CN110847012A - Protection device for composite beam cable-stayed bridge and construction method thereof - Google Patents
Protection device for composite beam cable-stayed bridge and construction method thereof Download PDFInfo
- Publication number
- CN110847012A CN110847012A CN201911324907.2A CN201911324907A CN110847012A CN 110847012 A CN110847012 A CN 110847012A CN 201911324907 A CN201911324907 A CN 201911324907A CN 110847012 A CN110847012 A CN 110847012A
- Authority
- CN
- China
- Prior art keywords
- longitudinal
- wheel
- cable
- stayed bridge
- longitudinal beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 44
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 230000001681 protective effect Effects 0.000 claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 230000001012 protector Effects 0.000 claims description 25
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a protective device for a composite beam cable-stayed bridge and a construction method thereof, wherein the protective device comprises a truss beam, a wheel-rail guide mechanism and a protective net; the truss girder comprises transverse beams arranged in a transverse parallel mode and longitudinal beams arranged in a longitudinal parallel mode; the longitudinal beams are connected between the transverse beams which are arranged transversely; the wheel rail guide mechanism is detachably arranged on the upper part of the longitudinal beam and comprises a wheel rail bracket, a guide wheel, a connecting rod, a steel wheel and a brake assembly; the wheel rail brackets are detachably arranged at the two longitudinal ends of the longitudinal beam; the guide wheel is arranged on one side of the wheel rail bracket; the connecting rods are connected between the wheel rail brackets at the longitudinal two ends of the longitudinal beam in a matching manner; the steel wheels are arranged at the bottoms of the two ends of the wheel rail bracket; two ends of the connecting rod are provided with braking components; the protective net is arranged at the upper part of the area formed by the cross beams and the longitudinal beams in a surrounding mode. The invention has strong operability, convenient assembly and disassembly, strong applicability and good use effect, and can completely meet the requirement of bridge installation and protection.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a protective device for a composite beam cable-stayed bridge and a construction method thereof.
Background
The composite beam is a bridge structure form which is used more in the existing bridge construction, a longitudinal and transverse beam system is mostly adopted, the composite beam mainly comprises a main longitudinal beam, a transverse beam, a small longitudinal beam, an anchor plate unit and the like (see figure 1), a concrete precast slab is arranged at the top of the steel beam in a lattice mode, potential safety hazards exist in the safety process, and a protective device needs to be arranged. The bridge site in the middle and western region is constructed by adopting a bulk method. The positioning and the connection of the components belong to high-altitude operation. The construction conditions are comparatively hard and the operation risk is large. The arrangement of the protective net is one of the difficulties in bridge construction: if the weight is too large, the movement is difficult, the mounting and dismounting difficulty is increased, and the mounting line shape of the bridge is influenced; the weight is too small, and the deformation is easy to occur under the action of wind load, so that the use effect is influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the protection device for the combined beam cable-stayed bridge and the construction method thereof, which have the advantages of strong operability, convenience in installation and disassembly, strong applicability and good use effect, can completely meet the installation and protection requirements of bridge positions, and can effectively solve the problems of overall slippage, installation and disassembly, deformation control and the like on the premise of meeting the construction safety.
The technical scheme of the invention is as follows:
the protection device for the composite beam cable-stayed bridge comprises a truss beam, a wheel-rail guide mechanism and a protective net; the truss girder comprises transverse girders arranged in transverse parallel and longitudinal girders arranged in longitudinal parallel; the longitudinal beams are connected between the transverse beams in a transverse arrangement in a matching mode; the wheel rail guide mechanism is detachably mounted on the upper part of the longitudinal beam in a matching manner and comprises a wheel rail bracket, a guide wheel, a connecting rod, a steel wheel and a brake assembly; the wheel rail brackets are detachably mounted at the two longitudinal ends of the longitudinal beam in a matching manner; the guide wheel is arranged on one side of the wheel rail bracket in a matching way; the connecting rods are connected between the wheel rail brackets at the longitudinal two ends of the longitudinal beam in a matching manner; the steel wheels are installed at the bottoms of the two ends of the wheel rail bracket in a matching manner; the two ends of the connecting rod are provided with the braking components in a matching way; the protective net is installed on the upper portion of an area defined by the cross beams and the longitudinal beams in a matched mode.
