CN109518813B - Reinforced standard Bailey truss assembled jacking formwork platform and installation method thereof - Google Patents
Reinforced standard Bailey truss assembled jacking formwork platform and installation method thereof Download PDFInfo
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- CN109518813B CN109518813B CN201811433726.9A CN201811433726A CN109518813B CN 109518813 B CN109518813 B CN 109518813B CN 201811433726 A CN201811433726 A CN 201811433726A CN 109518813 B CN109518813 B CN 109518813B
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- steel wire
- wire rope
- platform
- bailey
- bailey truss
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/20—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like
- E04G11/28—Climbing forms, i.e. forms which are not in contact with the poured concrete during lifting from layer to layer and which are anchored in the hardened concrete
Abstract
The invention discloses a reinforced standard Bailey truss assembled jacking formwork platform, which is characterized in that a main beam, secondary beams and a peripheral frame are formed by mutually assembling a plurality of standard Bailey trusses, the main beams are vertically and horizontally connected through Bailey truss connecting pieces to form a main body framework, the secondary beams are vertically and horizontally connected in a staggered manner to form an integral framework structure of a truss platform with the main body framework, a reinforcing device is arranged on the main beam, the reinforcing device comprises a bearing piece, a steel wire rope, two lug plates and a tension sensor, the bearing piece is vertically arranged at the bottom of a lower chord of the Bailey truss of the main beam, and the two lug plates are symmetrically arranged at the bottoms of column heads at two ends of the main beam; two ends of the supporting piece are respectively connected with the ear plates through steel wire ropes; and tension sensors are symmetrically arranged on the steel wire ropes on the two sides of the supporting piece. The invention also provides a method for installing the reinforced standard Bailey frame assembly type jacking formwork platform. The invention has the beneficial effects that: the invention realizes the reinforcement of the top die platform on the premise of not changing the structure of the top die platform.
Description
Technical Field
The invention relates to the field of building construction, in particular to a reinforced standard Bailey frame assembly type jacking formwork platform and an installation method thereof.
Background
At present, as a novel formwork system, a standard Bailey frame assembly type jacking formwork system is widely applied to the construction process of each large super high-rise. The top die system forms a closed core barrel construction platform through the supporting box girder, the jacking oil cylinder, the standard supporting upright post, the standard Bailey sheet and the standard hanging rack, and has the characteristics of light dead weight, quick installation, high standardization, strong stability and the like. However, due to the particularity of the core barrel, the reinforcement of the top formwork system is faced with a great problem when it comes to the large span platform girder. The general strengthening method is as follows: and (3) binding and welding channel steel and angle steel on the upper chord, the lower chord or the web member of the bailey truss to increase the section of the member. However, the method can damage the main beam structure of the Bailey sheet in a large range and influence the recycling and turnover use of the Bailey sheet.
Disclosure of Invention
The invention aims to provide a reinforced standard Bailey frame assembly type jacking formwork platform and an installation method thereof, which do not damage the main structure of the platform, aiming at the defects of the prior art.
The technical scheme adopted by the invention is as follows: a structure reinforcing device comprises a bearing piece, a steel wire rope and lug plates symmetrically arranged on two sides of the bearing piece; the supporting piece is arranged at the bottom of the middle of the main body structure, the lug plates are fixed at the upper parts of two ends of the main body structure, and two ends of the supporting piece are respectively connected with the lug plates through steel wire ropes; and the steel wire ropes on the two sides of the supporting piece are symmetrically provided with a turn buckle and a tension sensor.
A reinforced standard Bailey truss assembled jacking formwork platform comprises main beams, secondary beams and peripheral frames, wherein the main beams are formed by mutually assembling a plurality of standard Bailey trusses, the main beams are vertically and horizontally connected through Bailey truss connecting pieces to form a main body framework, the secondary beams are vertically and horizontally connected in a staggered manner to form an integral framework structure of a truss platform with the main body framework, a reinforcing device is arranged on the main beams, the reinforcing device comprises bearing pieces, steel wire ropes, ear plates and tension sensors, the bearing pieces are vertically arranged at the bottoms of lower chords of the Bailey trusses of the main beams, the ear plates are two in number and symmetrically arranged at the bottoms of column heads at two ends of the main beams; two ends of the supporting piece are respectively connected with the ear plates through steel wire ropes; and tension sensors are symmetrically arranged on the steel wire ropes on the two sides of the supporting piece.
