CN115058982A - Self-elevating pier formwork system - Google Patents
Self-elevating pier formwork system Download PDFInfo
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- CN115058982A CN115058982A CN202210829880.8A CN202210829880A CN115058982A CN 115058982 A CN115058982 A CN 115058982A CN 202210829880 A CN202210829880 A CN 202210829880A CN 115058982 A CN115058982 A CN 115058982A
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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Abstract
本发明涉及高墩浇筑用的辅助设备技术领域，具体涉及自升式高墩模架系统，其包括爬模立柱、固定模架、提升单元、外模板、外模板伸缩机构、内模板和内模板伸缩机构。本发明的有益效果为：有效克服了翻模系统利用辅助起重设备作为提升时的重大安全隐患问题，克服了滑模系统混凝土质量不能有效保障的质量问题，克服了爬模系统前期施工复杂的问题；同时与传统施工工艺比较，自升式墩柱模架系统存在模板用量小易拼装(固定模架由外木架、内模架和连接架可拆卸连接，外模板和内模板由多块模板拼装构成)、成本低、安全性高、进度快、操作简单、适用范围广的特点。
The invention relates to the technical field of auxiliary equipment for high pier pouring, in particular to a self-elevating high pier formwork system, which comprises a climbing formwork column, a fixed formwork, a lifting unit, an outer formwork, an outer formwork telescopic mechanism, an inner formwork and an inner formwork Telescopic mechanism. The beneficial effects of the present invention are: effectively overcome the major safety hazard when the form-turning system uses auxiliary lifting equipment as lifting, overcome the quality problem that the concrete quality of the sliding form system cannot be effectively guaranteed, and overcome the complex early construction of the climbing form system. At the same time, compared with the traditional construction process, the self-elevating pier and column formwork system has small formwork consumption and is easy to assemble (the fixed formwork is detachably connected by the outer wooden frame, the inner formwork and the connecting frame, and the outer formwork and the inner formwork are composed of multiple pieces. It has the characteristics of low cost, high safety, fast progress, simple operation and wide application range.
Description
Technical Field
The invention relates to the technical field of auxiliary equipment for high pier pouring, in particular to a self-elevating high pier formwork system.
Background
At present, the main construction method of the high pier in the bridge construction industry comprises the following steps: turning over a template, sliding a form and climbing a form. The main principle of the template overturning process is that an auxiliary tower crane or a crane is used as hoisting equipment, and two-layer or three-layer template overturning constructors have the defects of high construction safety risk and large template consumption; the main principle of the slip form is that before the initial setting of concrete, a template system is lifted by utilizing a lifting facility to achieve the purpose of high pier construction, and the obvious defects of disturbance and appearance plastering before the initial setting of concrete exist; the main principle of the creeping formwork is that auxiliary hoisting equipment is utilized to pour concrete at the bottom of a pier stud, a formwork system lifting guide rail is installed on the poured bottom pier stud, the formwork system is lifted by the guide rail and the lifting system, and the creeping formwork has the defects of high guide rail installation process requirement and high formwork manufacturing cost.
Accordingly, there is a need for a self-elevating pier formwork system to solve the above problems.
Disclosure of Invention
In order to solve the above problems, the following solutions are proposed: the invention provides a self-elevating pier formwork system, which has the advantages that the safety risk of a turnover formwork is high, the using amount of the formwork is large, disturbance and appearance finish exist before concrete is initially set in a slip form, and the problems of high guide rail process requirement and high formwork manufacturing cost exist in creeping formwork, and comprises the following steps:
the lower end of the creeping formwork upright post is fixed on a reinforcement cage of the pier stud and vertically extends upwards;
the outer die frame is matched with the outer contour of a pier column and keeps an outer installation interval, the inner die frame is matched with the inner contour of the pier column and keeps an inner installation interval, the upper end of the outer die frame and the upper end of the inner die frame are fixed through the connecting frame, and the connecting frame is taken out of the upper end of the pier column;
the lifting unit is arranged between the creeping formwork stand column and the fixed formwork, and the fixed formwork is arranged on the creeping formwork stand column in a lifting manner under the driving of the lifting unit;
an outer template;
the outer formwork is mounted on the outer formwork through the outer formwork telescoping mechanism, and the outer formwork is movably mounted on the outer formwork between the outer surface close to/far away from the pier column under the driving of the outer formwork telescoping mechanism;
an inner template;
the inner formwork is mounted on the inner formwork through the inner formwork telescoping mechanism, and the inner formwork is movably mounted on the inner formwork between inner surfaces close to or far away from the pier stud under the driving of the inner formwork telescoping mechanism.