The composite beam is protector for cable-stayed bridge, wherein: the brake assembly comprises a lead screw, a handle and a stop block; the lead screw vertically penetrates through the connecting rod, and two ends of the lead screw extend out to the upper part and the lower part of the connecting rod; the handle is arranged at one end of the screw rod penetrating out towards the upper part of the connecting rod in a matching way; the stop block is installed at one end, penetrating out from the lower part of the connecting rod, of the lead screw in a matched mode.
The composite beam is protector for cable-stayed bridge, wherein: the wheel rail guide mechanisms are provided with a pair of wheel rail guide mechanisms which are respectively installed on the upper parts of the longitudinal beams close to the outermost sides of the two transverse ends of the truss girder in a matching mode.
The composite beam is protector for cable-stayed bridge, wherein: the wheel rail guide mechanism further comprises a guide rod; the guide rod is horizontally connected to one transverse side of the wheel rail bracket; the guide wheel is made of rubber tires and is installed at the tail end of the guide rod in a matching mode.
The composite beam is protector for cable-stayed bridge, wherein: and connecting lugs are arranged at the tops of the two ends of the wheel rail bracket in a matching manner.
The composite beam is protector for cable-stayed bridge, wherein: the cross beams are arranged in a pair in parallel in the transverse direction, and each cross beam consists of a cross beam upper chord member, a cross beam lower chord member, a cross beam vertical rod and a cross beam diagonal rod; the upper chord and the lower chord of the cross beam are arranged in parallel up and down; the beam vertical rods are provided with a plurality of vertical rods which are vertically connected between the upper chord member and the lower chord member of the beam at equal intervals; the beam diagonal rods are also provided with a plurality of beams, and every two adjacent beams are connected between the top ends and the bottom ends of the beam vertical rods.
The composite beam is protector for cable-stayed bridge, wherein: the longitudinal beams are arranged in parallel in the longitudinal direction and connected between a pair of the cross beams at equal intervals; each longitudinal beam consists of a longitudinal beam upper chord, a longitudinal beam lower chord, a longitudinal beam vertical bar and a longitudinal beam inclined bar; the upper chord and the lower chord of the longitudinal beam are arranged in parallel up and down; the longitudinal beam vertical rods are provided with a plurality of vertical rods which are vertically connected between the upper chord member and the lower chord member of the longitudinal beam at equal intervals; the longitudinal beam inclined rod is also provided with a plurality of longitudinal beam inclined rods, and every two adjacent longitudinal beam vertical rods are connected between the top end and the bottom end of each longitudinal beam vertical rod.
The composite beam is protector for cable-stayed bridge, wherein: connecting oblique rods are vertically arranged at two ends of the longitudinal beam positioned at the outermost sides of the two transverse ends of the truss girder; the wheel rail bracket is detachably arranged at the top end of the connecting oblique rod through a splicing plate.
The construction method of the protective device for the composite beam cable-stayed bridge specifically comprises the following steps: (1) assembling a crossbeam, a longitudinal beam and a connecting diagonal rod which are prepared in advance into a truss girder, installing a protective net on the truss girder, transporting the truss girder to the lower part of a main bridge, and assembling a wheel rail support, a guide rod, a guide wheel, a connecting rod, a steel wheel and a brake assembly which are prepared in advance into a wheel rail guide mechanism; (2) hoisting by using a bridge deck crane or a winch, and hoisting the truss girder to the lower part of the installed main longitudinal beam of the cable-stayed bridge to ensure that the gap between the truss girder and the main longitudinal beam of the cable-stayed bridge on two sides is uniform; (3) assembling the wheel-rail guide mechanism and the truss girder into a whole, screwing bolts, and slowly dropping the whole protection device for the combined beam cable-stayed bridge consisting of the truss girder, the wheel-rail guide mechanism and the protective net by using a crane to closely attach the steel wheels to the main longitudinal beam of the cable-stayed bridge; (4) and longitudinally moving the whole protection device for the composite beam cable-stayed bridge to a construction position, and screwing a lead screw of the brake assembly to enable a stop dog of the brake assembly to be closely attached to a lower cover plate of a main longitudinal beam of the cable-stayed bridge.
