CN207062787U - Can Fast Installation remove maintenance construction platform - Google Patents
Can Fast Installation remove maintenance construction platform Download PDFInfo
- Publication number
- CN207062787U CN207062787U CN201720450618.7U CN201720450618U CN207062787U CN 207062787 U CN207062787 U CN 207062787U CN 201720450618 U CN201720450618 U CN 201720450618U CN 207062787 U CN207062787 U CN 207062787U
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- platform
- triangular truss
- bridge structure
- bridge
- hoisting
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Abstract
The utility model discloses it is a kind of can Fast Installation remove maintenance construction platform, including：Suspension bracket plateform system, lifting mobile system and anchor system；The lifting mobile system is arranged on bridge structure body, for lifting and moving the suspension bracket plateform system；The triangular truss girder is fixed on the lower section of bridge structure body by the anchor system；The suspension bracket plateform system includes：Multiple triangular truss girders, it is arranged at the lower section of bridge structure body, and along the genesis analysis of bridge structure body；Secondary beam, interval is fixed with multiple secondary beams on two neighboring triangular truss girder, to form the stress frame of plateform system；Panel, it is laid and is fixed on the secondary beam to form platform.The utility model proposes a kind of economic and practical, structure safety, the maintenance construction platform that can quickly remove installation, it is ensured that bridge strengthening effect and quality, it is ensured that construction safety, improve the operating efficiency of construction.
Description
Technical Field
The utility model relates to a bridge engineering technical field. More specifically speaking, the utility model relates to a but quick installation is dismantled overhauls construction platform.
Background
The periodic maintenance and maintenance reinforcement of bridges become new hot points for bridge engineering construction, and the maintenance construction platform is used as one of important working platforms of bridge reinforcement engineering, and the structural form, the applicability, the safety and the economy of the maintenance construction platform are more and more emphasized by engineering technicians. In the construction is consolidated in bridge maintenance, to the bridge general description of difference, current maintenance construction platform has forms such as full hall steel pipe scaffold frame in the beam bottom, bridge inspect vehicle, fixed maintenance platform, construction gallows.
The full hall steel pipe scaffold in beam bottom requires highly to the foundation bearing capacity, and workman intensity of labour is high, and the support expense is high, and the erection time limit is longer, only is applicable to the very little land bridge of bridge clearance under the bridge.
The bridge inspection vehicle is flexible and convenient to use, but the cost is very high, the bridge inspection vehicle is limited by the use load of the bridge inspection vehicle, the number of constructors is limited, the bridge inspection vehicle cannot adapt to large-scale materials and equipment, the bridge inspection vehicle is only suitable for minor repair and minor repair construction, and part of bridges with wider sidewalks or higher webs cannot be used.
The fixed maintenance platform is convenient to use, is limited by using load, is limited by the number of constructors, cannot adapt to large-scale materials and equipment, is only suitable for minor repair construction, and is generally only configured with the fixed maintenance platform only for the grand bridge in the prior art.
The construction hanger is the main form that present bridge overhauls construction platform adopted, but in the construction hanger that has now, has the gallows structure heavy, can not have enough to meet the need the use and lead to the expense high, the construction platform is firm inadequately or the shortcoming of construction cycle length.
In order to ensure the bridge reinforcing effect and quality, ensure the construction safety, lighten the labor intensity of workers and improve the working efficiency of construction, the design of the construction hanging bracket platform which is economical, applicable, safe in structure and simple and convenient to assemble and disassemble is very important.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to solve at least the above problems and to provide at least the advantages which will be described later.
The utility model discloses the weak point that avoids prior art to exist provides an economy and is suitable for, structure safety, can demolish the maintenance construction platform of installation fast, can guarantee bridge reinforcement effect and quality, ensures construction safety, improves the work efficiency of construction.
In order to realize the objects and other advantages in accordance with the present invention, there is provided an inspection and construction platform that can be quickly installed and removed, comprising: the lifting frame comprises a lifting frame platform system, a lifting moving system and an anchoring system; the lifting moving system is arranged on the bridge structure body and used for lifting and moving the lifting frame platform system; the anchoring system fixes the hanger platform system below the bridge structure; wherein,
the hanger platform system comprising:
a plurality of triangular truss girders disposed below the bridge structure and distributed along a longitudinal direction of the bridge structure;
a plurality of secondary beams are fixed on two adjacent triangular truss main beams at intervals to form a stressed framework of the platform system;
a deck laid and secured on the secondary beam to form a platform.
It is preferable that the first and second liquid crystal layers are formed of,
the secondary beam is a steel pipe with the diameter of 48mm and the wall thickness of 3.5 mm;
triangle-shaped truss girder is formed by the equipment of triangle-shaped truss segment, triangle-shaped truss segment length is 3 ~ 5m, and it includes:
the two upper chords are steel pipes with the diameter of 48mm and the wall thickness of 3.5mm, and the two upper chords are horizontally arranged at an interval of 0.4-0.8 m;
the lower chord is a steel pipe with the wall thickness of phi 60 mm and the distance between the lower chord and the two upper chords is equal to that between the lower chord and the two upper chords, and the distance between the lower chord and the two upper chords is equal to that between the two upper chords;
and the first connecting rod connects the two upper chords and the lower chord to form a whole, and is a steel pipe with the diameter of 28 mm and the wall thickness of 3 mm.
Preferably, the distance between every two adjacent triangular truss main beams is set to be 1-4 m, and the distance between every two adjacent secondary beams on the pair of triangular truss main beams is 1-2 m.
Preferably, the hoisting system comprises a hoisting trolley and a winch.
Preferably, the anchoring system is a fastener and a shackle;
the lower part of the fixing piece is provided with a groove for clamping a guardrail of a bridge structure, one side of the fixing piece, which is positioned outside the guardrail, extends downwards and forms a through hole, and a shackle is fixed on the through hole for fixing a steel wire rope for hoisting a main beam of the triangular truss; the upper surface of the fixing piece is positioned at one end outside the guardrail and extends upwards along the side edge to form a reinforcing surface.
The utility model discloses at least, include following beneficial effect:
1. all the components of the maintenance platform system are manufactured in a factory, so that the manufacturing quality can be effectively ensured, and the safety of the maintenance platform system in the using process is ensured;
2. the maintenance platform system has the advantages that the weight of each component unit is small, the maximum unit weight is the triangular truss segment 130k g, the assembly, the disassembly and the under-bridge transfer can be completely carried out manually without large mechanical equipment, and the maintenance platform system is very simple and convenient;
3. the hoisting trolley of the maintenance platform system can longitudinally move to any specified position after the truss girder is hoisted;
4. the length and the width of the maintenance platform system can be adjusted according to needs, the transverse bridge width can be integral multiple of the section length of 4.4m, the longitudinal bridge length can be integral multiple of 4m, and the maintenance platform system can almost adapt to all types of bridges;
5. the truss girder segment of the hanger platform system adopts an inverted triangular section form, is a very reasonable stress structure form, has very high bearing capacity, can meet the requirements of all bridge reinforcing construction loads, and has the steel consumption less than 10kg/m2Is very economical;
6. the truss girder segments of the hanger platform system are made of uniform bed-jig frames, any segments can be connected, and the truss girder segments can be repeatedly used, so that the construction cost is reduced;
7. the secondary beam of the hanger platform system adopts phi 48mm common scaffold steel pipes, so that the hanger platform system can be leased, can be repeatedly used and is very economical, and meanwhile, the scaffold pipes are connected with the truss main beam through fasteners, so that the construction is very convenient and reliable.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural view of the maintenance construction platform of the present invention;
fig. 2 is a schematic diagram of the construction of the main beam and the secondary beam of the triangular truss of the present invention;
fig. 3 is a schematic structural view of a triangular truss segment according to the present invention;
fig. 4 is a schematic structural view of the fixing member.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in FIGS. 1-4, the embodiment provides a maintenance construction platform capable of being rapidly installed and removed, comprising: the lifting frame comprises a lifting frame platform system, a lifting moving system and an anchoring system; the lifting moving system is arranged on the bridge structure body and used for lifting and moving the lifting frame platform system; the anchoring system fixes the hanger platform system below the bridge structure; wherein,
the hanger platform system comprising:
a plurality of triangular truss girders 1 which are arranged below the bridge structure and distributed in the longitudinal direction of the bridge structure;
a plurality of secondary beams 6 are fixed on two adjacent triangular truss main beams 1 at intervals to form a stressed framework of the platform system;
panels laid and fixed on said secondary beams 6 to form a platform.
Wherein, the secondary beam 6 is a steel pipe with the diameter of 48mm and the wall thickness of 3.5 mm;
triangular truss girder 1 is assembled by triangular truss segment, triangular truss segment length is 3 ~ 5m, triangular truss girder 1 is formed by the bed-jig preparation, and it includes:
the two upper chords 11 are steel pipes with the diameter of 48mm and the wall thickness of 3.5mm, and the two upper chords 11 are horizontally arranged at an interval of 0.4-0.8 m;
the lower chord 12 is a steel pipe with the diameter of 60 mm and the wall thickness of 5mm, the distance between the lower chord 12 and the two upper chords 11 is equal to that between the lower chord 12 and the two upper chords 11, and the distance between the lower chord and the two upper chords 11 is equal to that between the two upper chords 11;
and the first connecting rod connects the two upper chords 11 and the lower chord 12 into a whole, and is a steel pipe with the diameter of 28 mm and the wall thickness of 3 mm. The specific structure is as shown in fig. 3, every three first connecting rods 13 are spliced into a group to form a regular triangle, the three first connecting rods are respectively connected with two upper chords 11 and a lower chord 12, each group is spaced at a certain distance, three second connecting rods 14 are arranged between two adjacent groups of first connecting rods and are respectively located on three faces of the triangular truss main beam 1, and the three second connecting rods are respectively located on different vertexes of the two groups of first connecting rods forming the regular triangle.
The interval of adjacent triangle-shaped truss girder 1 sets up to 1 ~ 4m, and the 6 intervals of adjacent secondary beam on a pair of triangle-shaped truss girder 1 are 1 ~ 2 m.
The hoisting system comprises a hoisting trolley 2 and a winch 3.
The anchoring system comprises a fixing piece 4 and a shackle;
the lower part of the fixing piece 4 is provided with a groove to clamp a guardrail of a bridge structure, one side of the fixing piece 4, which is positioned outside the guardrail, extends downwards and forms a through hole, and a shackle is fixed on the through hole to fix a steel wire rope 5 for hoisting the triangular truss main beam 1; the upper surface of the fixing member 4 is located at one end of the guardrail and extends upwards along the edge side to form a reinforcing surface, as shown in fig. 4, the reinforcing surface comprises three surfaces, and the longitudinal sections of two opposite surfaces are trapezoidal. Adopt the mounting 4 of this application directly to make according to the guardrail size of bridge, direct back-off need not other mounting 4 on the guardrail, need not drilling and destroys bridge structures, and the construction is simple quick, has also guaranteed that the structure of bridge is not destroyed.
In the technical scheme, the triangular truss main beams 1 are arranged in parallel with the transverse direction of the bridge structural body, the lengths of the triangular truss main beams 1 are spliced according to the transverse distance of the bridge structural body, finally, the length of each triangular truss main beam 1 is an integral multiple of the length of a triangular truss section, and the length of a longitudinal bridge of the maintenance platform is an integral multiple of the distance between the adjacent triangular truss main beams 1. The triangular truss main beam 1 is assembled by adopting the pipe fittings with the above parameters, the limitation of using load of the existing maintenance platform can be overcome, the large-scale material and equipment are adapted, the maintenance platform does not need to occupy the bottom surface below the bridge, and the traffic under the bridge is not influenced. The overhaul platform realizes that most of the components are manufactured in a factory, so that the manufacturing quality is effectively ensured, and the component efficiency of the construction platform is improved.
The construction method of the overhaul construction platform capable of being quickly installed and dismantled comprises the following steps:
the method comprises the following steps: the triangular truss girder 1 sections are prefabricated in a factory, the triangular truss sections are transported to a specified place under a bridge structure, the number of the triangular truss sections is determined according to the transverse width of the bridge structure, and the triangular truss girder 1 is formed by splicing high-strength bolts. The implementation of the step saves the field manufacture of the main beam, saves the construction time and ensures the quality of the triangular truss main beam 1.
Step two: the position of the secondary beam 6 is pre-lofted, and a fastener is fastened on the upper chord 11 of the triangular truss main beam 1 according to the lofting position of the secondary beam 6, so that a frame structure of the maintenance platform is formed.
Step three: the hoisting trolley 2 moves to a specified position on the bridge structure, and a winch 3 arranged on the hoisting trolley 2 is connected with two ends of the triangular truss main beam 1 through a steel wire rope and hoists the triangular truss main beam to a specified height;
step four: moving the hoisting trolley 2 as required, and moving the hoisted triangular truss main beam 1 to an appointed position;
step five: installing a fixing piece 4 on a guardrail of a bridge structure body at an appointed position, connecting and fixing a steel wire rope for hoisting a triangular truss main beam 1 and the fixing piece 4 through shackle, and simultaneously removing the connection between a winch 3 and the steel wire rope;
step six: and repeating the first step to the fifth step to finish the hoisting of all the triangular truss main beams 1, and connecting and fixing all the triangular truss main beams with the fixing pieces 4 through the steel wire ropes on the guardrails of the bridge structure body, as shown in fig. 1.
Step seven: combining the triangular truss main beams 1 into a platform stressed framework by the secondary beams 6 through fasteners fixed on the triangular truss main beams 1;
step eight: and (3) binding and fixing the panel on the secondary beam 6 through iron wires, erecting guardrails at the edge of the platform and fully hanging safety nets to form the overhaul construction platform.
Step nine: and the platform is dismantled according to the reverse process of the first step to the eighth step.
The present invention will be further described with reference to the following embodiments and principles.
The overhaul platform is applied to the disease treatment engineering of the Yuqian Yuhe high-speed bridge, and the salix caprate bridge is located at Yuwu high-speed K41+ 500; the bridge length is 540 meters, and the single width of the bridge deck is 12.5 meters; span combination: 18X 30 m; the structural form is prestressed simple supported hollow plate girder, column pier and pile foundation. In this case, the lengths of the triangular truss sections are 4.4m, the center distance between adjacent triangular truss main beams is 4m, the length of each triangular truss main beam is 13.2m (namely the length of three assembled triangular truss sections) because the single width of the bridge deck is 12.5 m, the triangular truss main beams are connected into an integral support in the air by using secondary beams with the distance of 1.2m, and finally the length of the support reaches 28.6 m. Bamboo gangplank (panel) is fully paved on the platform. Two sides of the maintenance platform are provided with phi 48 scaffold pipes, the wall thickness is 3.5mm, the distance is 1.5 m/root, safety protection nets are fully hung, and the height of the protection nets is 1.2 m. The hoisting and hanging steel wire rope adopts a phi 16 steel wire rope, and the total breaking tension is 149 KN.
The utility model discloses the most important utility model point is realizing that the prefabricated scene of mill only needs simply to assemble and hoist and mount and form and overhaul the platform, and the platform of preparation can place macro-scale material and equipment, carries out big repair work, has guaranteed the high load of platform, overhauls the platform and can the bearing in above-mentioned embodiment: 2100 kg/girder 8 girder 16800kg, 16.8 tons can satisfy the requirement of bearing all maintenance reinforcement equipment.
The following confirmation by checking
load calculation (single triangular truss main beam):
a: dead weight loads such as steel pipe fastener and panel: 1000kg
b: bear crowd, construction load: calculated according to the 2100kg of uniform distribution borne by each truss,
calculated according to the uniform load (2 upper chords on the top surface are stressed):
q＝(1000+2100)×10/(13.2×2)≈1200N/m＝1.2KN/m
model building and calculation
The dead weight and the worst load of the single-sheet truss are calculated and considered, the single-sheet truss is used as a stress object, a model is established by utilizing MIDAS6.71, the upper chord of the truss is 2 phi 48 multiplied by 3.5mm, the lower chord of the truss is phi 60 multiplied by 5mm, and the diagonal brace pull rod, the compression rod and the vertical compression rod are phi 28 multiplied by 3 mm.
(iii) Structure checking
1) Intensity checking
σmax＝143MPa<[σ]＝200MPa
Meets the requirements.
2) Verification of stiffness
f＝43mm<L/300＝44mm
Meets the requirements.
3) Checking calculation of stability
According to the above, the upper chord maximum pressure is 55 KN.
The length-to-fineness ratio of the component is that lambda is l/r is 0.6/0.01578 is 38
Phi is 0.442, phi is 0.92
σ＝N/(Amψ)＝550/(4.893×0.92)＝122Mpa<[σ]＝200MPa
Meets the requirements.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720450618.7U CN207062787U (en) | 2017-04-26 | 2017-04-26 | Can Fast Installation remove maintenance construction platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720450618.7U CN207062787U (en) | 2017-04-26 | 2017-04-26 | Can Fast Installation remove maintenance construction platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207062787U true CN207062787U (en) | 2018-03-02 |
Family
ID=61501535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720450618.7U Expired - Fee Related CN207062787U (en) | 2017-04-26 | 2017-04-26 | Can Fast Installation remove maintenance construction platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207062787U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906756A (en) * | 2017-04-26 | 2017-06-30 | 武汉二航路桥特种工程有限责任公司 | Can Fast Installation remove maintenance operation platform and its construction method |
| CN111041982A (en) * | 2019-12-25 | 2020-04-21 | 贵州桥梁建设研究院有限公司 | Double-width bridge double-suspension-point bridge inspection vehicle |
| CN117661435A (en) * | 2023-12-05 | 2024-03-08 | 中铁二十五局集团有限公司 | A kind of maintenance and repair equipment for the bottom of movable bridge girder plates |
-
2017
- 2017-04-26 CN CN201720450618.7U patent/CN207062787U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906756A (en) * | 2017-04-26 | 2017-06-30 | 武汉二航路桥特种工程有限责任公司 | Can Fast Installation remove maintenance operation platform and its construction method |
| CN111041982A (en) * | 2019-12-25 | 2020-04-21 | 贵州桥梁建设研究院有限公司 | Double-width bridge double-suspension-point bridge inspection vehicle |
| CN117661435A (en) * | 2023-12-05 | 2024-03-08 | 中铁二十五局集团有限公司 | A kind of maintenance and repair equipment for the bottom of movable bridge girder plates |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180302 |