CN110735399B - Installation method of cast-in-place support beam system capable of automatically rising or falling - Google Patents
Installation method of cast-in-place support beam system capable of automatically rising or falling Download PDFInfo
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- CN110735399B CN110735399B CN201910964830.9A CN201910964830A CN110735399B CN 110735399 B CN110735399 B CN 110735399B CN 201910964830 A CN201910964830 A CN 201910964830A CN 110735399 B CN110735399 B CN 110735399B
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
Abstract
The invention discloses an installation method of a cast-in-place support beam system capable of automatically rising or falling, wherein a plurality of cast-in-place support beam standard joints with a certain height are longitudinally and transversely installed on the ground, the outer side of each cast-in-place support beam standard joint is sleeved with a self-rising outer jacket frame, 2 adjacent transversely-arranged self-rising outer jacket frames are connected through an electric hoist track beam and a bearing cross beam, the top of the bearing cross beam is longitudinally fixed with a cast-in-place support standard beam piece system, an electric hoist on the electric hoist track beam lifts the standard joint upwards and then transversely moves the standard joint and fixes the standard joint on the top of the cast-in-place support beam standard joint, then the self-rising outer jacket frame ascends along the cast-in-place support beam standard joint, and repeatedly lifts and fixes the standard joint again until the cast-in-place support. According to the mounting method, a series of operation works such as mounting, dismounting and hoisting of the cast-in-place support beam can be realized only by a small amount of manual cooperation.
Description
Technical Field
The invention relates to a method for installing a cast-in-place support beam system, in particular to a method for installing a cast-in-place support beam system capable of automatically ascending or descending.
Background
In highway bridge engineering construction, often can involve cast-in-place box girder construction, the box girder often has better lateral stability and wholeness, consequently often designs at highway intercommunication position, when constructing this type of position in the past, often adopts full hall support or sets up the mode construction of door opening (the door opening is applicable to down has the same-row demand condition), but this kind of mode is if meet the clear high very big condition of box girder, its inferior aspect is just more obvious, mainly shows: firstly, if the net height of the box girder is very high, the demand of the full-space support is very high, and the requirement on the foundation is higher as the support is higher, so that on one hand, a large number of supports are stacked on the site and are not beneficial to on-site management, and on the other hand, the high full-space support occupies a very large foundation, which is very disadvantageous to basic treatment and inspection; secondly, the lifting equipment is limited due to the fact that the full framing is too large, the lifting height of the lifting equipment is limited generally within 30m, and if the lifting height exceeds 30m, the existing lifting equipment is insufficient due to the fact that the existing lifting equipment is excessive; thirdly, the construction period of the tall and big full framing is long, and a large amount of labor is consumed, so that not only can the labor cost be increased, but also the construction safety risk is increased greatly.
Disclosure of Invention
The invention aims to provide an installation method of a cast-in-place support beam system capable of automatically lifting or descending. According to the mounting method, a series of operation works such as mounting, dismounting and hoisting of the cast-in-place support beam can be realized only by a small amount of manual cooperation. On one hand, the method can greatly improve the working efficiency of erecting and dismantling the bracket; on the other hand has also greatly reduced constructor's construction risk, and this cast-in-place support beam system can have enough to meet the need the use simultaneously, greatly reduced the marginal cost of construction.
The technical scheme of the invention is as follows: a method for installing a cast-in-place support beam system capable of automatically lifting or descending comprises the steps of longitudinally and transversely installing part of a plurality of cast-in-place support beam standard joints on the ground, sleeving a self-lifting outer sleeve frame on the outer side of the part of the support body of each cast-in-place support beam standard joint, connecting 2 transversely arranged adjacent self-lifting outer sleeve frames through an electric hoist track beam and a bearing cross beam, longitudinally fixing a cast-in-place support standard beam piece system on the top of the bearing cross beam, lifting the standard section upwards by an electric hoist on the electric hoist track beam, transversely moving the standard section and fixing the standard section on the top of the cast-in-place support beam standard joint, then climbing the self-lifting outer sleeve frame upwards along the cast-in-place support beam standard joint, repeatedly lifting and fixing the standard section again until the cast-in-place support beam standard.