According to the scheme, the reinforcing device further comprises two flower basket bolts which are symmetrically arranged, the bearing piece is connected with one ends of the flower basket bolts through steel wire ropes, and the other ends of the flower basket bolts are connected with the lug plates through the steel wire ropes.
According to the scheme, the supporting piece is formed by welding two longitudinal connecting rods and a plurality of transverse connecting rods which are arranged on the longitudinal connecting rods at intervals; a plurality of limiting bolts are symmetrically arranged on the two longitudinal connecting rods at intervals and hung on the lower chord of the bailey truss of the main beam; and a U-shaped hoop connected with a steel wire rope is also arranged on the longitudinal connecting rod.
According to the scheme, the bearing piece is further provided with an oblique pull rod, and two ends of the oblique pull rod are respectively located at the connecting position of the transverse connecting rod and the longitudinal connecting rod.
According to the scheme, the turn buckle type pull rod bolt 2 comprises two symmetrically arranged break buckle type pull rod bolts, the inner ends of the two break buckle type pull rod bolts are threaded ends and are connected through the middle adjusting sleeve in a threaded mode, and the outer ends of the two break buckle type pull rod bolts are connected with the steel wire rope respectively.
A method for installing an assembled jacking formwork platform of a reinforced standard Bailey truss comprises the following steps:
step one, building an integral frame structure of a jacking formwork platform, providing each component of the reinforcing device, and ensuring no-load of a main beam;
step two, modeling calculation is carried out, the tension range of the steel wire rope under the heavy load action of different scales is judged in advance, and reference is provided for the subsequent installation process;
thirdly, vertically suspending and mounting the bearing piece on a lower chord of the main beam bailey truss by using a limit bolt;
step four, welding the lug plates below the top steel plates of the column heads at two ends of the main beam in a centering manner;
step five, connecting the steel wire rope A section with the lug plate: one end of each of the two steel wire rope sections A respectively penetrates through the reserved holes of the lug plates and is locked and fixed by the steel wire rope clamping heads;
step six, connecting the turn buckle and the steel wire rope A section: loosening the turn buckle bolt A, enabling the steel wire rope A section to penetrate through the shackle type pull rod bolt at one end of the turn buckle bolt A, and locking and fixing the steel wire rope A section by using a steel wire rope clamping head;
seventhly, connecting the other end of the turn buckle A with a steel wire rope B section, and enabling the steel wire rope B section to penetrate through two U-shaped hoops on the bearing piece and be connected with the turn buckle B installed on the other side;
and step eight, symmetrically installing the tension sensors on the steel wire rope, and completing the installation of the whole reinforcing device to be used and debugged.
The invention has the beneficial effects that:
1. the steel wire rope penetrates through the U-shaped hoop to lift the bearing piece, so that a platform main beam is supported, the suspension type mounting structure has strong self-balancing condition capability, after the steel wire rope is tensioned and stressed, the bearing piece is hardly subjected to horizontal force caused by the steel wire rope, and additional horizontal force cannot be transmitted to the main beam;
2. the lug plate adopts a round steel cylinder column and is welded under a steel plate at the top of the head of the top die column, so that the integral strength is high, and the torque generated by different degrees of eccentric action of the steel wire rope can be resisted;
3. the tension sensor adopts side-pressure type tension sensors, is directly and symmetrically arranged on the left side and the right side of the steel wire rope, can monitor and measure the tension of the steel wire rope in real time, and ensures that the device reinforces the girder of the top die platform within a controllable range under the guidance of a calculation result;
4. the invention has the advantages of reasonable design, simple processing, low cost and convenient installation, and does not influence the integral construction of the top die.
Drawings
FIG. 1 is a plan view of a reinforcement device in accordance with an embodiment of the present invention.
Fig. 2 is a partially enlarged view of fig. 1.
Fig. 3 is an installation front view of the present embodiment.
Fig. 4 is a partially enlarged view of fig. 3.
FIG. 5 is a first schematic structural diagram of the supporting member of the present embodiment.
Fig. 6 is a left side view of fig. 5.
Fig. 7 is a front view of fig. 5.
Fig. 8 is a second schematic structural view of the supporting member in this embodiment.
Fig. 9 is a left side view of fig. 8.
Fig. 10 is a front view of fig. 8.
Fig. 11 is a schematic structural view of the lag bolt in this embodiment.
Fig. 12 is a schematic view of the thread structure of the trip type stay bolt in this embodiment.
Fig. 13 is a schematic view illustrating connection between a tension sensor and a steel wire rope in this embodiment.
Fig. 14 is a top view of fig. 13.
