CN110886228A - Cable tower box type steel anchor beam and construction method - Google Patents
Cable tower box type steel anchor beam and construction method Download PDFInfo
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- CN110886228A CN110886228A CN201911227339.4A CN201911227339A CN110886228A CN 110886228 A CN110886228 A CN 110886228A CN 201911227339 A CN201911227339 A CN 201911227339A CN 110886228 A CN110886228 A CN 110886228A
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- steel anchor
- bracket
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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
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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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
- E01D2101/30—Metal
Abstract
The invention provides a cable tower box type steel anchor beam and a construction method, which mainly comprises the following construction steps: (1) construction preparation; (2) checking and accepting the pre-splicing precision of the steel anchor beam; (3) integrally pre-splicing the steel anchor beam; (4) transporting the steel anchor beam; (5) a lifting appliance is installed on the steel anchor beam; (6) installing a first section of steel anchor beam; (7) the steel anchor beam tower is connected with a high part; (8) and controlling the installation precision of the steel anchor beam and the steel bracket. The invention adopts the cable tower box type steel anchor beam and the construction method, has high construction efficiency, high assembly precision and good technical guarantee, greatly improves the assembly construction efficiency of the steel anchor beam and the steel bracket unit by the design and the application of the assembly jig, has convenient and reliable assembly precision regulation and control and remarkable quality control effect, and brings good construction and economic benefits for projects and enterprises.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to a cable tower box-shaped steel anchor beam and a construction method thereof, which are suitable for installation and construction of the cable tower box-shaped steel anchor beam.
Background
Generally, a combined structure of a steel anchor beam and a steel corbel unit is a stay cable anchoring device in a main tower of a cable-stayed bridge, and the installation and construction precision of the steel anchor beam and the steel corbel unit directly influences the installation and construction precision guarantee of a stay cable and the final control of a bridge cable force, so that the key of the main tower engineering construction lies in the accurate control of the installation and construction of the steel anchor beam and the steel corbel unit. In order to eliminate the deformation possibly generated in the transportation process, the parts are transported to a construction site, and then are subjected to secondary pre-assembly adjustment, and are installed after being accepted.
At present, the field installation of the steel anchor beam is influenced by factors such as construction site arrangement, hoisting capacity and the like, and the following two construction schemes are mainly adopted at present: firstly, the steel anchor beam and the two steel corbels are hoisted for three times, and are assembled, finely adjusted and positioned on the tower, and the scheme has the defects of low installation speed, complex working procedures, high operation difficulty, high risk and difficult control of installation precision; secondly, the steel anchor beam and the steel corbel are firstly assembled on the ground to form a whole, and then the whole is hoisted to the tower to be precisely adjusted and positioned.
Therefore, how to realize the assembly precision of the steel anchor beam and the steel bracket unit is of great importance, is a key technology of field construction, and is a serious difficulty of main tower construction.
Disclosure of Invention
The invention aims to provide a cable tower box-type steel anchor beam and a construction method, the cable tower box-type steel anchor beam and the construction method are adopted, the construction efficiency is high, the assembly precision is high, the technical guarantee is good, the assembly jig frame is designed and applied, the assembly construction efficiency of the steel anchor beam and the steel bracket unit is greatly improved, the assembly precision is convenient and reliable to regulate and control, the quality control effect is obvious, and good construction and economic benefits are brought to projects and enterprises.