In the installation method of the cast-in-place support beam system capable of automatically lifting or descending, the installation method comprises the following steps:
A. fixing a bottom section of a standard section of the cast-in-place support beam on the ground, and overlapping and fixedly stacking a middle section of a plurality of standard sections on the bottom section;
B. installing a lifting jack on the self-lifting outer sleeve frame, lifting and sleeving the self-lifting outer sleeve frame outside the installed cast-in-place support beam standard knot, and fixedly connecting the self-lifting outer sleeve frame and the cast-in-place support beam standard knot through a temporary fixedly connecting device;
C. an electric hoist track beam and a bearing beam are fixedly arranged between 2 self-lifting outer sleeves which are transversely arranged, and an electric hoist is arranged on the electric hoist track beam;
D. splicing a plurality of cast-in-place support standard beam sections into a plurality of sets of cast-in-place support standard beam sheet systems on the ground, hoisting and fixing the cast-in-place support standard beam sheet systems on the top of the bearing cross beam, and hoisting and fixing the distribution beam on the top of the cast-in-place support standard beam sheet systems;
E. lifting the middle section to be installed upwards through the electric hoist, moving the middle section to be installed along the electric hoist track beam to enable the middle section to be installed to be located above the standard section of the fixedly installed cast-in-place support beam, and then fixedly connecting the middle section to be installed with the middle section below the middle section;
F. e, repeating the step E, and installing the other middle section to be installed above the middle section which is fixedly installed at the topmost end of the other end of the same electric hoist track beam;
G. fixing a lifting jack above the topmost middle section, loosening the temporary fixedly connecting device between the self-lifting outer sleeve frame and the middle section, starting the lifting jack, and lifting the self-lifting outer sleeve frame upwards;
H. fixedly connecting the lifted self-lifting outer sleeve frame with the topmost middle section through a temporary fixedly connecting device, and separating and lifting the lifting jack from the topmost middle section and then lifting upwards;
J. and E, repeating the steps E-H until all the middle sections are completely installed, and then repeating the steps E-H to fix the top section of the standard section on the middle section at the top, so that the whole cast-in-place support beam system is completely installed.
In the installation method of the cast-in-place support beam system capable of automatically lifting or descending, after the cast-in-place support beam system is installed and box beam construction is completed, the cast-in-place support beam system is descended and dismantled according to the reverse operation of the mode; and G, synchronously lifting the self-lifting outer sleeve frame on the standard section of each cast-in-place support beam upwards.
In the installation method of the cast-in-place support beam system capable of automatically lifting or descending, the temporary fixedly connecting device comprises a section connecting lug plate arranged on the outer side wall of the standard section and a sleeve frame positioning lug plate arranged on the inner side wall of the self-lifting outer sleeve frame, and when the self-lifting outer sleeve frame is fixed on the standard section, the connecting lug plate and the sleeve frame positioning lug plate are connected together through a limiting bolt.
In the installation method of the cast-in-place support beam system capable of automatically lifting or descending, the top and the bottom of each standard segment are respectively provided with a segment flange connecting plate, when two adjacent standard segments are connected, the two standard segment flange connecting plates are fixedly connected by using bolts, and when the lifting jack is connected with the standard segment, the bottom of the lifting jack is fixed on the segment flange connecting plate at the top of the standard segment.
In the installation method of the cast-in-place support beam system capable of automatically ascending or descending, the standard section and the self-ascending and descending outer sleeve frame are both frame structures formed by connecting rod pieces arranged longitudinally, transversely, vertically and/or obliquely, wherein the middle upper parts of the two corresponding side surfaces of the 2 self-ascending and descending outer sleeve frames connected with each other through the electric hoist track beam are hollowed out, and the top section is of a square cone structure.
In the method for installing the self-elevating or self-descending cast-in-place support beam system, in the step C, a temporary support is fixedly arranged at the center of the bottom of the top of the self-elevating outer jacket frame, the electric hoist track beam and the bearing cross beam are fixed on the temporary support, the top of the bearing cross beam is higher than that of the movable hoist track beam, during the installation process of the top section, firstly, a sand box cushion block is fixedly installed at the top of the top section, after the top section is installed, the self-elevating outer jacket frame is descended by using the elevating jack, so that the temporary support falls on the sand box cushion block, and then the self-elevating outer jacket frame is fixedly connected with the middle section through the hoop member.
