting overhead cranes, 251-hoisting trolleys, 252-overhead crane cross beams, 26-hydraulic units and 27-front hoisting beams;
3-construction platform, 31-bench, 32-protective fence, 33-second suspender anchoring hole, 34-first suspender anchoring hole, 35-three-dimensional adjusting mechanism;
4-beam transporting vehicle, 5-reverse hanging wheel, 6-first suspender, 7-second suspender, 8-third suspender and 9-stay cable.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The invention provides a bridge deck crane-based steel-concrete composite beam erection system, wherein a steel-concrete composite beam 1 is structurally shown in figures 1 and 2 and comprises steel edge beams positioned on two sides, more than one steel cross beam connected between the steel edge beams on the two sides and a bridge deck, wherein the steel edge beams 11 and the steel cross beams 12 form a steel beam frame together, the steel beam frame in the embodiment consists of a left steel edge beam, a right steel edge beam, a front end steel cross beam 121, a middle steel cross beam 122 and a rear end steel cross beam 123, and the bridge deck is embedded in the steel beam frame to form an erection steel beam section on a bridge.
The steel-concrete composite beam erection system in the embodiment comprises a bridge deck crane 2, a beam transporting vehicle 4 and a construction platform 3, and the structure of the system is shown in fig. 3-6. The beam transporting vehicle is positioned on the erected steel beam section 1a and behind the bridge deck crane, can run on the erected steel beam section and is used for transporting and feeding the steel side beams, the steel cross beams and the bridge deck slab. The bridge floor crane can realize functions of tail beam feeding, hoisting installation and complete machine spanning, and the construction platform is used for assembling steel side beams and steel cross beams and is used for safety protection of constructions such as bridge decks and cable-stayed bridge tensioning.
The bridge deck crane in this embodiment includes a space truss 21, a front and rear fulcrum assembly 22, a rear anchor point assembly 23, a longitudinal movement mechanism 24, a crane crown block 25, a hydraulic unit 26, an electrical unit, and a front suspension beam 27, as shown in the structural diagrams of the bridge deck crane in fig. 3 to 6. The bridge floor crane supports on the steel beam section 1a that has erect through front and back fulcrum assembly, and back anchor point assembly temporary anchorage is in the rear end of having erect steel beam section 1a, topples forward when preventing bridge floor crane hoist and mount operation, and front and back fulcrum assembly and back anchor point assembly all support and anchor in the steel beam cross-section department of steel-concrete composite beam in this embodiment, guarantee bridge floor crane lateral stability. The bridge deck crane longitudinally moves across the span through the longitudinal moving mechanism, and the longitudinal moving mechanism realizes longitudinal moving action in a hydraulic oil cylinder push-and-pull mode. The hydraulic unit comprises a front fulcrum assembly, a rear fulcrum assembly, a hydraulic oil cylinder and a hydraulic unit, wherein the hydraulic oil cylinder and the hydraulic unit are arranged on the longitudinal moving mechanism. The electric unit mainly comprises a power supply unit of the hydraulic unit and an electric unit of the hoisting overhead traveling crane.
The structure of the space truss is as shown in fig. 7, and comprises two vertical trusses arranged in parallel vertically, and a front cross beam 217, a rear cross beam 218 and a bottom cross beam 219 connected between the two vertical trusses, each vertical truss comprises an upper longitudinal beam 211, a lower longitudinal beam 212, a front vertical beam 213, a rear vertical beam 214, a first inclined strut beam 215 and a second inclined strut beam 216, wherein the length of the upper longitudinal beam is greater than that of the lower longitudinal beam, the rear vertical beam is connected to the rear end of the upper longitudinal beam and the rear end of the lower longitudinal beam, the front vertical beam is connected to the front end of the lower longitudinal beam and the upper longitudinal beam, the front end of the upper longitudinal beam extends to be flush with the front end of the construction platform, the first inclined strut beam is connected to the rear end of the lower longitudinal beam and the connection between the front vertical beam and the upper longitudinal beam, and the second inclined strut beam is connected to the front end of the upper longitudinal beam and the end of the bottom cross beam; the front cross beam is connected to the front ends of the two upper longitudinal beams, the rear cross beam is connected to the rear ends of the two upper longitudinal beams, and the bottom cross beam is connected to the front ends of the two lower longitudinal beams. Because the steel-concrete composite beam erection system provided by the embodiment feeds beams from the tail part of the bridge crane, the space truss of the bridge crane is not arranged in a conventional rhombus but in a space three-dimensional square structure, so that the hoisting crown block can travel to the rear end of the space truss (namely the rear end of the bridge crane) along the upper longitudinal beam, the beam transporting vehicle travels to the lower part of the space truss, and the hoisting crown block hoists workpieces on the beam transporting vehicle, thereby realizing beam feeding at the tail part.