In order to achieve the purpose, the invention provides 1 a construction method of a cable tower box-type steel anchor beam, which is characterized by comprising the following steps:
1): construction preparation: before construction, collecting related design drawings, carrying out technical background on key procedures, and processing and manufacturing related parts;
2) and (3) checking and accepting the pre-splicing precision of the steel anchor beam: the hoisting scheme of the steel anchor beam (19) is simulated by Revit and Dynamo, the processing precision and the matching condition of the steel anchor beam (19) are checked, and the steel anchor beam is transported to a construction site after being qualified;
3) integrally pre-splicing steel anchor beams: before pre-splicing, assembling and mounting a field assembly jig frame (69) with a guide fixing device and an assembly guide clamping frame (66), arranging the assembly guide clamping frame (66) outside the field assembly jig frame (69) with the guide fixing device, pre-splicing a single-section steel anchor beam (19), firstly arranging the field assembly jig frame (69) with the guide fixing device in parallel on the field, then utilizing hanging balls (49) on two sides of the assembly guide clamping frame (66) to perform elevation positioning on a split heads (51), a steel anchor beam (19) and a bracket wall plate (9) of the field assembly jig frame (69) with the guide fixing device and the split heads (19), after the top elevation measurement of the split heads (51) is accurately leveled, utilizing a lifting device (67) of an assembly adjusting device (70) on the assembly guide clamping frame (66) to lift the steel anchor beam (19), lifting the steel anchor beam to a box-shaped anchor beam laying groove plate (47) of the split heads (51), and fixing a pulling plate (62) and a box-shaped anchor beam fixing pulling rod (61) by utilizing the box-shaped pulling rod to fix the pulling plate and the box-shaped anchor beam fixing pulling rod (61 The method comprises the steps that a bracket wallboard (9) on two sides is respectively lifted and assembled by a lifting device (67) on a shaped anchor beam placing groove plate (47), the bracket wallboard (9) is placed on a bracket wallboard placing groove plate (57) on the side of a field assembling jig (69) with a guide fixing device, vertical elevation adjustment is carried out through a bracket adjusting jack (56), and a steel bracket (18) and a steel anchor beam (19) are fixed by a box-shaped anchor beam fixing pull rod (61) after the bracket wallboard (9) on one side is in place;
rechecking the size and the elevation of the anchor point of the wall plate, splicing the second section of steel anchor beam (19) by the folding lattice to be checked, adjusting the bracket wall plate (9) in the horizontal direction by a wall plate adjusting jack (60), and fixing a pull rod (63) by temporarily fixing the upper bracket wall plate and the lower bracket wall plate (9);
4) and (3) transporting the steel anchor beam: the steel corbels (18) and the steel anchor beams (19) are integrally assembled in a factory, the steel anchor beams (19) on the main span side and the steel corbels (18) are temporarily solidified by high-strength bolts, the downward direction of nut ends of the high-strength bolts is ensured, matching components are temporarily reinforced by an assembly tool, and the steel corbels can leave the factory after the integral structure is formed;
5) the steel anchor beam installs the hoist: the steel corbel (18) and the steel anchor beam (19) are integrally hoisted by utilizing the standardized hoisting tool (45), when the steel anchor beam (19) and the steel corbel (18) are hoisted, four lower lifting lugs (5) of the standardized hoisting tool are welded below a main beam (1) of the standardized hoisting tool, four upper lifting lugs (4) of the standardized hoisting tool are arranged above the lower lifting lugs and are used as hoisting points, the steel anchor beam (19) is hoisted by adopting four-point hoisting of the steel anchor beam (19), and the steel anchor beam (19) is connected with the steel anchor beam (19) through a hoisting steel wire rope pull ring (8) and a suspension steel wire rope (71);
6) installing a first section of steel anchor beam: before a first section of steel anchor beam (19) is installed, a bidirectional guide limiting support (46) is installed, a steel plate embedded part (30) and an anchor rod (33) of the embedded part are embedded in first section concrete of a transverse bridge direction of the inner wall of a tower column, a bottom cross beam (32) of the bidirectional guide limiting support is welded on a bottom fixing steel plate (34) of the limiting support to serve as a bottom main beam, two trusses serving as the bidirectional guide limiting support (46) are arranged on the bottom main beam in the bridge direction, after the concrete of the tower column is poured, the bottom cross beam (32) of the bidirectional guide limiting support is welded on the bottom fixing steel plate (34) of the limiting support, and a limiting block (24), a transverse adjusting jack (25), a longitudinal adjusting support beam (37), a longitudinal adjusting jack (38) and a reaction frame (42) are arranged on the bidirectional guide limiting support (46) and used for accurately positioning and adjusting the steel anchor;