Further, the outer die frame and the inner die frame are rectangular closed frames, and the creeping formwork stand columns and the lifting units are arranged in a one-to-one correspondence manner;
the fixed mould frame corresponding to each side of the pier stud is provided with at least one lifting unit;
the lifting units of the fixed die carrier corresponding to the long edges of the pier stud are more than the lifting units of the fixed die carrier corresponding to the short edges of the pier stud.
Furthermore, the number of the creeping formwork upright columns and the number of the lifting units are 10;
the fixed mould frame corresponding to the long edge of the pier stud is provided with 3 lifting units;
the fixed die frame corresponding to the short side of the pier stud is provided with 2 lifting units.
Further, the link is the F type of opening towards the pier stud, the link includes vertical frame, horizontal frame, diagonal brace and connecting bolt, wherein:
the vertical frame is vertically arranged and is parallel to the outer surface of the pier column fixed with the vertical frame, and the lower end of the vertical frame is fixed to the outer mold frame;
the horizontal frame is horizontally arranged, the far end of the horizontal frame is fixed at the upper end of the vertical frame, and the near end of the horizontal frame extends to the vertical center line close to the pier column to the climbing formwork upright column;
the lower end of the inclined strut is fixed at the lower end of the vertical frame, and the upper end of the inclined strut extends upwards and inwards in an inclined mode and is fixed at the near end of the horizontal frame;
the outer die frame is detachably connected with the inner die frame through the connecting bolt;
the lifting unit is arranged between the horizontal frame and the creeping formwork upright post.
Furthermore, the outer template telescopic mechanism is a hydraulic oil cylinder or a screw rod; the inner template telescopic mechanism is a hydraulic oil cylinder or a screw rod.
Further, a working platform is fixed at the upper end of the fixed die carrier;
the lower extreme of fixed die carrier still is fixed with concrete decoration operation platform, concrete decoration operation platform is including all being fixed in the rail of fixed die carrier, enclose fender and footboard, the last spraying health preserving device that installs of concrete decoration operation platform.
Furthermore, the outer die frame and the inner die frame are all of a peripheral closed structure formed by splicing trusses.
Further, still include hoist engine and coaster wheelset, wherein:
the pulley wheel set comprises a wheel frame and a pulley which is rotatably arranged in the wheel frame, and the wheel frame is fixed on the pier stud or the bent cap;
the winch is placed on the ground beside the pier stud, and a cable of the winch is fixed on the fixed die frame after passing around the pulley.
The invention has the beneficial effects that:
the climbing formwork stand column of the steel reinforcement cage embedded in the pier column is used as a supporting point, and a lifting unit (a ball screw, a screw or a hydraulic oil cylinder) is used as lifting power, so that the fixed formwork is lifted, and the climbing formwork stand column is simple in construction and greatly reduced in construction difficulty along with an outer formwork, an outer formwork telescopic mechanism, an inner formwork and an inner formwork telescopic mechanism which are fixed on the fixed formwork.
When the outer template and the inner template are lifted in place, the lifting power unit stops working, so that the outer template and the inner template reach a preset height, at the moment, the outer template telescopic mechanism and the inner template telescopic mechanism respectively work to respectively drive the outer template and the inner template to move close to the pouring positions of the pier stud until the pouring positions are reached, at the moment, concrete is poured into a closed area defined by the outer template and the inner template, after the concrete reaches final set and meets the health maintenance requirement, the outer template telescopic mechanism and the inner template telescopic mechanism respectively drive the outer template and the inner template to move outwards in a reverse mode, then the lifting unit works, the outer template telescopic mechanism, the inner template and the inner template telescopic mechanism which are fixed on the fixed formwork are lifted to the preset pouring height again, and the operation is sequentially circulated until the pier stud is poured to the required height.