Has the advantages that:
the protective device for the combined beam cable-stayed bridge has the advantages of reasonable and compact structural design, strong operability, capability of longitudinally moving along the main longitudinal beam, capability of ensuring the operation safety of steel beam erection, convenience in installation and disassembly, strong applicability and good use effect, can completely meet the installation and protection requirements of bridge positions, and can effectively solve the problems of integral sliding, installation and disassembly, deformation control and the like on the premise of meeting the construction safety.
According to the structural characteristics of the composite beam, the steel wheels are arranged on the outer side of the lower cover plate of the main longitudinal beam, so that the whole protective device for the composite beam cable-stayed bridge can move along the bridge direction on the main longitudinal beam through the steel wheels; the protective device for the combined beam cable-stayed bridge can be disassembled by adopting the cooperation of a bridge deck crane, the whole body slowly falls below the bridge and is disassembled piece by piece, the circular assembly and disassembly of a construction platform in the using process can be avoided, and the construction efficiency is improved.
Compared with the prior art, the protection device for the combined beam cable-stayed bridge has the following advantages that:
① has light weight and high rigidity, and will not deform under the action of load;
② is made by simple tools, and has convenient installation, use and disassembly, safety, reliability, convenient and easy operation, and strong applicability;
③ has strong function and applicability, and can be used for on-site safety protection of various cable-stayed bridges;
④, the technical measures of clamping, guiding, sliding and the like are adopted, so that the construction safety and the practicability are effectively ensured, and the operation difficulty is reduced.
⑤, the manufacturing cost is low, the detachable steel beam can be reused in other projects (only the width of the truss girder needs to be adjusted when the width of the section of the steel beam changes), and the economical efficiency is good.
The construction method of the protective device for the composite beam cable-stayed bridge ensures the construction progress aiming at the installation and construction characteristics of the composite beam bridge, adopts integral installation, needs to assemble all parts under the bridge into a whole, then adopts a winch or a full-rotation crane for installation, and has the advantages of simple operation, safety, reliability, convenience, easy implementation and strong applicability.
Drawings
Fig. 1 is a front view of the protector for a composite beam cable-stayed bridge according to the present invention.
Fig. 2 is a schematic structural view of the protector for a composite beam cable-stayed bridge in the direction of a-a in fig. 1.
Fig. 3 is a front view of the protector for a composite beam cable-stayed bridge according to the present invention applied to a cable-stayed bridge.
Fig. 4 is an enlarged view of the area B in fig. 3 of the protector for a composite beam cable-stayed bridge according to the present invention.
Fig. 5 is a left side view of the protector for a composite beam cable-stayed bridge according to the present invention applied to a cable-stayed bridge.
Fig. 6 is an enlarged view of the area C in fig. 5 of the protector for a composite beam cable-stayed bridge according to the present invention.
Detailed Description
As shown in fig. 1 to 6, the protector for a composite beam cable-stayed bridge of the present invention includes a truss beam 1, a wheel-rail guide mechanism 2 and a protection net 3.
The truss girder 1 comprises a cross beam 11, a longitudinal beam 12 and a connecting diagonal 13.
The cross beams 11 are a pair which are transversely arranged in parallel, and each cross beam 11 consists of a cross beam upper chord 111, a cross beam lower chord 112, a cross beam vertical bar 113 and a cross beam diagonal bar 114; the beam upper chord 111 and the beam lower chord 112 are arranged in parallel up and down and are all made of equal angle steel; the beam vertical rods 113 are provided with a plurality of vertical rods which are vertically connected between the beam upper chord 111 and the beam lower chord 112 at intervals and equal distances, and the beam vertical rods 113 also adopt equal angle steel; the beam diagonal rods 114 are also provided with a plurality of round steel, and a beam diagonal rod 114 is connected between the top end and the bottom end of every two adjacent beam vertical rods 113.