The construction of the crane is shown in fig. 8 and includes a trolley 251 and a crane beam 252. The hoisting crown block is arranged on the upper longitudinal beam and longitudinally runs along the upper longitudinal beam, meanwhile, the hoisting trolley on the hoisting crown block can transversely run along the crown block cross beam, the hoisting crown block is connected with an electric unit, the electric unit of the hoisting crown block is an electric unit of a conventional bridge crane, the hoisting and the hoisting are all electrically driven, the frequency conversion control is carried out, and the longitudinal movement, the transverse movement and the fine adjustment of the hoisting crown block are realized. In the embodiment, the crane trolley is lifted by double winches, the multiplying power of the pulley block is 12, and the lower lifting shoulder pole beam can be ensured to be kept in a horizontal state during working. A rotary lifting appliance is arranged below the lifting crown block, so that +/-180-degree rotation of a lifted workpiece can be realized.
The front suspension beam is movably mounted at the front end of the upper longitudinal beam, and the front suspension beams are mounted on the upper longitudinal beams on the left side and the right side. In this embodiment, the front suspension beam is not provided with a power device, and when the front suspension beam is in an overspan state, the hoisting crown block runs to the front end of the upper longitudinal beam and is connected with the front suspension beam through the bolt, so that the front suspension beam is driven to run along the upper longitudinal beam together.
Reverse hanging wheels 5 and a first suspension rod 6 are arranged on two sides of the rear end of the construction platform, the construction platform is hung on an I-shaped track at the bottom of the front end of the erected steel beam section through the reverse hanging wheels, or is anchored at the bottom of the front end of the erected steel beam section through the first suspension rod, the I-shaped track in the embodiment is a running track of an overhaul trolley at the bottom of the erected steel beam section, and when the construction platform is in an overspan state, the construction platform runs longitudinally through the reverse hanging wheels; when the construction platform is in an erected construction state, the reverse hanging wheel set is emptied, the two sides of the rear end of the construction platform are anchored at the bottom of the front end of the erected steel beam section through the first suspension rods, the four corners of the construction platform are respectively lifted on the erected steel beam section and the bridge floor crane through the first suspension rods and the second suspension rods, and the construction platform is integrally and horizontally arranged. In this embodiment, first jib all anchors on the steel boundary beam of having erect the girder steel section, and both sides steel boundary beam respectively is provided with a set of first jib, and the safety and stability of construction platform is guaranteed including four first jibs that are the square matrix setting to the first jib of every group. The construction platform is provided with two sets of three-dimensional adjusting mechanisms 35 for adjusting the positions of the steel edge beams, and after the construction platform is stably installed and connected, the three-dimensional adjusting mechanisms are hoisted to the construction platform by the bridge floor crane to be installed.
The construction platform in this embodiment has a structure as shown in fig. 9, and includes a rack 31, a bottom plate welded on the rack, and guard rails 32 and skirting boards connected to the periphery of the rack, so as to ensure that no foreign objects fall off during construction, and ensure the safety of the surrounding construction environment, and the front end and the rear end of the construction platform are respectively provided with a second suspender anchoring hole 33 and a first suspender anchoring hole 34 for anchoring a second suspender and a first suspender.