In the installation method of the cast-in-place support beam system capable of automatically lifting or descending, after the temporary support falls on the sand box cushion block, the temporary support is connected with the top section through the stay cable, meanwhile, the cross arm is hoisted through the electric hoist, the cross arm is fixed on 2 horizontally adjacent cast-in-place support beam standard sections through the hoop component, and the vertically arranged cast-in-place support beam standard section is connected with the foundation beside or the cast-in-place support beam standard section through the vertical stabilizing steel wire rope.
In the installation method of the cast-in-place support beam system capable of automatically ascending or descending, 2 cross rods are arranged at the top of the self-ascending and descending outer support frame, each cross rod is provided with 2 fixed penetrating holes of the lifting jacks, and the electric hoist and the lifting jacks are controlled by the lifting control system.
In the step C, when the load-bearing beam is installed, limit stops are fixedly and uniformly arranged on the top of the load-bearing beam at intervals, in the step D, a plurality of cast-in-place support standard beam sections are assembled into a plurality of sets of cast-in-place support standard beam sheet systems on the ground and are longitudinally hoisted and fixed on the top of the load-bearing beam, in the fixing process, the bottoms of the cast-in-place support standard beam sheet systems are clamped into the limit stops, the two sets of horizontally adjacent cast-in-place support standard beam sheet systems are fixedly connected through connecting rod pieces which are longitudinally, transversely and obliquely arranged, and then the distribution beam is hoisted and fixed.
The invention has the beneficial effects that: compared with the prior art, the mounting method of the cast-in-place support beam system can realize the operation of the cast-in-place box beam with the height of 60m and the span of 40m in a non-adhesion state by a small amount of manual cooperation after the basic sections are mounted on the ground, greatly shortens the time for setting and removing the support, and simultaneously forms a wide vehicle or pedestrian passage under the support without additionally setting up a door opening because the support only has two rows of upright posts. Moreover, because the standard beam section adopts a two-end cantilever mode, the stress problem of each rod piece is optimized to the greatest extent by using the self weight of materials, and the construction safety is ensured.
Drawings
FIG. 1 is a schematic structural view of the present invention after completion of lifting;
FIG. 2 is a schematic side view of FIG. 1;
FIG. 3 is a schematic structural view of FIG. 2 with the self-elevating jacket frame removed;
FIG. 4 is a schematic structural view of a self-elevating jacket frame;
FIG. 5 is a schematic top view of the structure of FIG. 4;
FIG. 6 is a schematic diagram of a self-elevating jacket frame lifting standard segment;
FIG. 7 is a schematic structural view of a bottom or middle segment;
FIG. 8 is a schematic structural view of the top segment;
FIG. 9 is a schematic structural view of a standard beam segment of the cast-in-place support;
FIG. 10 is a schematic view of the present invention as it goes up and down;
reference numerals: 1-standard beam section of a cast-in-place bracket, 2-self-lifting outer sleeve frame, 3-electric hoist track beam, 4-bearing beam, 5-standard beam sheet system of the cast-in-place bracket, 6-electric hoist, 7-bottom section, 8-middle section, 9-lifting jack, 10-standard beam sheet section of the cast-in-place bracket, 11-distribution beam, 12-top section, 13-section connecting lug plate, 14-sleeve frame positioning lug plate, 15-limit bolt, 16-section flange connecting plate, 17-temporary support, 18-sand box cushion block, 19-hoop component, 20-cross bar, 21-fixed penetrating hole, 22-stay cable, 23-cross brace, 24-longitudinal stable steel wire rope, 25-lifting control system, 26-limit stop block, 27-connecting the rods.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