The longitudinal beams 12 are arranged in parallel in the longitudinal direction and connected between a pair of cross beams 11 at equal intervals. Each longitudinal beam 12 is composed of a longitudinal beam upper chord 121, a longitudinal beam lower chord 122, a longitudinal beam vertical bar 123 and a longitudinal beam diagonal bar 124; the longitudinal beam upper chord 121 and the longitudinal beam lower chord 122 are arranged in parallel up and down and are all made of equal angle steel; the longitudinal beam vertical rods 123 are provided with a plurality of vertical rods which are vertically connected between the longitudinal beam upper chord 121 and the longitudinal beam lower chord 122 at intervals and at equal intervals, and the longitudinal beam vertical rods 123 are made of equilateral angle steel; this longeron down tube 124 also has many and all adopts the round steel, is connected with a longeron down tube 124 between the top and the bottom of every two adjacent longeron montants 123.
The connecting diagonal rods 13 are provided with two pairs, wherein one pair of connecting diagonal rods 13 are respectively vertically connected to the upper parts of the two ends of the longitudinal beam 12 positioned on the outermost side of the left end of the truss girder 1, and the other pair of connecting diagonal rods 13 are respectively vertically connected to the upper parts of the two ends of the longitudinal beam 12 positioned on the outermost side of the right end of the truss girder 1.
The wheel track guide mechanism 2 has a pair of wheel track guide mechanisms which are respectively matched and installed on the upper parts of two longitudinal beams 12 close to the outermost side of the truss girder 1. Wherein each wheel-track guide mechanism 2 comprises a pair of wheel-track brackets 21, a pair of guide rods 22, a pair of guide wheels 23, a connecting rod 24, a pair of steel wheels 25 and a pair of brake assemblies 26.
The pair of wheel rail brackets 21 are respectively installed at the top ends of the connecting inclined rods 13 at the two ends of the longitudinal beam 12 close to the outermost side of the truss girder 1 in a matching way; each wheel-track support 21 comprises a pair of connecting vertical bars 211 and a pair of connecting cross bars 212; the bottom ends of the pair of connecting vertical rods 211 are fixedly provided with splicing plates 213 in a matching way and are vertically connected to the top ends of the connecting inclined rods 13 at the two ends of the longitudinal beam 12 close to the outermost side of the truss girder 1 through the splicing plates 213; the pair of connecting cross bars 212 are horizontally connected to one side of the top ends of the pair of connecting vertical bars 211 respectively.
The pair of guide rods 22 are made of square steel pipes and are respectively horizontally connected to one lateral side of the pair of wheel rail brackets 21, specifically, one lateral side of the pair of connecting vertical rods 21. The pair of guide wheels 23 are made of rubber tires and are respectively fitted to the ends of the pair of guide rods 22. The connecting rod 24 is horizontally connected between the top ends of the pair of wheel rail brackets 21, in particular between the ends of the pair of connecting cross rods 212 of the pair of wheel rail brackets 21; the top parts of the two ends of the wheel rail bracket 21 are respectively provided with a connecting lug 241 in a matching way. The pair of steel wheels 25 are respectively matched and installed at the bottoms of the two ends of the wheel rail bracket 21.
The pair of braking components 26 are respectively matched and installed at two ends of the connecting rod 24, and each braking component 26 comprises a lead screw 261, a handle 262 and a stop 263; the lead screw 261 is vertically passed through the link 24 and both ends thereof are protruded above and below the link 261; the handle 262 is matched and arranged at one end of the screw 261 which penetrates out to the upper part of the connecting rod 24; the stop 263 is fittingly mounted to an end of the lead screw 261 that extends out below the link 24.
The protective net 3 is arranged and fixed on the upper part of the area enclosed by the cross beam 11 and the longitudinal beam 12 of the truss girder 1 in a matching way.