In addition, after the steel beam section is erected, the whole steel-concrete composite beam erecting system needs to move across, and when the steel beam section is moved across, if the first suspender is directly taken down, the bridge deck crane and the construction platform move synchronously, at the moment, the bridge deck crane is located at the erected steel beam section and is connected and fixed, the bridge deck crane cannot lift the front end of the construction platform, and construction accidents are easily caused. When the bridge deck crane strides, need to remove the second jib and be connected with the construction platform, the connection of construction platform this moment mainly relies on anti-change gear and the first jib of construction platform rear end, and anti-change gear and top front suspension beam vertically walk the line, drive construction platform and accomplish to indulge forward and move. In this embodiment, a third suspension rod 8 for temporary anchoring during the spanning is provided between both sides of the construction platform and the rigid erected steel beam section, and the third suspension rod is anchored on the cross section of the front end steel side beam of the rigid erected steel beam section, as shown in fig. 20. When guaranteeing that the bridge floor loop wheel machine crosses and striding, construction platform's front end and rear end all are fixed in the bridge on, break away from completely with the bridge floor loop wheel machine to do not influence the bridge floor loop wheel machine and cross and stride stably.
The erection method of the steel-concrete composite beam erection system in the embodiment comprises the following steps: (1) preparing the working state of the erection system: the bridge deck crane stands and fixes at the upper part of the erected steel beam section, the two sides of the rear end of the construction platform are suspended and temporarily fixed at the bottom of the front end of the erected steel beam section, the two sides of the front end of the construction platform are suspended on the front suspension beam at the front end of the upper longitudinal beam of the bridge deck crane, the whole construction platform is horizontal, and the construction schematic diagram is shown in FIG. 10;
specifically, in this embodiment, the bridge deck crane is fixed at the erected steel beam section by the front and rear fulcrum assemblies and the rear anchor point assemblies, reverse hanging wheels are arranged on two sides of the rear end of the construction platform during spanning and are hung on an i-shaped rail at the bottom of the erected steel beam section through the reverse hanging wheels, two sides of the rear end of the construction platform are anchored at the bottom of the front end of the erected steel beam section through first hanging rods during construction, and two sides of the front end of the construction platform are hung on the front hanging beam through second hanging rods. In addition, a three-dimensional adjusting mechanism is needed when the steel-concrete composite beam is assembled on the construction platform in the later period, so that the three-dimensional adjusting mechanism needs to be hoisted on the construction platform for installation before the steel edge beam of the steel-concrete composite beam is hoisted, and after all structural members of the steel-concrete composite beam are installed, the steel-concrete composite beam is hoisted and transported to the erected steel beam section for temporary storage;
(2) after the preparation of the working state of the erection system is finished, the beam transporting vehicle transports all components of a steel beam frame of the steel-concrete composite beam to the lower part of a bridge deck crane respectively, and a hoisting mechanism of the bridge deck crane hoists all the components to a construction platform respectively and assembles the components;
specifically, in this embodiment, the hoisting mechanism is a hoisting crown block, the beam transporting vehicle transports the steel edge beam of the steel-concrete composite beam to the lower side of the bridge deck crane, the hoisting crown block travels to the rear end of the bridge deck crane and hoists and transports the steel edge beam to the upper side of the construction platform, the hoisting crown block lowers the steel edge beam onto the construction platform and returns to the rear end of the bridge deck crane to hoist and transport the steel edge beam on the other side onto the construction platform, as shown in fig. 11 to 13, the three-dimensional adjusting mechanism adjusts the steel edge beam to the installation position, as shown in fig. 14; the beam transporting vehicle transports the steel cross beams of the steel-concrete composite beam to the lower part of the bridge deck crane, the length direction of the steel cross beams is placed along the length direction of the bridge, the hoisting crown block runs to the middle position of the steel cross beams, and the steel cross beams are hoisted and transported to the upper part of the construction platform, as shown in figures 15-17, the rotary hoisting tool on the hoisting crown block rotates 90 degrees, so that the length direction of the steel cross beams is consistent with the width direction of the bridge, as shown in figure 18, after the hoisting crown block runs to the installation position of the steel cross beams, the steel cross beams are placed to the installation position at the rear end and spliced with the side steel beams at two sides, all the steel cross beams are hoisted and spliced from the rear end to the front end in sequence, and the assembly of the steel beam frame is completed, as shown in figure 19, the steel side beams at the rear end, the steel side beams at the middle and the steel side beams at the front end are sequentially installed;