The problem of serious potential safety hazard when the formwork overturning system utilizes auxiliary hoisting equipment as lifting is effectively solved, the quality problem that the concrete quality of the slip form system cannot be effectively guaranteed is solved, and the problem that the early construction of a climbing formwork system is complicated is solved; compared with the traditional construction process, the self-elevating pier column formwork system has the characteristics of small formwork consumption, easiness in assembling (the fixed formwork is detachably connected with the connecting frame through the outer wooden frame and the inner formwork, and the outer formwork and the inner formwork are assembled through a plurality of formworks), low cost, high safety, high progress, simplicity in operation and wide application range.
Drawings
Fig. 1 is a top plan (pier cross-sectional) view of an embodiment of a self-elevating pier formwork system;
fig. 2 is a cross-sectional view of section a-a in fig. 1.
In the figure:
1. climbing a formwork upright post;
2. fixing the die carrier; 21. an outer mold frame; 22. an inner mould frame; 23. a connecting frame; 231. a vertical frame; 232. a horizontal frame; 233. a diagonal brace; 234. a connecting bolt; 24. a working platform; 25. a concrete decoration operation platform;
3. a lifting unit;
41. an outer template; 42. an outer template telescoping mechanism;
51. an inner template;
6. pier studs; 61. and (4) hollow.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
Referring to fig. 1 to 2, an embodiment of the present invention discloses a self-elevating pier formwork system, which includes:
the lower end of the creeping formwork upright post is fixed on a reinforcement cage of the pier 61 and vertically extends upwards;
the formwork fixing device comprises a fixed formwork 2, and the fixed formwork comprises an outer formwork 21, an inner formwork 22 and a connecting frame 23, wherein the outer formwork is matched with the outer contour of a pier stud and keeps an outer installation interval, the inner formwork is matched with the inner contour of the pier stud and keeps an inner installation interval, the upper end of the outer formwork is fixed with the upper end of the inner formwork through the connecting frame, and the connecting frame is taken at the upper end of the pier stud;
the lifting unit 3 is arranged between the creeping formwork stand column and the fixed formwork, the fixed formwork is arranged on the creeping formwork stand column in a lifting manner under the driving of the lifting unit, the lifting unit can be a jack or other linear transmission pairs such as a ball screw, and oil inlets of a plurality of jacks are communicated to the same hydraulic pump in order to ensure that the jacks are lifted synchronously;
an outer template 41;
the outer formwork telescoping mechanism 42 is used for mounting the outer formwork on the outer formwork, and the outer formwork is movably mounted on the outer formwork between the outer surface close to/far away from the pier column under the driving of the outer formwork telescoping mechanism;
an inner template 51;
an inner template telescoping mechanism (not shown in the figure, the arrangement mode of the inner template telescoping mechanism is the same as that of the outer template telescoping mechanism arranged on the outer die carrier), the inner template is arranged on the inner die carrier through the inner template telescoping mechanism, and the inner template is movably arranged on the inner die carrier between the inner surfaces close to or far away from the pier stud under the driving of the inner template telescoping mechanism.
The creeping formwork upright post of the reinforcement cage pre-embedded in the pier stud is used as a supporting point, and a lifting unit (a ball screw, a screw or a hydraulic oil cylinder) is used as lifting power, so that the fixed formwork is lifted, and the creeping formwork upright post, the outer formwork telescoping mechanism, the inner formwork and the inner formwork telescoping mechanism which are fixed on the fixed formwork are used, the construction of the creeping formwork upright post is simple, and the construction difficulty is greatly reduced;
when the outer template and the inner template are lifted in place, the lifting power unit stops working, so that the outer template and the inner template reach a preset height, at the moment, the outer template telescopic mechanism and the inner template telescopic mechanism respectively work to respectively drive the outer template and the inner template to move close to the pouring positions of the pier stud until the pouring positions are reached, at the moment, concrete is poured into a closed area defined by the outer template and the inner template, after the concrete reaches final set and meets the health maintenance requirement, the outer template telescopic mechanism and the inner template telescopic mechanism respectively drive the outer template and the inner template to move outwards in a reverse mode, then the lifting unit works, the outer template telescopic mechanism, the inner template and the inner template telescopic mechanism which are fixed on the fixed formwork are lifted to the preset pouring height again, and the operation is sequentially circulated until the pier stud is poured to the required height.