The embodiment of the invention comprises the following steps: a method for installing a cast-in-place support beam system capable of automatically rising or falling is disclosed, as shown in attached figures 1-10, a part of a frame body of a plurality of cast-in-place support beam standard joints 1 is installed on the ground along the length direction of a box beam and the width direction of the box beam according to box beam construction drawings, the height of the frame body is about 9m, and a self-rising outer sleeve frame 2 is convenient to hoist. By taking the drawing as an example, in the embodiment, 2 groups of cast-in-place support beam standard joints 1 are arranged along the length direction of the box beam, namely the longitudinal direction, and each group of cast-in-place support beam standard joints 1 is composed of 2 to 3 cast-in-place support beam standard joints 1 along the width direction, namely the transverse direction, of the box beam, and the specific installation number is determined according to the size of the box beam. The outer jacket frame 2 that rises certainly is fixedly cup jointed in 1 outside of every cast-in-place support beam standard knot, and the outer jacket frame 2 that rises certainly of adjacent 2 horizontal settings is connected through electric block track roof beam 3 between 2, and adjacent 2 tops of the outer jacket frame 2 that rise certainly are connected through bearing beam 4, and bearing beam 4 top vertically is fixed with cast-in-place support standard beam piece system 5. Because the height of the cast-in-place support beam standard knot 1 installed in the early stage is only about 9m and is far lower than the design height, the height of the cast-in-place support beam standard knot 1 needs to be increased. The heightening mode is that the standard section is lifted upwards through an electric hoist 6 on an electric hoist track beam 3 and then transversely moved along the electric hoist track beam 3, so that the standard section is placed at the topmost end of an installed cast-in-place support beam standard section 1 and is fixed to the top of the cast-in-place support beam standard section 1, then the self-lifting outer sleeve frame 2 ascends along the cast-in-place support beam standard section 1, the standard section is lifted and fixed repeatedly again until the cast-in-place support beam standard section 1 is built to a required height.
In the whole process, the cast-in-place support beam standard knot 1 is heightened through the self-lifting outer sleeve frame 2, then the self-lifting outer sleeve frame 2 ascends along the heightened cast-in-place support beam standard knot 1, and the cast-in-place support standard beam piece system 5 can be lifted upwards together in the climbing process. The cast-in-place support standard beam piece system 5 forms a whole box beam mold supporting bottom plate, and the box beam can be poured by erecting a box beam mold. In the whole process, the cast-in-place support beam standard knot 1 supports the cast-in-place support standard beam piece system 5.
The specific installation method comprises the following steps:
A. and calculating the specific clear height size of the box girder according to the actual situation of the site and a design drawing, and selecting a proper standard section combination. The standard segments are divided into a bottom segment 7, a middle segment 8 and a top segment 12. The elevations of the 3 segments are the same and the structure is almost the same. Wherein the mid-sole section 7 and the mid-sole section 8 are of the same construction. The standard segments currently used are of two forms, 3m and 2 m. The number of the middle sections 8 except the bottom section 7 and the top section 12 is calculated according to the net height of the box girder. Then all the parts are transported to a construction site, the foundation is processed on the corresponding ground, the foundation is required to reach enough bearing capacity and meet the drainage requirement, the bottom section 7 in the standard section 1 of the cast-in-place support beam is fixed on the ground, then the bottom section 7 is hoisted by a crane, and the middle sections 8 in the plurality of standard sections are overlapped and fixedly stacked; the total height of the cast-in-situ support beam standard knot 1 is about 9m, and the specific height can be freely selected, so that the self-lifting outer sleeve frame 2 is convenient to mount.
B. Assembling the self-lifting outer sleeve frame 2, installing 4 lifting jacks 9 on each self-lifting outer sleeve frame 2, sleeving the self-lifting outer sleeve frame 2 outside the installed cast-in-place support beam standard knot 1 through a crane in a lifting way, sleeving 1 self-lifting outer sleeve frame 2 on each cast-in-place support beam standard knot 1 correspondingly, and fixedly connecting the self-lifting outer sleeve frame 2 with the cast-in-place support beam standard knot 1 through a temporary fixedly connecting device. The self-lifting outer frame 2 is a hollow frame structure, the size of which is larger than that of each standard section, so that the self-lifting outer frame can be sleeved outside the standard section 1 of the cast-in-place support beam during installation.
C. 1 electric hoist track beam 3 and 1 bearing crossbeam 4 are fixedly installed between 2 adjacent horizontal self-lifting outer frame 2 to install electric hoist 6 on electric hoist track beam 3. The above components can be hoisted by a crane in the installation process.