7) the steel anchor beam tower is connected with a high part: after the concrete of the upper section of tower column is poured, the top surface of the steel anchor beam (19) is cleaned, the steel anchor beam (19) of the standard section is prepared to be hoisted, four points are adopted to hoist the steel anchor beam (19), and a stiffening core framework (13) arranged on a poured segment is used for assisting in accurate installation, an upper lifting lug (4) of the shaped lifting appliance is connected with a lifting steel wire rope (71), the lower part of a lower lifting lug (5) of the shaped lifting appliance is connected with one end of a suspension steel wire rope (7), the other end of the suspension steel wire rope (7) is connected with a lifting steel wire rope pull ring (8), after a steel anchor beam (19) is lifted to a proper position, the positioning steel cable (21) is connected with the hook (11), the chain pull ring (22) is connected with the chain block (12), the position of the suspended steel anchor beam (19) can be accurately controlled by pulling the manual pull rod (10), after the upper and lower steel anchor beams (19) are aligned, butting and temporarily fixing a construction site temporary matching piece (14) arranged at the top of the installed steel anchor beam (19);
8) controlling the installation precision of the steel anchor beam and the steel bracket: the installation accuracy control of the steel anchor beam (19) and the steel corbel (18) is characterized in that the steel anchor beam (19) and the steel corbel are subjected to temperature and wind correction and accurate positioning first sections, when the steel anchor beam (19) is installed at a certain height, a steel gasket is adopted for correcting the deviation and is arranged at the position where the steel anchor beam (19) is in butt joint with the steel corbel (18) in groups, and the deviation correcting gasket is arranged in one layer in each batch.
According to another aspect of the present invention, there is provided a cable tower box section steel anchor obtained by the method of constructing the same.
The invention has the following outstanding advantages and remarkable effects:
the first section of steel anchor beam related by the invention is installed by adopting a simple and stereotyped lifting appliance, a limiting and guiding device and an elevation adjusting bolt in parallel, is convenient and fast to operate, and lays a good foundation for improving the installation precision of the whole steel anchor beam. .
2 the steel anchor beam adopts the transverse adjusting jack, the longitudinal adjusting jack and the height adjusting jack to carry out high-precision control and deviation correction, thereby reducing the construction difficulty of firstly casting the bracket and then installing the anchor beam and simultaneously improving the installation precision of the anchor beam.
The field assembling jig frame with the guide fixing device is novel in structural design, convenient to assemble and disassemble, capable of achieving cyclic utilization, convenient to operate and convenient to accurately position, assemble and adjust.
4 the field assembly jig frame with the guide fixing device can realize vertical rolling trial assembly of the steel anchor beam and strictly control the geometric dimension and the manufacturing precision of the steel anchor beam.
Drawings
FIG. 1 is a construction drawing of a cable tower box type steel anchor beam mounting structure;
FIG. 2 is a schematic plan view of a modular spreader configuration;
FIG. 3 is a schematic elevation view of a modular spreader configuration;
FIG. 4 is a parallel configuration view of a modular spreader;
figure 5 is a diagram of the upper shackle configuration of a profiled spreader;
figure 6 is a lower lug configuration diagram of a profiled spreader;
FIG. 7 is a cross-sectional view of a bi-directional guide limit bracket;
FIG. 8 is a two-way guide limit bracket in elevation configuration;
FIG. 9 is a plan view of a bi-directional guide spacing bracket;
FIG. 10 is a cross-sectional view of the bottom mounting plate configuration of the spacing bracket;
FIG. 11 is a diagram of an embedment and the bolt configuration of the embedment;
FIG. 12 is a bottom mounting plate and embedment member elevation configuration view of the spacing bracket;
FIG. 13 is an elevational view of the cross-over positioning apparatus;
FIG. 14 is a plan view of the positioning device;
FIG. 15 is an elevational view of the forward positioning device;
FIG. 16 is a structural view of a cable tower box type steel anchor beam pre-assembled jig;
FIG. 17 is a schematic structural view of a field assembly jig with a guiding and fixing device;
FIG. 18 is a schematic structural view of the splicing guide holder;
fig. 19 is a plan view of the box-type anchor beam resting groove plate.