The problem of serious potential safety hazard when the formwork overturning system utilizes auxiliary hoisting equipment as lifting is effectively solved, the quality problem that the concrete quality of the slip form system cannot be effectively guaranteed is solved, and the problem that the early construction of a climbing formwork system is complicated is solved; compared with the traditional construction process, the self-elevating pier column formwork system has the characteristics of small formwork consumption, easiness in assembling (the fixed formwork is detachably connected with the connecting frame through the outer wooden frame and the inner formwork, and the outer formwork and the inner formwork are assembled through a plurality of formworks), low cost, high safety, high progress, simplicity in operation and wide application range.
In addition, the outer formwork is located outside the poured pier stud, the inner formwork is located in the hollow portion 62 of the poured pier stud, and the connecting frame is supported by the top of the poured pier stud, so that good support is formed for the fixed formwork from the outer direction, the inner direction and the lower direction respectively, the integral position of the fixed formwork is guaranteed, namely the positions of the outer formwork and the outer formwork during pouring are guaranteed, and positioning accuracy is guaranteed. Meanwhile, when the formwork is positioned, the fixed formwork is positioned by the creeping formwork stand column in the horizontal direction, and then under the extrusion action of the outer formwork telescoping mechanism and the inner formwork telescoping mechanism, the fixed formwork is integrally and accurately positioned to the creeping formwork stand column, so that the precision of concrete pouring construction is further improved.
It should be noted that the outer mold frame and the inner mold frame are rectangular closed frames, and the climbing mold columns and the lifting units are arranged in a one-to-one correspondence manner;
the fixed die carrier corresponding to each side of the pier stud is provided with at least one lifting unit, so that each side of the fixed die carrier can be synchronously lifted, and the fixed die carrier is prevented from inclining;
the lifting unit that the fixed die carrier that corresponds with the long limit of pier stud set up is more than the lifting unit that the fixed die carrier that corresponds with the minor face of pier stud set up, and the long limit of fixed die carrier is heavier, the minor face is lighter, consequently, sets up more lifting units on the long limit of fixed die carrier to each side of further guaranteeing the fixed die carrier can be promoted in step.
Specifically, creeping formwork stand, lift unit are 10, and its arrangement mode is: the fixed mould frame corresponding to the long edge of the pier stud is provided with 3 lifting units; the fixed die frame corresponding to the short side of the pier stud is provided with 2 lifting units.
It should be further noted that the connecting frame is an F-shaped frame that opens toward the pier stud, and the connecting frame includes a vertical frame 231, a horizontal frame 232, a diagonal brace 233 and a connecting bolt 234, wherein:
the vertical frame is vertically arranged and is parallel to the outer surface of the pier column fixed with the vertical frame, and the lower end of the vertical frame is fixed to the outer mold frame;
the horizontal frame is horizontally arranged, the far end of the horizontal frame is fixed at the upper end of the vertical frame, and the near end of the horizontal frame extends to the vertical center line close to the pier column to the climbing formwork upright column;
the lower end of the inclined strut is fixed at the lower end of the vertical frame, and the upper end of the inclined strut extends upwards and inwards in an inclined mode and is fixed at the near end of the horizontal frame;
the outer die frame and the inner die frame are detachably connected through the connecting bolt;
the lifting unit is arranged between the horizontal frame and the creeping formwork upright post.
It is also noted that the outer template telescopic mechanism is a hydraulic oil cylinder or a screw rod; the inner template telescopic mechanism is a hydraulic oil cylinder or a screw rod.
It should be further noted that a working platform 24 is further fixed at the upper end of the fixed die carrier, and the working platform is used as an operation platform for operating personnel;
the lower extreme of fixed die carrier still is fixed with concrete decoration operation platform 25, concrete decoration operation platform is including all being fixed in the rail of fixed die carrier, enclose fender and footboard, the last spraying health preserving device that installs of concrete decoration operation platform.