D. A plurality of cast-in-place support standard beam sections 10 are assembled into a plurality of sets of cast-in-place support standard beam systems 5 with long strip structures on the ground, the cast-in-place support standard beam sections are respectively hoisted by a crane and longitudinally placed and fixed at the top of a bearing cross beam 4, and a plurality of sets of cast-in-place support standard beam systems 5 are specifically arranged and are mainly determined according to the width of a box beam. The length of the assembled cast-in-place support standard beam piece system 5 is also determined by the length of the box beam. And the distribution beam 11 is hoisted and fixed on the top of the cast-in-place support standard beam piece system 5.
E. The method comprises the steps that 1 section of a middle section 8 to be installed is lifted upwards through vertical movement of an electric hoist 6, the lifting height is stopped after being higher than the middle section 8 at the topmost end of an installed cast-in-place support beam standard section 1, then the electric hoist 6 is controlled to move horizontally along an electric hoist track beam 3 to enable the middle section 8 to be installed to be located at the topmost end of the fixedly installed cast-in-place support beam standard section 1, and then the lifted middle section 8 to be installed is fixedly connected with the middle section 8 below the same;
F. repeating the step E, and installing another middle section 8 to be installed above the middle section 8 which is fixedly installed at the topmost end of the other end of the same electric hoist track beam 3;
G. the bottom of a lifting jack 9 fixedly connected with the self-lifting outer jacket frame 2 is fixed above the topmost middle section 8 at the moment, and a temporary fixedly connecting device between the self-lifting outer jacket frame 2 and the middle section 8 is loosened, so that the self-lifting outer jacket frame 2 is fixedly connected with the lifting jack 9 because the lifting jack 9 is fixedly connected with the cast-in-place support beam standard section 1 at the moment, and the self-lifting outer jacket frame 2 cannot slide downwards even if the temporary fixedly connecting device between the self-lifting outer jacket frame 2 and the middle section 8 is loosened. Then starting the lifting jack 9, lifting the self-lifting outer jacket frame 2 upwards by the lifting jack 9 to reach a standard lifting height, and stopping;
H. then, the lifted self-lifting outer sleeve frame 2 is fixedly connected with the topmost middle section 8 through a temporary fixing device, and the lifting jack 9 is separated from the topmost middle section 8 and lifted upwards for collection;
J. and E-H is repeated until all the middle sections 8 are completely installed, and then E-H is repeated, and the top section 12 of the standard section is fixed on the middle section 8 at the topmost part, so that the whole cast-in-place support beam system is completely installed. At the moment, the whole cast-in-place support beam system is lifted to the height required by box beam construction. The box girder template can be erected on the distribution girder 11, and the box girder construction is realized.
After the cast-in-place support beam system is installed and the box beam construction is completed, the cast-in-place support beam system is descended and dismantled according to the reverse operation of the mode; when the cast-in-place support beam standard knot 1 is removed to be close to the ground, all parts can be lifted and removed by using a crane.
And G, synchronously lifting the self-lifting outer sleeve frame 2 on each cast-in-place support beam standard joint 1 upwards. Just so can keep the balance of electric block track roof beam 3 and bearing crossbeam 4, finally guarantee cast-in-place support standard beam piece system 5 and distribution beam 11 steady rising, avoid promoting desynchronously, lead to superstructure to take place to incline for cast-in-place support beam standard knot 1 receives oblique pressure, takes place to collapse easily.
The temporary fixedly connecting device comprises a section connecting lug plate 13 arranged on the outer side wall of a standard section and a sleeve frame positioning lug plate 14 arranged on the inner side wall of the self-lifting outer sleeve frame 2, and when the self-lifting outer sleeve frame 2 is fixed on the standard section, the connecting lug plate 13 and the sleeve frame positioning lug plate 14 are connected together through a limiting bolt 15. And in the lifting or descending process of the self-lifting outer sleeve frame 2, the limiting bolt 15 is taken out. The height of the self-elevating jacket frame 2 lifted upwards each time can be 1 middle section 8, and because the installed sections are the middle sections 8 except the top section 12 installed at the last time, the new middle sections 8 can be conveniently installed.
The top and the bottom of the standard segment are respectively provided with a segment flange connecting plate 16, when two adjacent standard segments are connected, the two standard segment flange connecting plates 16 are fixedly connected by using bolts, and when the lifting jack 9 is connected with the standard segment, the bottom of the lifting jack is fixed on the segment flange connecting plate 16 at the top of the standard segment. The quick connection between the segments and the segments to the lifting jack 9 is achieved by means of the flange connection plates 16.
The standard section and the self-lifting outer sleeve frame 2 are frame structures formed by connecting rod pieces which are arranged longitudinally, transversely, vertically and/or obliquely, wherein the bottom section 7 and the middle section 8 are square frame structures formed by connecting rod pieces which are arranged longitudinally, transversely, vertically and obliquely. In the whole cast-in-place support beam standard section 1 structure, except a bottom section 7 and a top section 12, the rest parts are middle sections 8, and the middle sections 8 are mainly used for transmitting vertical loads and bearing a part of wind loads. The top section 12 is a square cone structure formed by connecting rods arranged longitudinally, transversely and obliquely, and can well transmit hoisting load to the middle section 8 part of the hoisting tower frame. The bottom section 7 is mainly responsible for the foundation bearing of the whole hoisting tower, and if the bottom section 7 needs to be buried and can not be recycled, the bottom section 7 is not recycled as a permanent structure.
Wherein the middle upper parts of two corresponding side surfaces of 2 self-lifting outer sleeves 2 which are connected with each other through the electric hoist track beam 3 are hollowed out, and the hollowed-out parts of the middle upper parts of the self-lifting outer sleeves 2 are moving spaces of the electric hoist 6 and the hoisted sections during horizontal movement.
In the step C, a temporary support 17 is fixedly arranged at the center of the top bottom of the self-lifting outer jacket frame 2, and the electric hoist track beam 3 and the bearing cross beam 4 are fixed on the temporary support 17 to play a role of temporary support. The top of the bearing beam 4 is higher than the movable hoist track beam 3, the bearing beam 4 is mainly used for bearing the weight of an upper building, although the electric hoist track beam 3 and the bearing beam 4 are arranged in the same direction and can also bear a certain weight, the electric hoist track beam 3 is relatively small in size and limited in bearing capacity, and the bearing beam 4 is additionally arranged.
In the installation process of the top section 12, firstly, a sand box cushion block 18 is fixedly installed on the top of the top section 12, after the top section 12 is installed, the lifting jack 9 is fixedly connected with the top section 12, the temporary fixing device between the self-lifting outer jacket frame 2 and the middle section 8 is loosened, then the lifting jack 9 is started, the self-lifting outer jacket frame 2 is lowered under the action of the lifting jack 9, the temporary support 17 falls on the sand box cushion block 18, and then the self-lifting outer jacket frame 2 is fixedly connected with the middle section 8 through the hoop member 19. The self-lifting outer sleeve frame 2 is stably dropped on the cast-in-place support beam standard knot 1.
After the temporary supports 17 fall on the sand box cushion blocks 18, the temporary supports 17 are connected with the top sections 12 through the stay cables 22, so that the connection strength is enhanced, and overturning is avoided. Meanwhile, the cross brace 23 is hoisted through the electric hoist 6, the cross brace 23 is fixed on the 2 transversely adjacent cast-in-place support beam standard sections 1 through the hoop component 19, and the adjacent cast-in-place support beam standard sections 1 are connected together through the cross brace 23, so that the stability is improved. The cast-in-place support beam standard joints 1 which are longitudinally arranged are connected with the nearby foundation through longitudinal stabilizing steel wire ropes 24, and the cast-in-place support beam standard joints 1 are also connected through the longitudinal stabilizing steel wire ropes 24. The stability is increased.
2 tops of outer trestle 2 of self-lifting are equipped with 2 horizontal poles 20, are equipped with the fixed hole 21 of wearing of 2 lifting jack 9 on every horizontal pole 20, electric block 6 and lifting jack 9 all control through lift control system 25.
In the step C, when the bearing cross beam 4 is installed, limit stops 26 are fixedly and uniformly arranged on the top of the bearing cross beam at intervals, in the step D, a plurality of cast-in-place support standard beam sections 10 are assembled into a plurality of sets of cast-in-place support standard beam sheet systems 5 on the ground and are fixed on the top of the bearing cross beam 4 along the longitudinal hoisting direction, in the fixing process, the bottoms of the cast-in-place support standard beam sheet systems 5 are directly clamped into the limit stops 26, and the cast-in-place support standard beam sheet systems 5 can be quickly positioned and installed through the limit stops 26. The two sets of the cast-in-place support standard beam piece systems 5 which are adjacent in the transverse direction are fixedly connected through the connecting rod pieces 27 which are arranged in the longitudinal direction, the transverse direction and the oblique direction, so that all the cast-in-place support standard beam piece systems 5 are connected into an integral structure, and then the distribution beams 11 are hoisted and fixed.
Claims (9)
1. A method for installing a cast-in-place support beam system capable of automatically rising or falling is characterized in that: the method comprises the steps that a part of a frame body of a plurality of cast-in-place support beam standard joints (1) is longitudinally and transversely installed on the ground, a self-lifting outer sleeve frame (2) is sleeved on the outer side of the part of the frame body of each cast-in-place support beam standard joint (1), every two adjacent self-lifting outer sleeve frames (2) which are transversely arranged are connected through an electric hoist track beam (3) and a bearing beam (4), a cast-in-place support standard beam piece system (5) is longitudinally fixed on the top of the bearing beam (4), an electric hoist (6) on the electric hoist track beam (3) lifts the standard joint upwards and then moves the standard joint transversely and fixes the standard joint on the top of the cast-in-place support beam standard joint (1), and then the self-lifting outer sleeve frame (2) ascends along the cast-in-place support beam standard joint (1), and the lifting and the standard joint are lifted and fixed repeatedly again until the cast-;
the installation method comprises the following steps:
A. fixing a bottom section (7) in a standard section (1) of a cast-in-place support beam on the ground, and overlapping and fixedly stacking a middle section (8) in a plurality of standard sections on the bottom section (7);
B. a lifting jack (9) is arranged on the self-lifting outer sleeve frame (2), the self-lifting outer sleeve frame (2) is hoisted and sleeved on the outer side of the installed cast-in-place support beam standard knot (1), and the self-lifting outer sleeve frame (2) is fixedly connected with the cast-in-place support beam standard knot (1) through a temporary fixedly connecting device;
C. an electric hoist track beam (3) and a bearing beam (4) are fixedly arranged between 2 self-lifting outer sleeves (2) which are transversely arranged, and an electric hoist (6) is arranged on the electric hoist track beam (3);
D. splicing a plurality of cast-in-place support standard beam sections (10) into a plurality of sets of cast-in-place support standard beam sheet systems (5) on the ground, hoisting and fixing the cast-in-place support standard beam sheet systems on the top of a bearing cross beam (4), and hoisting and fixing a distribution beam (11) on the top of the cast-in-place support standard beam sheet systems (5);
E. the method comprises the steps that a middle section (8) to be installed is lifted upwards through an electric hoist (6), the middle section (8) to be installed moves along an electric hoist track beam (3) to be located above a cast-in-place support beam standard section (1) which is fixedly installed, and then the middle section (8) to be installed is fixedly connected with the middle section (8) below;
F. e, repeating the step E, and installing another middle section (8) to be installed above the middle section (8) which is fixedly installed at the topmost end of the other end of the same electric hoist track beam (3);
G. fixing a lifting jack (9) above the topmost middle section (8), loosening a temporary fixedly connecting device between the self-lifting outer sleeve frame (2) and the middle section (8), starting the lifting jack (9), and lifting the self-lifting outer sleeve frame (2) upwards;
H. the lifted self-lifting outer sleeve frame (2) is fixedly connected with the topmost middle section (8) through a temporary fixedly connecting device, and a lifting jack (9) is separated from the topmost middle section (8) and then lifted upwards;
J. and E-H is repeated until all the middle sections (8) are completely installed, and then E-H is repeated, the top section (12) of the standard section is fixed on the middle section (8) at the topmost part, and the whole cast-in-place support beam system is completely installed.
2. A method of installing a self-raising or lowering cast-in-place carrier beam system according to claim 1, wherein: after the cast-in-place support beam system is installed and the box beam construction is completed, the cast-in-place support beam system is descended and dismantled according to the reverse operation of the mode; and G, synchronously lifting the self-lifting outer sleeve frame (2) on each cast-in-place support beam standard joint (1) upwards.