In the figure: 1-main beam of shaped sling, 2-diagonal brace of shaped sling, 3-parallel connection of shaped sling, 4-upper lifting lug of shaped sling, 5-lower lifting lug of shaped sling, 6-cutting limb, 7-suspension steel wire rope, 8-lifting steel wire rope pull ring, 9-bracket wall plate, 10-manual pull rod, 11-hook, 12-chain block, 13-stiff skeleton, 14-construction site temporary matching piece, 15-anchor box, 16-anchor box fixing bolt, 17-poured segment, 18-steel bracket, 19-steel anchor beam, 20-anchor backing plate, 21-positioning steel cable, 22-chain pull ring, 23-chain, 24-limiting block, 25-transverse adjusting jack, 26-diagonal brace of limiting bracket, 27-vertical rods of a limiting support, 28-scissor supports of the limiting support, 29-fixing bolts, 30-embedded parts, 31-bolts of the embedded parts, 32-bottom cross beams of a bidirectional guiding limiting support, 33-anchor rods of the embedded parts, 34-bottom fixing steel plates of the limiting support, 35-cross beams of the limiting support, 36-top cross beams of the limiting support, 37-longitudinal adjusting support beams, 38-longitudinal adjusting jacks, 39-height adjusting jacks, 40-top parallel connection of the limiting support, 41-bolt holes of the bottom fixing steel plates, 42-reaction frames, 43-steel anchor beam steel plates, 44-hoisting steel wire rope pull ring fixing pieces, 45-shaped lifting appliances, 46-bidirectional guiding limiting support, 47-box type anchor beam laying groove plates, and the like, 48-anchor box fixing bolts, 49-hanging balls, 50-wall plate placing grooves, 51-split heads, 52-bottom bracket cross braces, 53-split head bracket, 54-transverse connecting beams, 55-bottom bracket diagonal braces, 56-bracket adjusting jacks, 57-bracket wall plate placing groove plates, 58-welding nails and 59-hanging wires, 60-a wallboard adjusting jack, 61-a box-type anchor beam fixing pull rod, 62-a box-type anchor beam pull rod fixing pull plate, 63-a temporary fixing counter pull rod, 64-a hanging rod, 65-a suspension steel wire, 66-an assembling guide clamping frame, 67-a lifting device, 68-a fixing pull plate hole, 69-a field assembling jig frame with a guide fixing device, 70-an assembling adjusting device and 71-a hoisting steel wire rope.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
The construction technical requirements of steel pipe welding and cutting, reinforcement cage binding, concrete pouring and the like in the embodiment of the invention are not repeated, the embodiment of the invention is mainly clarified, the invention is further described in detail by the embodiment with reference to the attached drawings, and the description is not limited to the following embodiment.