It should be further noted that the outer mold frame and the inner mold frame are all of a peripheral closed structure formed by splicing trusses.
It should be further noted that the system also comprises a winch and a pulley wheel set, wherein:
the pulley wheel set comprises a wheel frame and a pulley which is rotatably arranged in the wheel frame, and the wheel frame is fixed on the pier stud or the bent cap;
the winch is placed on the ground beside the pier stud, and a cable of the winch is fixed on the fixed die frame after passing around the pulley. After the cover beam is poured, the cover beam is dismantled by utilizing a winch matched with the sliding wheel assembly, falls down integrally in the dismantling process, falls to the ground and is dismantled.
The fixed die carrier and the working platform are assembled outside the pier stud by using the truss to form the fixed die carrier with the periphery closed, and the fixed die carrier and the working platform are used as a support of a die plate and a bearing structure of an integral die carrier system and are also used as an operating platform.
The outer template is formed by traditional plate templates, the outer template is connected with the fixed die frame through a screw or a hydraulic oil cylinder, the outer template moves inwards to a designed position when erecting the die, and the outer template moves outwards to be connected with the fixed die frame when removing the die and realizes integral lifting. The inner formworks (used during hollow piers) are assembled by traditional plate assembling formworks or by hydraulic cylinders, and are lifted by a lifting system (such as the matching of a winch and a pulley wheel set) after being disassembled.
The concrete modification operation platform is used for safety and health maintenance facilities: the platform is mainly used for construction personnel to manufacture reinforcing steel bars, pour concrete, fix formwork lifting operation and meet requirements of small machines and tools. And a lower hanging platform of the fixed die frame is used as a health maintenance operation and pier column surface treatment platform, and a spraying health maintenance system is arranged on the platform. The safety and health-care device mainly comprises a railing, a fence, a pedal and a spraying and health-care system, wherein safety and health-care facilities are fixed together with a fixed die set and are lifted upwards along with the fixed die set.
The construction process comprises the following steps: the outer formwork and the inner formwork are usually formed formworks, each set of formworks is 2.4 meters in height, the concrete effectively poured in each cycle is 2.25 meters in height, the formwork panel is made of 6mm steel plates or formed wood molds, and the inner formwork and the outer formwork are lifted by a self-elevating pier column formwork system.
1. Construction procedure
(1) The 1 st segment utilizes tower crane or crane to hang creeping formwork stand in the fixed die carrier and installs, corresponds with the reinforcing bar of pre-buried in pier stud steel reinforcement cage and is connected to the installation template, and pour pier shaft concrete.
(2) And after the 1 st section is poured and reaches the stripping strength, the template moves outwards and is withdrawn from the fixed die frame, and then the template is lifted upwards to the next section by using the lifting unit. And sequentially and circularly upwards forming uninterrupted operation of binding steel bars, removing a formwork, self-elevating the formwork, measuring and positioning, measuring elevation, pouring concrete and maintaining until reaching the design height.
(3) And (3) bent cap construction: after the pier stud construction is completed, the formwork working platform can be used as an operation platform for bent cap construction, and the bent cap is used for binding reinforcing steel bars and casting concrete in situ according to the traditional process.
(4) Dismantling the formwork system: after the bent cap is poured, the whole die carrier system is fallen by utilizing the winch in cooperation with the pulley wheel set, and then the die carrier system is dismantled after the die carrier system falls to the ground.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element 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 terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, article, or apparatus.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (8)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210829880.8A CN115058982A (en) | 2022-07-14 | 2022-07-14 | Self-elevating pier formwork system |
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| CN202210829880.8A CN115058982A (en) | 2022-07-14 | 2022-07-14 | Self-elevating pier formwork system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115897411A (en) * | 2022-12-29 | 2023-04-04 | 云南东皇钢模有限公司 | A hydraulic self-lifting formwork structure and construction technology for high piers |
| CN117286800A (en) * | 2023-11-13 | 2023-12-26 | 中交二公局第一工程有限公司 | A rectangular high pier support structure and construction method |
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