The invention discloses a use principle of a protective device for a composite beam cable-stayed bridge, which comprises the following steps:
before the protective device for the combined beam cable-stayed bridge is used, the truss beam 1, the wheel rail guide mechanism 2 and the protective net 3 are firstly assembled into a whole under the cable-stayed bridge, then the truss beam 1 is lifted to the position below the installed steel beam by using a winch or a bridge deck crane, the wheel rail guide mechanism 2 and the protective net 3 are installed, and the wheel rail guide mechanism and the protective net 3 gradually slide forwards along with the erection of the steel beam, so that the high-altitude falling in the installation process can be effectively prevented.
The protective device for the combined beam cable-stayed bridge integrally moves along the bridge direction on the upper surface of the lower cover plate 41 of the main longitudinal beam 4 of the cable-stayed bridge through the steel wheels 25, the weight of the protective device for the combined beam cable-stayed bridge is light, the integral weight is about 500Kg, and the transportation, the installation, the longitudinal movement and the disassembly are all convenient; the operator can realize the integral movement of the protector for the combined beam cable-stayed bridge by connecting the lifting lug 241 and manually operating the protector by using a nylon rope; the protection device for the composite beam cable-stayed bridge has light weight, is easy to deviate in the longitudinal moving process, and has potential safety hazards; therefore, a wheel-rail guide mechanism 2 is arranged between the truss girder 1 and the lower cover plate 41 of the main longitudinal beam 4 of the cable-stayed bridge, and a gap of 2-3cm is preset between the wheel-rail guide mechanism 2 and the lower cover plate 41 of the main longitudinal beam 4 of the cable-stayed bridge, so that when the protection device for the combined girder cable-stayed bridge is integrally deviated, the protection device can play a role in limiting and adjusting; after the protective device for the combined beam cable-stayed bridge is longitudinally moved to the proper position, the brake assembly 26 is arranged on the inner side of the steel wheel 25, the lead screw 261 of the brake assembly 26 is upwards screwed during longitudinal movement so as to integrally move, and the lead screw 261 is screwed after the protective device is moved to the proper position, so that the stop block 263 is tightly attached to the lower cover plate 41 of the main longitudinal beam 4 of the cable-stayed bridge, and a braking effect is achieved.
The technical conditions of the protective device for the composite beam cable-stayed bridge are as follows:
① the width of the steel wheel 25 meets the walking requirement to ensure the smooth movement on the steel beam;
② the connecting rod 24 is stressed greatly, is made of H-shaped steel and has enough strength to ensure that the structure does not deform greatly in the operation process;
③ the truss girder 1, the protective net 3 and the nylon ropes have enough strength, and the beams 11 and the longitudinal beams 12 in the truss girder 1 adopt section steel with the weight as light as possible under the condition of ensuring the use safety;
④ the protector for the composite beam cable-stayed bridge is only used for safety protection in construction and can not be used as a construction walking platform or a main bearing member.
The invention relates to a construction method of a protective device for a composite beam cable-stayed bridge, which comprises the following steps:
(1) assembling and splicing a cross beam 11, a longitudinal beam 12 and a connecting oblique rod 13 which are prepared in advance into a whole to form a truss girder 1, and transporting the truss girder 1 to the lower part of a main bridge after a protective net 3 is installed on the truss girder 1; meanwhile, the wheel-rail guide mechanism 2 is formed by assembling a wheel-rail support 21, a guide rod 22, a guide wheel 23, a connecting rod 24, a steel wheel 25 and a brake assembly 26 which are prepared in advance, and has installation conditions;
(2) hoisting by using a bridge deck crane or a winch, and hoisting the truss girder 1 to the position below the installed main longitudinal beam 4 of the cable-stayed bridge, so that the gap between the truss girder 1 and the main longitudinal beams 4 of the cable-stayed bridge on the two sides is uniform;
(3) assembling the wheel-rail guide mechanism 2 and the truss girder 1 into a whole and screwing bolts, and slowly dropping the whole consisting of the truss girder 1, the wheel-rail guide mechanism 2 and the protective net 3, namely the protective device for the combined beam cable-stayed bridge by using a crane to ensure that the steel wheels 25 are closely attached to the main longitudinal beam 4 of the cable-stayed bridge;
(4) the protection device for the combined beam cable-stayed bridge is integrally longitudinally moved to a construction position, and a lead screw 261 of the brake assembly 26 is screwed to enable a stop 263 of the brake assembly 26 to be closely attached to a lower cover plate 41 of a main longitudinal beam 4 of the cable-stayed bridge.