3. A method of installing a self-raising or lowering cast-in-place carrier beam system according to claim 1, wherein: the temporary fixedly connecting device comprises a segment connecting lug plate (13) arranged on the outer side wall of a standard segment and a sleeve frame positioning lug plate (14) arranged on the inner side wall of a self-lifting outer sleeve frame (2), and when the self-lifting outer sleeve frame (2) is fixed on the standard segment, the connecting lug plate (13) is connected with the sleeve frame positioning lug plate (14) through a limiting bolt (15).
4. A method of installing a self-raising or lowering cast-in-place carrier beam system according to claim 1, wherein: the top and the bottom of the standard segment are respectively provided with a segment flange connecting plate (16), when two adjacent standard segments are connected, the two standard segment flange connecting plates (16) are fixedly connected by using bolts, and when the lifting jack (9) is connected with the standard segment, the bottom of the lifting jack is fixed on the segment flange connecting plate (16) at the top of the standard segment.
5. A method of installing a self-raising or lowering cast-in-place carrier beam system according to claim 1, wherein: the standard segment and the self-lifting outer sleeve frame (2) are frame structures formed by connecting rod pieces which are arranged longitudinally, transversely, vertically and/or obliquely, wherein 2 self-lifting outer sleeve frames (2) which are connected with each other through an electric hoist track beam (3) are hollow-out-shaped in two corresponding side surfaces, and the top segment (12) is of a square cone structure.
6. A method of installing a self-raising or lowering cast-in-place carrier beam system according to claim 1, wherein: in the step C, a temporary support (17) is fixedly arranged at the center of the top bottom of the self-lifting outer jacket frame (2), the electric hoist track beam (3) and the bearing cross beam (4) are fixed on the temporary support (17), the top of the bearing cross beam (4) is higher than the electric hoist track beam (3), in the installation process of the top section (12), firstly, a sand box cushion block (18) is fixedly installed at the top of the top section (12), after the top section (12) is installed, the self-lifting outer jacket frame (2) is lowered by using a lifting jack (9), so that the temporary support (17) falls on the sand box cushion block (18), and then the self-lifting outer jacket frame (2) is fixedly connected with the middle section (8) through a hoop member (19).
7. A method of installing a self-raising or lowering cast-in-place carrier beam system according to claim 6, wherein: after the temporary support (17) falls on the sand box cushion block (18), the temporary support (17) is connected with the top section (12) through a stay cable (22), meanwhile, a cross brace (23) is lifted through an electric hoist (6), the cross brace (23) is fixed on 2 transversely adjacent cast-in-place support beam standard sections (1) through a hoop component (19), and the longitudinally arranged cast-in-place support beam standard sections (1) are connected with the nearby foundation or the cast-in-place support beam standard sections (1) through longitudinally stable steel wire ropes (24).
8. A method of installing a self-raising or lowering cast-in-place carrier beam system according to claim 1, wherein: from outer set frame (2) top of lifting be equipped with 2 horizontal poles (20), be equipped with fixed hole (21) of wearing of 2 lifting jack (9) on every horizontal pole (20), electric block (6) and lifting jack (9) are all controlled through lift control system (25).
9. A method of installing a self-raising or lowering cast-in-place carrier beam system according to claim 1, wherein: in the step C, when the bearing beam (4) is installed, limit stops (26) are fixedly and uniformly arranged on the top of the bearing beam at intervals, in the step D, a plurality of cast-in-place support standard beam sections (10) are spliced into a plurality of sets of cast-in-place support standard beam systems (5) on the ground and are fixed on the top of the bearing beam (4) in a longitudinal hoisting mode, in the fixing process, the bottoms of the cast-in-place support standard beam systems (5) are clamped into the limit stops (26), two sets of transversely adjacent cast-in-place support standard beam systems (5) are fixedly connected through connecting rod pieces (27) arranged longitudinally, transversely and obliquely, and then the distribution beam (11) is fixedly hoisted.
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| CN101225706A (en) * | 2007-01-19 | 2008-07-23 | 西北工业大学 | Adhered self-lifting highrise operation platform |
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