Wherein: 1-steel wire rope, 1-1 steel wire rope A section, 1-2 steel wire rope B section,
2-a turnbuckle, 3-a support, 4-an ear plate, 5-a main beam, 6-a column cap, 7-a U-shaped hoop, 8-a limit bolt, 9-a longitudinal connecting rod, 10-a transverse connecting rod, 11-a shackle type pull rod bolt, 12-a middle adjusting sleeve rod, 13-a thread and 14-a tension sensor; 15-bailey frames; 16. an oblique pull rod.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
A structure reinforcing device as shown in fig. 1-4, comprising a supporting member 3, a steel wire rope 1, and ear plates 4 symmetrically installed at two sides of the supporting member 3; the supporting piece 3 is arranged at the middle bottom of the main body structure, the ear plates 1 are fixed at the upper parts of the two ends of the main body structure, and the two ends of the supporting piece 3 are respectively connected with the ear plates 4 through the steel wire ropes 1; the turn buckle 2 and the tension sensor 14 are symmetrically arranged on the steel wire ropes at the two sides of the supporting piece.
As shown in fig. 1 to 4, the reinforced standard bailey frame assembled jacking formwork platform is composed of main beams 5, secondary beams and peripheral frames, wherein the main beams 5 are formed by mutually assembling a plurality of standard bailey frames 15, the main beams 5 are connected in a criss-cross manner through bailey frame connecting pieces to form a main framework, the secondary beams are connected in a criss-cross manner and form an integral framework structure of a truss platform on the main framework, and the peripheral frames are fixed on the outer side of the integral framework structure to form the whole truss platform structure (in the prior art, details are not repeated); the main beam 5 is provided with a reinforcing device, the reinforcing device comprises a supporting piece 3, a steel wire rope 1, two lug plates 4 and a tension sensor 14, the supporting piece 3 is vertically arranged at the bottom of a lower chord of a Bailey truss 15 of the main beam 5, and the two lug plates 4 are symmetrically welded at the bottoms of column heads 6 at two ends of the main beam 5; two ends of the supporting piece 3 are respectively connected with the ear plates 4 through the steel wire ropes 1; and tension sensors 14 are symmetrically arranged on the steel wire ropes 1 at two sides of the supporting piece 3.
The steel wire rope 1 comprises a steel wire rope A section 1-1 and a steel wire rope B section 1-2; the reinforcing device also comprises two symmetrically arranged turn bolts 2, and the outer ends of the two turn bolts 2 are respectively connected with the two lug plates 4 through steel wire rope sections A1-1; one end of the steel wire rope B section 1-2 is connected with the inner end of one of the turn bolts 2 and then is connected with the inner end of the other turn bolt 2 by winding the bearing piece 3.
Preferably, as shown in fig. 5 to 7, the supporting member 3 is formed by welding two longitudinal connecting rods 9 and a plurality of transverse connecting rods 10 installed on the longitudinal connecting rods 9 at intervals (or fixedly connected by other methods); a plurality of limiting bolts 8 are symmetrically arranged on the two longitudinal connecting rods 9 at intervals and are suspended and mounted on the lower chord of the bailey truss 15 of the main beam 5 by utilizing the limiting bolts; the longitudinal connecting rod 9 is also provided with a U-shaped hoop 7 connected with the steel wire rope 1, as shown in figures 3-5. When the row spacing of the bailey frames 15 of the main beam 5 is large, the oblique pull rod 16 can be arranged, and two ends of the oblique pull rod 16 are respectively located at the connecting positions of the transverse connecting rod 9 and the longitudinal connecting rod 10, as shown in fig. 8-10. In this embodiment, the transverse link 10, the longitudinal link 9 and the diagonal tie bar 16 are all made of steel pipes.
Preferably, as shown in fig. 11, the turn buckle bolt 2 includes two symmetrically arranged shackle-type stay bolts 11, inner ends of the two shackle-type stay bolts 11 are threaded ends and are in threaded connection through a middle adjusting sleeve 12, and outer ends of the two shackle-type stay bolts 11 are respectively connected with the steel wire rope 1; the threaded end of the shackle type stay bolt 11 is provided with trapezoidal threads as shown in fig. 12.