The protection device for the combined beam cable-stayed bridge has the advantages of simple structure, strong operability, capability of completely meeting the bridge installation protection requirement, obvious effects on safe operation and productivity improvement, improvement on the working environment, shortening of the installation period and higher popularization value.
The construction method of the protective device for the composite beam cable-stayed bridge ensures the construction progress aiming at the installation and construction characteristics of the composite beam bridge position, and has the advantages of simple operation, safety, reliability, convenience, easiness in implementation and strong applicability.
Claims (9)
1. The utility model provides a protector for composite beam cable-stay bridge which characterized in that: the protective device comprises a truss girder, a wheel rail guide mechanism and a protective net;
the truss girder comprises transverse girders arranged in transverse parallel and longitudinal girders arranged in longitudinal parallel; the longitudinal beams are connected between the transverse beams in a transverse arrangement in a matching mode;
the wheel rail guide mechanism is detachably mounted on the upper part of the longitudinal beam in a matching manner and comprises a wheel rail bracket, a guide wheel, a connecting rod, a steel wheel and a brake assembly; the wheel rail brackets are detachably mounted at the two longitudinal ends of the longitudinal beam in a matching manner; the guide wheel is arranged on one side of the wheel rail bracket in a matching way; the connecting rods are connected between the wheel rail brackets at the longitudinal two ends of the longitudinal beam in a matching manner; the steel wheels are installed at the bottoms of the two ends of the wheel rail bracket in a matching manner; the two ends of the connecting rod are provided with the braking components in a matching way;
the protective net is installed on the upper portion of an area defined by the cross beams and the longitudinal beams in a matched mode.
2. The protector for a composite beam cable-stayed bridge according to claim 1, wherein: the brake assembly comprises a lead screw, a handle and a stop block; the lead screw vertically penetrates through the connecting rod, and two ends of the lead screw extend out to the upper part and the lower part of the connecting rod; the handle is arranged at one end of the screw rod penetrating out towards the upper part of the connecting rod in a matching way; the stop block is installed at one end, penetrating out from the lower part of the connecting rod, of the lead screw in a matched mode.
3. The protector for a composite beam cable-stayed bridge according to claim 1, wherein: the wheel rail guide mechanisms are provided with a pair of wheel rail guide mechanisms which are respectively installed on the upper parts of the longitudinal beams close to the outermost sides of the two transverse ends of the truss girder in a matching mode.
4. The protector for a composite beam cable-stayed bridge according to claim 1, wherein: the wheel rail guide mechanism further comprises a guide rod; the guide rod is horizontally connected to one transverse side of the wheel rail bracket; the guide wheel is made of rubber tires and is installed at the tail end of the guide rod in a matching mode.
5. The protector for a composite beam cable-stayed bridge according to claim 1, wherein: and connecting lugs are arranged at the tops of the two ends of the wheel rail bracket in a matching manner.
6. The protector for a composite beam cable-stayed bridge according to claim 1, wherein: the cross beams are arranged in a pair in parallel in the transverse direction, and each cross beam consists of a cross beam upper chord member, a cross beam lower chord member, a cross beam vertical rod and a cross beam diagonal rod; the upper chord and the lower chord of the cross beam are arranged in parallel up and down; the beam vertical rods are provided with a plurality of vertical rods which are vertically connected between the upper chord member and the lower chord member of the beam at equal intervals; the beam diagonal rods are also provided with a plurality of beams, and every two adjacent beams are connected between the top ends and the bottom ends of the beam vertical rods.