(3) after the assembly of the steel beam frame is completed, installing stay cables 9 on the steel beam frame, tensioning and fixing the stay cables, hoisting a bridge deck onto the steel beam frame through a bridge deck crane to complete the assembly of the bridge deck, and tensioning the stay cables again to complete the erection of the steel-concrete composite beam;
(4) preparing a spanning state of the erection system: temporarily fixing a construction platform and the front end of the steel beam section which is just erected, dismantling the hoisting between the construction platform and a bridge deck crane, walking the hoisting mechanism to the rear end of the bridge deck crane for parking and anchoring, dismantling the fixation of the bridge deck crane and the erected steel beam section (namely a rear anchor assembly and a rear anchor rod connected with the erected steel beam section), and preparing for longitudinal movement across the span;
specifically, in this embodiment, the three-dimensional adjusting mechanism needs to be hoisted to the erected steel beam section for temporary storage, the construction platform and the section of the front end steel beam of the steel beam section just erected are temporarily anchored by the third boom, and the working schematic diagram is shown in fig. 20. Dismantling a second suspender between the construction platform and the bridge deck crane, walking the hoisting crown block to the rear end of the bridge deck crane for parking and anchoring, removing the restriction of the front and rear fulcrum assemblies and the rear anchor point assembly of the bridge deck crane and the bridge, and preparing for longitudinal movement across the bridge, wherein the working schematic diagram is shown in fig. 21;
(5) the bridge deck crane is longitudinally moved to the next construction station (a steel beam section is erected just) through the longitudinal moving mechanism and is fixed in the station position, and the working schematic diagram is shown in figure 22;
(6) the front hoisting beam is backwards moved to the hoisting position of the front end of the construction platform along the upper longitudinal beam and hoists the front end of the construction platform;
specifically, in this embodiment, a hoisting mechanism (a hoisting overhead traveling crane) drives a front hoisting beam to move longitudinally along an upper longitudinal beam, the hoisting overhead traveling crane travels forward to the front end of the bridge deck crane and is connected with the front hoisting beam into a whole, the hoisting overhead traveling crane travels backward and drives the front hoisting beam to travel backward to a position of a second hoisting rod of the construction platform, the second hoisting rod on the front hoisting beam is lowered, and the construction platform is hoisted and fixed on the front hoisting beam, and a working schematic diagram is shown in fig. 23;
(7) dismantling the temporary fixation (namely a first suspender and a third suspender) between the construction platform and the erected steel beam section and the steel beam section which is erected just, hanging the rear end of the construction platform on an I-shaped track at the bottom of the front end of the erected steel beam section through a reverse hanging wheel, and hanging the construction platform by a second suspender and a reverse hanging wheel at the moment, wherein the working schematic diagram is shown in 24;
(8) the hoisting crown block and the reverse hanging wheel synchronously run to drive the construction platform to synchronously run forwards to complete the over-span work, and the working schematic diagram is shown in FIG. 25;
(9) the erection system is restored to the erected state, and as shown in fig. 10, the next stage of installation work is ready to be performed.
Claims (8)
1. The utility model provides a steel-concrete composite beam erects system based on bridge floor loop wheel machine, includes the bridge floor loop wheel machine at least, the bridge floor loop wheel machine includes space truss, front and back fulcrum assembly, back anchor point assembly, indulges and moves mechanism, jack-up overhead traveling crane, hydraulic unit and electric unit, and the space truss includes longeron and longeron down at least, and the jack-up overhead traveling crane is installed on last longeron and is walked along last longeron, and the bottom of having erect the steel beam section is provided with I-shaped track, its characterized in that: the bridge floor crane supports and anchors on the upper portion of the erected steel beam section through the front and rear pivot assemblies and the rear anchor point assemblies, a front lifting beam is movably connected to the front end of the upper longitudinal beam, the front lifting beam moves longitudinally along the upper longitudinal beam, a beam transporting vehicle and a construction platform are arranged on the bridge floor crane in a matched mode, the beam transporting vehicle is located on the erected steel beam section and located behind the bridge floor crane, reverse hanging wheels and first hanging rods are arranged on the two sides of the rear end of the construction platform, the construction platform is hung on an I-shaped rail at the bottom of the front end of the erected steel beam section through the reverse hanging wheels, or is anchored at the bottom of the front end of the erected steel beam section through the first hanging rods, the two sides of the front end of the construction platform are hung and fixed on the front lifting beams of the upper longitudinal beams on the left and right sides through the second hanging rods, and the construction platform is arranged horizontally.