In the invention, the supporting piece 3 is vertically arranged on the lower chord of the Bailey truss 15 of the main beam 5 by using the longitudinal limiting bolt 8 to play a role of supporting the main beam 5 of the platform, and the longitudinal limiting bolt 8 only attaches the supporting piece 3 to the lower chord of the Bailey truss 15 to restrain the longitudinal displacement of the supporting piece 3 and not restrain the horizontal displacement of the supporting piece 3 along the length direction of the main beam 5; the turn buckle 2 is arranged between the steel wire rope A section 1-1 and the steel wire rope B section 1-2 and is used for tensioning the steel wire rope 1 and actively adjusting the stress of the steel wire rope 1; the ear plate 4 is a round steel cylinder column, is welded and installed at the bottom of an upper steel plate of the column head 6 and is used for connecting and fixing the steel wire rope 1; the steel wire rope 1 penetrates through the top of the supporting piece 3 and is transitionally connected with the lug plate 4 through the turn buckle 2; the tension sensor 14 is a side pressure type tension sensor, is directly mounted on the steel wire rope 1, and is used for monitoring and measuring the tension of the steel wire rope 1 at any time. In this embodiment, the lag bolt 2 includes a lag bolt a and a lag bolt B.
A method for installing an assembled jacking formwork platform of a reinforced standard Bailey truss comprises the following steps:
step one, building an integral frame structure of a jacking formwork platform, providing each component of the reinforcing device, and ensuring that a main beam 5 is unloaded;
step two, modeling calculation is carried out, the tension range of the steel wire rope 1 under the heavy load action of different scales is judged in advance, and reference is provided for the subsequent installation process;
thirdly, vertically suspending and mounting the supporting piece 3 on a lower chord of the main beam Bailey truss 15 by using a limit bolt 8;
step four, welding the ear plates 4 below the steel plates at the tops of the column heads 6 at the two ends of the main beam 5 in a centering manner;
step five, respectively enabling one ends of the sections 1-1 of the two steel wire ropes A to penetrate through the reserved holes of the two lug plates 4, and locking and fixing the steel wire ropes by using steel wire rope clamping heads;
step six, connecting the turn buckle 1 with the steel wire rope A section 1-1: loosening the turn buckle bolt A/B, enabling the steel wire rope A section 1-1 to penetrate through the shackle type draw bar bolt 11 at one end of the turn buckle bolt A/B, and locking and fixing the steel wire rope A section by using a steel wire rope clamping head;
seventhly, connecting the other end of the turn buckle A with a section 1-2 of the steel wire rope B, and then enabling the section B1-2 of the steel wire rope to penetrate through two U-shaped hoops 7 on the supporting piece 3 and be connected with the turn buckle B of which the other side is connected with the section 1-1 of the steel wire rope A;
and step eight, symmetrically installing the tension sensors 14 on the steel wire rope 1, and completing the installation of the whole reinforcing device to be used and debugged.
The device is arranged, the turn buckle 2 is adjusted to tighten the steel wire rope 1 step by step, and the supporting piece 3 is lifted to support the platform main beam 5 to play a role in reinforcement; and then, gradually loading on the main beam 5, observing the change condition of the tension force displayed by the tension sensor 14, and controlling the loading amount under the guidance of a calculation result, thereby ensuring the safety of the whole structure within the range of the reinforcing capacity of the reinforcing device.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the above-mentioned embodiments, or equivalent substitutions of some technical features, but any modifications, equivalents, improvements and the like within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (5)
1. A reinforced standard Bailey truss assembled jacking formwork platform comprises main beams, secondary beams and peripheral frames, wherein the main beams are formed by mutually assembling a plurality of standard Bailey trusses, the main beams are vertically and horizontally connected through Bailey truss connecting pieces to form a main body framework, the secondary beams are vertically and horizontally connected in a staggered manner and form an integral framework structure of a truss platform on the main body framework, and the reinforced standard Bailey truss assembled jacking formwork platform is characterized in that a reinforcing device is arranged on the main beams, the reinforcing device comprises a bearing piece, a steel wire rope, two lug plates and a tension sensor, the bearing piece is vertically arranged at the bottom of a lower chord of the Bailey truss of the main beams, and the two lug plates are symmetrically arranged at the bottoms of column heads at two ends of; two ends of the supporting piece are respectively connected with the ear plates through steel wire ropes; tension sensors are symmetrically arranged on the steel wire ropes on the two sides of the supporting piece; the supporting piece is formed by welding two longitudinal connecting rods and a plurality of transverse connecting rods which are arranged on the longitudinal connecting rods at intervals; a plurality of limiting bolts are symmetrically arranged on the two longitudinal connecting rods at intervals and hung on the lower chord of the bailey truss of the main beam; and a U-shaped hoop connected with a steel wire rope is also arranged on the longitudinal connecting rod.