7. The protector for a composite beam cable-stayed bridge according to claim 6, wherein: the longitudinal beams are arranged in parallel in the longitudinal direction and connected between a pair of the cross beams at equal intervals; each longitudinal beam consists of a longitudinal beam upper chord, a longitudinal beam lower chord, a longitudinal beam vertical bar and a longitudinal beam inclined bar; the upper chord and the lower chord of the longitudinal beam are arranged in parallel up and down; the longitudinal beam vertical rods are provided with a plurality of vertical rods which are vertically connected between the upper chord member and the lower chord member of the longitudinal beam at equal intervals; the longitudinal beam inclined rod is also provided with a plurality of longitudinal beam inclined rods, and every two adjacent longitudinal beam vertical rods are connected between the top end and the bottom end of each longitudinal beam vertical rod.
8. The protector for a composite beam cable-stayed bridge according to claim 7, wherein: connecting oblique rods are vertically arranged at two ends of the longitudinal beam positioned at the outermost sides of the two transverse ends of the truss girder; the wheel rail bracket is detachably arranged at the top end of the connecting oblique rod through a splicing plate.
9. A construction method of a guard device for a composite beam cable-stayed bridge according to any one of claims 1 to 8, comprising the steps of:
(1) assembling a crossbeam, a longitudinal beam and a connecting diagonal rod which are prepared in advance into a truss girder, installing a protective net on the truss girder, transporting the truss girder to the lower part of a main bridge, and assembling a wheel rail support, a guide rod, a guide wheel, a connecting rod, a steel wheel and a brake assembly which are prepared in advance into a wheel rail guide mechanism;
(2) hoisting by using a bridge deck crane or a winch, and hoisting the truss girder to the lower part of the installed main longitudinal beam of the cable-stayed bridge to ensure that the gap between the truss girder and the main longitudinal beam of the cable-stayed bridge on two sides is uniform;
(3) assembling the wheel-rail guide mechanism and the truss girder into a whole, screwing bolts, and slowly dropping the whole protection device for the combined beam cable-stayed bridge consisting of the truss girder, the wheel-rail guide mechanism and the protective net by using a crane to closely attach the steel wheels to the main longitudinal beam of the cable-stayed bridge;
(4) and longitudinally moving the whole protection device for the composite beam cable-stayed bridge to a construction position, and screwing a lead screw of the brake assembly to enable a stop dog of the brake assembly to be closely attached to a lower cover plate of a main longitudinal beam of the cable-stayed bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911324907.2A CN110847012B (en) | 2019-12-20 | 2019-12-20 | Protective device for composite beam cable-stayed bridge and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911324907.2A CN110847012B (en) | 2019-12-20 | 2019-12-20 | Protective device for composite beam cable-stayed bridge and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110847012A true CN110847012A (en) | 2020-02-28 |
| CN110847012B CN110847012B (en) | 2024-08-27 |
Family
ID=69610361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911324907.2A Active CN110847012B (en) | 2019-12-20 | 2019-12-20 | Protective device for composite beam cable-stayed bridge and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110847012B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232482A (en) * | 2021-11-25 | 2022-03-25 | 中交路桥华南工程有限公司 | Sealing strip pasting construction platform and sealing strip pasting method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040008570A (en) * | 2002-07-18 | 2004-01-31 | 이상식 | temporary bracket for construction of precast concrete beam bridge and the installation method using the same |
| CN101787678A (en) * | 2010-02-08 | 2010-07-28 | 中铁一局集团有限公司 | Large-span section assembling bridge manufacturing machine and assembling construction process thereof |
| CN106522104A (en) * | 2016-12-21 | 2017-03-22 | 中铁四局集团有限公司 | Construction method of curved-surface arc-shaped concrete tower |
| CN106758841A (en) * | 2016-12-29 | 2017-05-31 | 中交第三航务工程局有限公司 | A kind of whole construction process of the double rope face low-pylon cable-stayed bridges of double tower |