2. The bridge deck crane-based steel-concrete composite beam erecting system as claimed in claim 1, wherein: and a third suspender used for temporary anchoring during spanning is arranged between the two sides of the construction platform and the steel beam section erected rigidly, and the third suspender is anchored on the section of the steel side beam at the front end of the steel beam section erected rigidly.
3. The bridge deck crane-based steel-concrete composite beam erecting system as claimed in claim 1, wherein: first jib all anchors on the steel boundary beam of having erect the girder steel section, and both sides steel boundary beam respectively is provided with a set of first jib, and the first jib of every group is including four first jibs that are the square matrix setting.
4. The bridge deck crane-based steel-concrete composite beam erecting system as claimed in claim 1, wherein: the front hanging beam is connected with the hoisting crown block through a bolt, and the front hanging beam moves longitudinally along the upper longitudinal beam along with the hoisting crown block.
5. The bridge deck crane-based steel-concrete composite beam erecting system as claimed in claim 1, wherein: the three-dimensional adjusting mechanism is used for adjusting the position of the steel edge beam and is arranged on the construction platform, and the three-dimensional adjusting mechanism is provided with two sets of adjusting mechanisms which are respectively arranged on two sides of the construction platform.
6. The bridge deck crane-based steel-concrete composite beam erecting system as claimed in claim 1, wherein: the construction platform comprises a rack, a bottom plate welded on the rack, and guard rails and skirting boards connected to the periphery of the rack.
7. The bridge deck crane-based steel-concrete composite beam erecting system as claimed in claim 1, wherein: the space truss comprises two vertical trusses which are vertically arranged in parallel and a front cross beam, a rear cross beam and a bottom cross beam which are connected between the two vertical trusses, each vertical truss comprises an upper longitudinal beam, a lower longitudinal beam, a front vertical beam, a rear vertical beam, a first inclined strut beam and a second inclined strut beam, wherein the length of the upper longitudinal beam is larger than that of the lower longitudinal beam, the rear vertical beam is connected to the rear end of the upper longitudinal beam and the rear end of the lower longitudinal beam, the front vertical beam is connected to the front end of the lower longitudinal beam and the upper longitudinal beam, the front end of the upper longitudinal beam extends to be parallel and level with the front end of the construction platform, the first inclined strut beam is connected to the rear end of the lower longitudinal beam and the connecting position of the front vertical beam and the upper longitudinal beam, and the second inclined strut beams are connected to the positions, close to the front end, of the upper longitudinal beam and the positions, close to the end, of the bottom cross beam; the front cross beam is connected to the front ends of the two upper longitudinal beams, the rear cross beam is connected to the rear ends of the two upper longitudinal beams, and the bottom cross beam is connected to the front ends of the two lower longitudinal beams.
8. The bridge deck crane-based steel-concrete composite beam erecting system as claimed in claim 1, wherein: the hoisting overhead traveling crane comprises a hoisting trolley and an overhead traveling crane beam, a rotary lifting appliance is arranged on the hoisting overhead traveling crane, and the hoisting overhead traveling crane is connected with the electrical unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210071756.XA CN114476962A (en) | 2022-01-21 | 2022-01-21 | Steel-concrete composite beam erecting system based on bridge floor crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210071756.XA CN114476962A (en) | 2022-01-21 | 2022-01-21 | Steel-concrete composite beam erecting system based on bridge floor crane |
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| Publication Number | Publication Date |
|---|---|
| CN114476962A true CN114476962A (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210071756.XA Pending CN114476962A (en) | 2022-01-21 | 2022-01-21 | Steel-concrete composite beam erecting system based on bridge floor crane |
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| Country | Link |
|---|---|
| CN (1) | CN114476962A (en) |
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2022
- 2022-01-21 CN CN202210071756.XA patent/CN114476962A/en active Pending
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