A cable tower box type steel anchor beam and a construction method are characterized by comprising the following steps:
1): construction preparation: before construction, collecting related design drawings, carrying out technical intersection on key processes, and processing and manufacturing related components such as a corbel wallboard (9), a steel corbel (18), a steel anchor beam (19), a bidirectional guide limiting bracket (46), a stereotyped lifting appliance (45), an assembly guide clamping frame (66), a field assembly jig frame (69) with a guide fixing device and the like;
2) and (3) checking and accepting the pre-splicing precision of the steel anchor beam: revit and Dynamo are utilized to simulate a lifting scheme of the steel anchor beam (19), so that the steel anchor beam (19) can be prefabricated in industrialized production and accurately lifted on site. Checking the machining precision and the matching condition of the steel anchor beam (19), and after the steel anchor beam (19) is qualified, conveying the steel anchor beam to a construction site, wherein parts of the steel anchor beam (19) are required to be organized and relevant personnel to be checked and accepted;
3) integrally pre-splicing steel anchor beams: before pre-splicing, assembling and mounting a field assembly jig frame (69) with a guide fixing device and an assembly guide clamping frame (66), arranging the assembly guide clamping frame (66) at the outer side of the field assembly jig frame (69) with the guide fixing device, pre-splicing a single-section steel anchor beam (19), firstly arranging 2 field assembly jig frames (69) with the guide fixing device in parallel on the field, then positioning elevations of a stool (51), a steel anchor beam (19) and a bracket wallboard (9) on the field assembly jig frame (69) with the guide fixing device by utilizing hanging balls (49) at two sides of the assembly guide clamping frame (66), hoisting the steel anchor beam (19) by utilizing a hoisting device (67) of an assembly adjusting device (70) on the assembly guide clamping frame (66) after the top elevation of the stool (51) is measured to be leveled accurately, hoisting the steel anchor beam (19) to a box-shaped anchor beam laying groove plate (47) of the stool (51), and the steel anchor beam (19) is simply fixed on the box anchor beam laying groove plate (47) by using a box anchor beam pull rod fixing pull plate (62) and a box anchor beam fixing pull rod (61), the bracket wall plates (9) on two sides are respectively lifted and assembled by a lifting device (67), the bracket wall plates (9) are laid in the wall plate laying groove (50) of the bracket wall plate laying groove plate (57) on the side of the field assembly jig frame (69) with the guide fixing device, vertical elevation adjustment is carried out by a bracket adjusting jack (56), and the steel bracket (18) and the steel anchor beam (19) are fixed by using the box anchor beam fixing pull rod (61) after the bracket wall plate (9) on one side is in place.
Rechecking the size, the height and the like of the anchor points of the wall plates, continuously pre-splicing the wall plates to be checked, splicing the second section of steel anchor beam (19), adjusting the horizontal direction of the bracket wall plates (9) through a wall plate adjusting jack (60), and fixing a pull rod (63) between the two bracket wall plates (9) by temporary fixation;
4) and (3) transporting the steel anchor beam: the steel corbels (18) and the steel anchor beams (19) are integrally assembled in a factory, the high-strength bolts connected with the steel corbels (18) at the side span ends are used for applying pretightening force in the factory to form a consolidation state, the steel anchor beams (19) at the main span side are temporarily consolidated with the steel corbels (18) through the high-strength bolts to ensure that the nut ends of the high-strength bolts are downward, and the assembly tool is used for temporarily reinforcing a matching component to form an integral structure and then can leave the factory;
5) the steel anchor beam installs the hoist: and the steel corbel (18) and the steel anchor beam (19) are integrally hoisted by utilizing the shaped hoisting tool (45) for eliminating the internal force of the wallboard so as to avoid the deformation of the steel anchor beam in the hoisting process. When a steel anchor beam (19) and a steel corbel (18) are hoisted, a rectangular truss type sling 4 point made of profile steel is adopted for hoisting, four lower lifting lugs (5) of the shaped sling are welded below a main beam (1) of the shaped sling, four upper lifting lugs (4) of the shaped sling are arranged above the rectangular truss type sling to serve as hoisting points, the steel anchor beam (19) is hoisted by adopting four points, and the steel anchor beam (19) is connected with the steel anchor beam (19) through a hoisting steel wire rope pull ring (8) and a suspension steel wire rope (71);