| CN107460828A (en) * | 2017-08-31 | 2017-12-12 | 中铁宝桥集团有限公司 | Portable combination beam bridge location mounting platform and application method |
| KR101797988B1 (en) * | 2017-02-22 | 2017-12-13 | 브릿지테크놀러지(주) | Truss through bridge and the construction method thereof |
| CN108547225A (en) * | 2018-04-27 | 2018-09-18 | 中交二公局第二工程有限公司 | A kind of assembly moving type security construction of prevention work job platform and construction method and application |
| CN211368350U (en) * | 2019-12-20 | 2020-08-28 | 中铁宝桥集团有限公司 | Protector for composite beam cable-stayed bridge |
-
2019
- 2019-12-20 CN CN201911324907.2A patent/CN110847012B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040008570A (en) * | 2002-07-18 | 2004-01-31 | 이상식 | temporary bracket for construction of precast concrete beam bridge and the installation method using the same |
| CN101787678A (en) * | 2010-02-08 | 2010-07-28 | 中铁一局集团有限公司 | Large-span section assembling bridge manufacturing machine and assembling construction process thereof |
| CN106522104A (en) * | 2016-12-21 | 2017-03-22 | 中铁四局集团有限公司 | Construction method of curved-surface arc-shaped concrete tower |
| CN106758841A (en) * | 2016-12-29 | 2017-05-31 | 中交第三航务工程局有限公司 | A kind of whole construction process of the double rope face low-pylon cable-stayed bridges of double tower |
| KR101797988B1 (en) * | 2017-02-22 | 2017-12-13 | 브릿지테크놀러지(주) | Truss through bridge and the construction method thereof |
| CN107460828A (en) * | 2017-08-31 | 2017-12-12 | 中铁宝桥集团有限公司 | Portable combination beam bridge location mounting platform and application method |
| CN108547225A (en) * | 2018-04-27 | 2018-09-18 | 中交二公局第二工程有限公司 | A kind of assembly moving type security construction of prevention work job platform and construction method and application |
| CN211368350U (en) * | 2019-12-20 | 2020-08-28 | 中铁宝桥集团有限公司 | Protector for composite beam cable-stayed bridge |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114232482A (en) * | 2021-11-25 | 2022-03-25 | 中交路桥华南工程有限公司 | Sealing strip pasting construction platform and sealing strip pasting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110847012B (en) | 2024-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11634877B2 (en) | Method for removal of temporary support system for road bridge pre-fabricated small box girder-type concealed bent cap, and equipment therefor | |
| CN202706503U (en) | Electric lifting discharging platform for main building construction | |
| CN101550769B (en) | Movable trestle | |
| CN210507141U (en) | Movable tensioning platform | |
| CN110820602A (en) | Single-segment box girder bridge girder erection machine and operation method thereof | |
| CN210288140U (en) | Simple and easy prefabricated decking hoist and mount platform truck | |
| CN111188273A (en) | Large-section steel truss girder erection system of large-span steel-concrete composite bridge and construction method | |
| CN110847012B (en) | Protective device for composite beam cable-stayed bridge and construction method thereof | |
| CN221000603U (en) | Be applied to maintenance car subassembly of bridge tower | |
| CN211368350U (en) | Protector for composite beam cable-stayed bridge | |
| CN211171456U (en) | Laying trolley for laying U-shaped beam rails | |
| CN101920913B (en) | Self-propelled wide-span tower crane | |
| CN114892516A (en) | Detachable cable saddle device in cable hoisting system | |
| CN210368664U (en) | Wide-body bridge girder erection machine | |
| CN107700363A (en) | Bridge tower rack with lifting system and construction method | |
| CN209779468U (en) | Lifting type truss working platform for bridge maintenance | |
| CN113459272A (en) | A construction work platform for prefabricating case roof beam | |
| CN220057640U (en) | Track type bridge cast-in-situ breast board construction platform | |
| CN221822760U (en) | Operation platform system of cantilever bridge girder erection machine | |
| CN110565458A (en) | Laying trolley and method for laying U-shaped beam track | |
| CN117923355B (en) | Method and device for reducing friction and positioning by longitudinally moving hoisting roller of heavy component of suspension bridge | |
| CN220888338U (en) | High-altitude operation movable platform device suitable for steel bridge inter-box beam construction | |
| CN217869992U (en) | Steel truss girder lower chord member connecting operation platform | |
| CN213326462U (en) | Special hoisting device of sound barrier acoustic baffle of railway engineering | |
| CN211420902U (en) | Single-segment box girder bridge girder erection machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |