CN210140771U - Construction work platform hoisting frame of high mound of bridge - Google Patents

Construction work platform hoisting frame of high mound of bridge Download PDF

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Publication number
CN210140771U
CN210140771U CN201920438779.3U CN201920438779U CN210140771U CN 210140771 U CN210140771 U CN 210140771U CN 201920438779 U CN201920438779 U CN 201920438779U CN 210140771 U CN210140771 U CN 210140771U
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China
Prior art keywords
bracket
platform
pier
bridge
construction
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CN201920438779.3U
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Chinese (zh)
Inventor
王晓岭
陈恒
张俊宏
庞拓
张记广
张拥法
杨玉国
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Road and Bridge Engineering Co Ltd of China Railway 16th Bureau Group Co Ltd
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Road and Bridge Engineering Co Ltd of China Railway 16th Bureau Group Co Ltd
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Abstract

The utility model discloses a construction work platform hoisting frame of high mound of bridge utilizes the nature of concrete resistance to compression, and the excellent steel is placed to pre-buried pipeline in the pier stud to use this to lay the I-steel for supporting on the basis of excellent steel, preparation groined type bracket, but form a construction platform that wholly promotes, utilize chain block drawknot bracket and pier stud owner muscle to make its rise along with the pier stud and promote in step, above-mentioned structure has avoided construction structure's complexity, the cost is reduced.

Description

Construction work platform hoisting frame of high mound of bridge
Technical Field
The utility model relates to a bridge high mound construction technical field, concretely relates to construction work platform hoisting frame and the construction method of hoisting frame of bridge high mound.
Background
At present, with the development and construction of highway networks in China, more and more high pier bridge schemes are adopted and constructed. In the cross-section pier construction such as bridge in the past, mostly adopt to set up the steel pipe support as construction platform, and promote with the groined frame, but to the high mound of 30 ~ 80m, it is not only loaded down with trivial details and with higher costs to use traditional construction method, the construction period is long, the security does not guarantee yet, if use hydraulic creeping formwork, again because of the turnover number of times is few, seem economy inadequately, consequently, need find reasonable efficient new technology, new technology solves the setting up and the promotion problem of high pier construction platform urgently, in order to satisfy the construction needs of high pier.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects existing in the prior background, the construction operation lifting frame of the bridge high pier provided by the utility model is used as a high pier lifting platform, which is firm and safe; and simultaneously, the utility model provides a construction method of construction operation hoisting frame of high mound of bridge, very big reduction the time limit for a project, avoided loaded down with trivial details nature and the costly problem that brings, the operation implementation nature is strong.
In order to achieve the above purpose, the present invention is realized by the following technical solution:
the utility model provides a pair of construction work platform hoisting frame of high mound of bridge, include:
the two support brackets are symmetrically arranged on the upper part of each die unit of the pier body;
the groined bracket platform is formed by fixing at least two layers of brackets transversely and longitudinally, is erected on the supporting bracket, and is formed by oppositely pulling the brackets at two sides of the lower part of the groined bracket by using connecting fasteners; the four chain hoists are respectively arranged at four corners of the groined bracket;
the construction platform frame is arranged on the upper portion of the groined bracket platform, and the height of the construction platform is greater than the pouring height of each pier shaft die.
Optionally, the two support brackets are arranged in corresponding embedded position pipelines in the pier body below the template.
Optionally, the construction platform frame uniformly fixes vertical support rods on the groined bracket platform, and bottom supporting wooden plate platforms are horizontally arranged along the vertical support rods from bottom to top every 1-3 m.
Optionally, cross braces are diagonally arranged on four sides of the construction platform frame and are fixed in a diagonal manner.
Optionally, the support bracket is a steel bar; the bracket of the groined bracket platform is made of I-shaped steel; the distance between the I-shaped steel and the pier body is kept between 0.3 and 0.8 m.
Optionally, the connecting fastener is finish-rolled deformed steel bar.
Optionally, a ladder stand is arranged on the side face of the construction platform frame.
The utility model also provides a construction method of construction work platform hoisting frame of high mound of bridge, including following step:
(1) supporting, namely placing a support rod in the pier stud and taking the support rod as a support foundation;
(2) laying a bracket, manufacturing a groined bracket, and laying the groined bracket on the supporting rod to form a construction platform capable of being integrally lifted;
(3) and short-distance mechanical lifting equipment is arranged, and the chain block is synchronously tensioned to pull the bracket to be uniformly lifted to a specified position by utilizing the chain block pulling bracket hanging point and the pier stud upper main rib.
Optionally, before the first formwork template of the pier body is assembled, a steel bar placing pipeline is embedded below the first formwork template of the pier body from top to bottom along the long axis direction of the pier body;
and after the first mould concrete is poured, finding the embedded pipeline and placing the steel bar.
Optionally, before the next formwork construction of the pier body, four constructors are respectively positioned at reinforcing steel bar baskets at four corners of the pier body, the finish rolling deformed steel bars at two ends are loosened, hanging points on the I-shaped steel of the base and main ribs of the pier body are synchronously pulled by a chain block at a constant speed to manually stretch the block at a constant speed, so that the frame is lifted, and the steel bars are taken down; and after the frame is lifted to a specified position, the steel bar is replaced to be used as a support, the finish rolling deformed steel bars at two ends are screwed, and after the finish rolling deformed steel bars are fixed, the chain block is taken down to complete one-time lifting.
The technical scheme of the utility model, have following advantage:
the embodiment of the utility model provides a construction work platform hoisting frame of a bridge high pier, which is a construction platform that uses the concrete compression resistance property, pre-buried pipelines in a pier stud to place steel bars, uses the steel bars as support manufacturing brackets, and uses a chain block tie bracket and a pier stud main reinforcement to synchronously lift the steel bars along with the rise of the pier stud; specifically, the construction platform is formed by laying I-shaped steel on the basis of a support bracket and manufacturing a groined bracket, and the construction platform can be integrally lifted. Furthermore, in a certain space of the construction platform, a support net is welded, and a plurality of layers of construction pedestrian passages are arranged in the support net. Above-mentioned structural firmness is strong, and the security obtains guaranteeing completely, in the work progress of the high mound of 30 ~ 80 meters, sets up the pre-buried pipeline of rod iron in the preset position of every mould of pier shaft through before, and every promotion is once, and the rod iron is placed in the pre-buried pipeline of next mould, plays the effect of safety support.
The utility model utilizes the elevation of the pier body to synchronously lift the construction platform, thus solving the problems of tedious work, long construction period and high cost of the erection of the high pier construction platform; the utility model discloses a construction method maneuverability is strong, and the security is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the lifting frame of the present invention;
FIG. 2 is an enlarged partial schematic view of FIG. 1;
FIG. 3 is a side view of the structure of the lifting frame of the present invention;
fig. 4 is a top view of the lifting frame structure of the present invention;
fig. 5 is a three-dimensional view of the hoisting frame structure of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
In this embodiment, for example, the Shandong Liuhe bridge is located in the high-speed three-standard section in Yunnan, as shown in fig. 1, the construction terrain is complex, and the left and right bridges are completely separated. The left main span and the right main span are both 130m, the left line bridge length is 284m, and the right line bridge length is 283.5 m. The bridge is provided with two main bridge piers, namely 1# pier and 2# pier, the heights of the main bridge piers are respectively 56m of left 1# pier, 51m of left 2# pier, 45m of right 1# pier and 46m of right 2# pier, and the cross section sizes of the pier columns are all 800cm multiplied by 200 cm. Four pier stud of two main bridge piers of this bridge are the high pier that exceeds 40m, adopt during concrete implementation the technical scheme of the utility model construction.
The method comprises the steps of utilizing the compression resistance of concrete, longitudinally pre-burying 2 pipelines in a pier body to place steel bars 2, enabling two ends of each steel bar 1 to extend out to serve as supports, transversely arranging I-steel 3 on two large surface sides of the pier body 1 to enable the I-steel to be placed on the steel bars 2, oppositely pulling the two I-steel 3 on two small surface sides of the pier body by using finish-rolled deformed steel bars 4 to enable the I-steel to form a whole, fixing the whole and enabling the whole to be tightly attached to the pier body to serve as a construction platform base, building a groined platform on the basis of the two I-steel, laying wood boards 6 and foot baffles on the platform to serve as pedestrian passageways, uniformly welding vertical steel pipes serving as support rods on the basis of the platform, and building the same platform in layers to form a.
Furthermore, the frame is higher than the pier body 1 by about 4m of pouring height of each mold, and the four sides of the frame are all used as cross braces and are fixed in an inclined pulling mode. Before the construction of the next mould, pulling points are arranged at four corners of the frame, the other end of the frame is fixed on a main rib of the top surface of concrete respectively, the pulling points are uniformly pulled at the four corners of the frame by using the chain block, after the frame is synchronously lifted to a specified position, the operation is repeated, the steel bar is arranged in a reserved pipeline for supporting, the finish rolling deformed steel bars at two ends are anchored, the fixing effect is achieved, the chain block is taken down, and the lifting is completed once.
The platform is arranged at a certain distance from the pier body to be used as a template overturning and hoisting channel, so that construction is facilitated.
Specifically, taking the left width pier No. 1 as an example, the method comprises the following steps:
(1) the pouring height of each pier column is 9m, the height of each template is 2.25m, and when a first template steel bar is erected after pouring of the pier bearing platform is completed (0-9 m), 1 PVC pipe with the diameter of 3.5cm is pre-buried in positions of the two sides of the 8m pier column surface, which are 6m away from the bearing platform and 1m away from the edge of the pier column respectively.
(2) After the die assembly and the pouring are finished, removing the lower 3 templates, finding out a steel bar 2 with a reserved hole passage and a diameter of 3.2cm, wherein the length of the steel bar is 3m, the length of the steel bar is 0.5m respectively, the I-steel 3 with the length of 12m and the lifting I36 is respectively placed at two ends of the steel bar, and 1 piece of finish-rolled deformed steel bar 4 is placed on the 2m surface of the pier column and 0.2m away from the pier column to tie two I-steels; on the basis of the I36I-shaped steel, two I25I-shaped steel 5 with the length of 5m are respectively placed along two ends of the 2m surface of the pier column, the distance is 0.6m, the inner side I-shaped steel is 0.5m away from the pier body, the I-shaped steel is firmly welded with the bottom layer I36I-shaped steel, and then 4I 36I-shaped steel 5 with the length of 11m are arranged along the 8m surface, and the distance is the same as the 2m surface, so that the # -shaped bracket is formed.
(3) Set up 4 calabash hanging points and four reinforcing bar hanging baskets, carry out the pocket end at the bottom of the 0.5m cavity bottom welding reinforcing bar net piece that is close to the pier stud, prevent that debris from falling.
(4) Paving a wood board in the width range of 0.6m between the two I-beams as a pedestrian passageway, and welding a vertical seamless steel pipe with the diameter of 4.8cm on each 1.6m of 8m surface and each 1.2m of 2m surface (the width of the passageway is 0.6m) on the I-beams; vertical height is every 2m overlap joint two rows of length and breadth two to steel pipes to lay plank 6 according to the bottom method of laying, form 7 layers of bracket platforms of height 13.5m, set up cat ladder 7 and use when constructing from top to bottom in one side of pedestrian passageway, all draw reinforcing wholeness and stability to the opposite direction with the steel pipe at four sides diagonal angle simultaneously, and it is peripheral to cover the bracket with the safety net, and the bracket main part is accomplished basically this moment.
(5) Use this bracket as construction platform when pier shaft 9 ~ 18m is under construction to 2 PVC pipes of pre-buried in 15m department, the position is with 6m department. Before 18 ~ 27m pier stud construction, 3 templates under 9 ~ 18m pier stud are demolishd, use chain block to connect bottom bracket hanging point and pier stud top surface owner muscle, loosen the finish rolling screw-thread steel of drawknot I-steel, 4 back constructors stretch-draw chain block in step, after the bracket begins to promote, take off the steel bar, continue stretch-draw chain block and make the bracket promote to pier stud 15m department, place the steel bar, slowly loosen the calabash, make the bracket steadily place on the steel bar, screw the finish rolling screw-thread steel at both ends, fix the bracket position, take off the calabash, accomplish the bracket and promote.
(6) The operation is repeated in the subsequent several moulds until the pouring of the pier stud 56m is completed.
The utility model synchronously lifts the construction platform while utilizing the rising of the pier body, and solves the problems of tedious work, long construction period and high cost of the erection of the high pier construction platform; and the operability is strong, and the safety is high.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (8)

1. The utility model provides a construction work platform hoisting frame of high mound of bridge which characterized in that includes:
the two support brackets are symmetrically arranged on the upper part of each die unit of the pier body;
the groined bracket platform is formed by fixing at least two layers of brackets transversely and longitudinally, is erected on the supporting bracket, and is formed by oppositely pulling the brackets at two sides of the lower part of the groined bracket by using connecting fasteners;
the construction platform frame is arranged on the upper portion of the groined bracket platform, and the height of the construction platform is greater than the pouring height of each pier shaft die.
2. The frame of claim 1, wherein four chain hoists are respectively disposed at four angular positions of the bracket.
3. The lifting frame for the construction work platform of the high pier of the bridge as claimed in claim 1, wherein the two support brackets are arranged in the corresponding embedded position pipelines in the pier body below the template.
4. The lifting frame for the construction work platform of the high pier of the bridge according to any one of claims 1 to 3, wherein vertical support rods are uniformly fixed on the groined bracket platform, and bottom supporting wooden platforms are horizontally arranged along the vertical support rods from bottom to top at intervals of 1-3 m.
5. The lifting frame for the construction work platform of the high pier of the bridge as claimed in claim 4, wherein cross braces are arranged diagonally on four sides of the lifting frame for diagonal tension fixation.
6. The construction work platform hoist of a bridge high pier according to claim 1, wherein the support bracket is a steel bar; the bracket of the groined bracket platform is made of I-shaped steel; the distance between the I-shaped steel and the pier body is kept between 0.3 and 0.8 m.
7. The construction work platform hoist of the high pier of bridge of claim 1, wherein the connection fastener is finish-rolled deformed steel bar.
8. The construction work platform lifting frame for the high pier of the bridge as claimed in claim 1, wherein a ladder stand is provided on a side surface of the construction platform frame.
CN201920438779.3U 2019-04-02 2019-04-02 Construction work platform hoisting frame of high mound of bridge Active CN210140771U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920438779.3U CN210140771U (en) 2019-04-02 2019-04-02 Construction work platform hoisting frame of high mound of bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920438779.3U CN210140771U (en) 2019-04-02 2019-04-02 Construction work platform hoisting frame of high mound of bridge

Publications (1)

Publication Number Publication Date
CN210140771U true CN210140771U (en) 2020-03-13

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110130225A (en) * 2019-04-02 2019-08-16 中铁十六局集团路桥工程有限公司 A kind of the construction operation platform hoisting frame and its construction method of Bridge High-pier
CN111705677A (en) * 2020-07-07 2020-09-25 中国十七冶集团有限公司 A smooth frame that rises for high pier stud turns over mould construction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110130225A (en) * 2019-04-02 2019-08-16 中铁十六局集团路桥工程有限公司 A kind of the construction operation platform hoisting frame and its construction method of Bridge High-pier
CN111705677A (en) * 2020-07-07 2020-09-25 中国十七冶集团有限公司 A smooth frame that rises for high pier stud turns over mould construction

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