6) installing a first section of steel anchor beam: before a first section of steel anchor beam (19) is installed, a bidirectional guide limiting support (46) is installed firstly, four 50cm multiplied by 55cm steel plate embedded parts (30) and anchor rods (33) of the embedded parts are embedded in first section concrete in a transverse bridge direction of the inner wall of a tower column, a bottom cross beam (32) of the bidirectional guide limiting support of HN350 multiplied by 175 steel is welded on a bottom fixed steel plate (34) of the limiting support of the bidirectional guide limiting support (46) to serve as a bottom main beam, two trusses serving as the bidirectional guide limiting support (46) are arranged on the bottom main beam in the bridge direction, a top cross beam (36) of the limiting support, an inclined strut (26) of the limiting support and a vertical rod (27) of the limiting support are made of [25a double-spliced I-steel ], and double-spliced [25a channel steel is used as a shear strut (28) of. After the concrete pouring of the tower column is finished, welding a bottom cross beam (32) of the bidirectional guide limiting support on a bottom fixing steel plate (34) of the limiting support to serve as a first section of steel anchor beam (19) to support a main beam, arranging a bidirectional guide limiting support (46) above the main beam, and arranging a limiting block (24), a transverse adjusting jack (25), a longitudinal adjusting support beam (37), a longitudinal adjusting jack (38) and a reaction frame (42) on the bidirectional guide limiting support (46) to accurately position and adjust the steel anchor beam (19);
7) the steel anchor beam tower is connected with a high part: after the concrete of the upper section of tower column is poured, the top surface of the steel anchor beam (19) is cleaned, the steel anchor beam (19) of the standard section is prepared to be hoisted, four points are adopted to hoist the steel anchor beam (19), and the stiffening core framework (13) is used for assisting in accurate installation, an upper lifting lug (4) of the shaped lifting appliance is connected with a lifting steel wire rope (71), the lower part of a lower lifting lug (5) of the shaped lifting appliance is connected with one end of a suspension steel wire rope (7), the other end of the suspension steel wire rope (7) is connected with a lifting steel wire rope pull ring (8), after a steel anchor beam (19) is lifted to a proper position, the positioning steel cable (21) is connected with the hook (11), the chain pull ring (22) is connected with the chain block (12), the position of the suspended steel anchor beam (19) can be accurately controlled by pulling the manual pull rod (10), after the upper and lower steel anchor beams (19) are aligned, butting and temporarily fixing a construction site temporary matching piece (14) arranged at the top of the installed steel anchor beam (19);
8) controlling the installation precision of the steel anchor beam and the steel bracket: the control of the installation accuracy of the steel anchor beam (19) and the steel corbel (18) is to adopt a steel gasket for correcting the deviation when the steel anchor beam (19) is installed at a certain height except for temperature and wind correction and accurate positioning of a first section, the steel anchor beam is arranged at the position where the steel anchor beam (19) is in grouping butt joint with the steel corbel (18), and the deviation correcting gasket is arranged at one layer in each batch.
As shown in fig. 1 to 19, the present invention mainly includes: the main beam (1) of the standardized lifting appliance, a lifting steel wire rope (7), a hand-pulled hoist (12), a stiff framework (13), a construction site temporary matching part (14), a positioning steel cable (21), a chain pull ring (22), a limiting block (24), a transverse adjusting jack (25), an embedded part (30), an anchor rod (33) of the embedded part, a longitudinal adjusting support beam (37), a longitudinal adjusting jack (38), a height adjusting jack (39), a reaction frame (42), the standardized lifting appliance (45), a bidirectional guiding limiting support (46), a box-type anchor beam laying groove plate (47), an anchor box fixing bolt (48), a hanging ball (49), a wall plate laying groove (50), a split heads (51), a bottom support transverse support (52), a split heads bottom support (53), a bottom support inclined support (55), a bracket adjusting jack (56), a bracket wall plate laying groove plate (57), The device comprises a hanging line (59), a wallboard adjusting jack (60), a box-shaped anchor beam fixing pull rod (61), a box-shaped anchor beam pull rod fixing pull plate (62), a temporary fixing counter pull rod (63), an assembling guide clamping frame (66), a hoisting device (67), a field assembling jig frame (69) with a guide fixing device and an assembling adjusting device (70).