2. The reinforced assembled jacking formwork platform of a standard Bailey truss of claim 1, wherein the reinforcing means further comprises two symmetrically arranged turn-key bolts, the support member is connected to one end of the turn-key bolt through a wire rope, and the other end of the turn-key bolt is connected to the ear plate through a wire rope.
3. The reinforced modular bailey frame fabricated jacking formwork platform of claim 1, wherein said support member further comprises an inclined tie bar, and both ends of said inclined tie bar are respectively located at the junction of said transverse connecting bar and said longitudinal connecting bar.
4. The assembled jacking formwork platform of claim 2, wherein the turnbuckle comprises two symmetrically arranged break-out tie bolts, the inner ends of the two break-out tie bolts are threaded ends and are connected by a middle adjusting sleeve, and the outer ends of the two break-out tie bolts are respectively connected with the steel wire rope.
5. The method for installing the reinforced standard Bailey truss assembled jacking formwork platform is characterized by comprising the following steps of:
step one, building an integral frame structure of a jacking formwork platform, providing each component of the reinforcing device in claim 1, and ensuring no-load of a main beam;
step two, modeling calculation is carried out, the tension range of the steel wire rope under the heavy load action of different scales is judged in advance, and reference is provided for the subsequent installation process;
thirdly, vertically suspending and mounting the bearing piece on a lower chord of the main beam bailey truss by using a limit bolt; step four, welding the lug plates below the top steel plates of the column heads at two ends of the main beam in a centering manner;
step five, connecting the steel wire rope A section with the lug plate: one end of each of the two steel wire rope sections A respectively penetrates through the reserved holes of the lug plates and is locked and fixed by the steel wire rope clamping heads;
step six, connecting the turn buckle and the steel wire rope A section: loosening the turn buckle bolt A, enabling the steel wire rope A section to pass through the shackle type pull rod bolt at one end of the turn buckle bolt A, and locking and fixing the steel wire rope A section by using a steel wire rope clamping head;
seventhly, connecting the other end of the turn buckle A with a steel wire rope B section, and enabling the steel wire rope B section to penetrate through two U-shaped hoops on the bearing piece and be connected with the turn buckle B installed on the other side;
and step eight, symmetrically installing the tension sensors on the steel wire rope, and completing the installation of the whole reinforcing device to be used and debugged.
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| CN201811433726.9A CN109518813B (en) | 2018-11-28 | 2018-11-28 | Reinforced standard Bailey truss assembled jacking formwork platform and installation method thereof |
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| CN201811433726.9A CN109518813B (en) | 2018-11-28 | 2018-11-28 | Reinforced standard Bailey truss assembled jacking formwork platform and installation method thereof |
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| KR100656284B1 (en) * | 2005-01-24 | 2006-12-11 | 주식회사 한기엔지니어링건축사사무소 | Anchoring structure of external wire for tension and shear reinforcement, and method for reinforcing a building thereof |
| CN201011128Y (en) * | 2007-03-07 | 2008-01-23 | 于继洪 | Support tool for small scale cast-in-situ bottom die dismounting |
| CN203669363U (en) * | 2013-12-13 | 2014-06-25 | 中建三局第一建设工程有限责任公司 | Lateral connecting device for middle of main truss of bailey frame |
| CN206110661U (en) * | 2016-07-12 | 2017-04-19 | 云南昆钢钢结构股份有限公司 | Floor of magnetism suspension type removable mold board |
| CN206144172U (en) * | 2016-08-24 | 2017-05-03 | 通州建总集团有限公司 | Equipment standard platform of unloading of encorbelmenting |
| CN111677329A (en) * | 2017-01-12 | 2020-09-18 | 叶香竹 | Construction method for reinforcing concrete beam by prestressed steel wire rope |
| CN207513217U (en) * | 2017-10-10 | 2018-06-19 | 浙江华咨结构设计事务所有限公司 | A kind of steel structure house bending resistance folded structure |
| CN207595748U (en) * | 2017-12-08 | 2018-07-10 | 杭州奔马化纤纺丝有限公司 | A kind of cutting agency |
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Effective date of registration: 20221125 Address after: 3301, Office Building 3B, Vanke Times Square, No. 85, Longcheng Avenue, Shangjing Community, Longcheng Street, Longgang District, Shenzhen, Guangdong 518172 Patentee after: China Construction Third Engineering Bureau Science and Innovation Industry Development Co.,Ltd. Address before: 430040, No. 1, Soochow Road, Dongxihu District, Hubei, Wuhan Patentee before: CHINA CONSTRUCTION THIRD BUREAU FIRST ENGINEERING Co.,Ltd. |