The pre-assembly of the box-type steel anchor beam (19) adopts a field assembly jig frame (69) with a guide fixing device, the steel anchor beam (19) is hoisted by adopting a shaped lifting appliance (45), the steel anchor beam (19) of the first section is accurately installed by adopting a bidirectional guide limiting support (46), the steel anchor beam (19) of the standard section is accurately installed by adopting a stiffening core framework (13) in an auxiliary manner, and the high-precision installation control and the deviation correction of the steel anchor beam (19) adopt a transverse adjusting jack (25), a longitudinal adjusting jack (38) and a height adjusting jack (39).
The field assembly jig frame (69) with the guide fixing device is used for pre-assembling the box-type steel anchor beam (19), a split heads (51) is arranged at the upper part of a split heads bottom support (53) in the shape of a coupling steel anchor beam, a box-type anchor beam laying groove plate (47) is arranged above the split heads (51), a box-type anchor beam fixing pull rod (61) is arranged at the upper part of the split heads, and the split heads are fixed by a box-type anchor beam pull rod fixing pull plate (62); a bracket wallboard placing groove plate (57) is arranged near the bottom of the support (53) at the bottom of the split heads, and a bracket adjusting jack (56) and a wallboard placing groove (50) are arranged on the bracket wallboard placing groove plate; the assembling guide clamping frame (66) is arranged on the outer side of an assembling jig frame (69) in a field with a guide fixing device, 4 assembling adjusting devices (70) are symmetrically arranged at the upper part of the assembling guide clamping frame, hanging rods (64) are arranged at the end parts of two sides of the assembling guide clamping frame, a wallboard adjusting jack (60) is arranged in the middle of each hanging rod, and a temporary fixing butt-pull rod (63) is used for fixing two upper and lower corbel wallboards (9) after being assembled.
The steel anchor beam (19) of the first section is accurately installed by adopting a bidirectional guide limiting support (46), a suspension steel wire rope (7) is connected with a hoisting steel wire rope pull ring (8), and the hoisting steel wire rope pull ring (8) is fixed on the top of the steel anchor beam (19) of the standard section through a hoisting steel wire rope pull ring fixing piece (44); the steel anchor beam (19) of the standard section is accurately installed by the aid of the stiffening core framework (13), positioning steel pull cables (21) are arranged on two sides of the top of the installed steel anchor beam (19) and are connected with the chain block (12), and the chain block (12) is connected with a chain pull ring (22) at the bottom of the suspended steel anchor beam (19); the steel anchor beam (19) adopts a transverse adjusting jack (25), a longitudinal adjusting jack (38) and a height adjusting jack (39) to carry out high-precision control and deviation correction.
The shaped lifting appliance (45) mainly comprises a main beam (1) of the shaped lifting appliance, an inclined strut (2) of the shaped lifting appliance and a parallel connection (3) of the shaped lifting appliance; the first section of concrete is internally provided with rows of embedded parts (30) and anchor rods (33) of the embedded parts, the embedded parts (30) are provided with bolts (31) of the embedded parts, and the bolts (31) of the embedded parts are connected with the anchor rods (33) of the embedded parts.
As shown in figure 1, the chain (23) penetrates through the chain block (12) to be connected with the manual pull rod (10), the hook (11) is connected with the positioning steel cable (21), and the chain block (12) is connected with the chain pull ring (22) through the chain (23). The construction site temporary matching piece (14) is arranged at the top of the installed steel anchor beam (19), and the stiff skeleton (13) is arranged at the poured segment (17).
As shown in fig. 2 to 6, the main beam (1) of the standardized lifting appliance is made of i-steel, the top of the main beam (1) is welded at an angle of 45 degrees at the periphery with the upper lifting lugs (4) of 4 standardized lifting appliances, and is welded at an angle of 18 degrees with the axis of the main beam (1) of the standardized lifting appliance, the bottom of the main beam (1) of the standardized lifting appliance is provided with the lower lifting lugs (5) of 4 standardized lifting appliances, 3 parallel connections (3) of the standardized lifting appliances are arranged between 2 main beams (1) of the standardized lifting appliances, 2 parallel connections (3) of the standardized lifting appliances are provided with 2 inclined struts (2) of the standardized lifting appliances, and the limb cutting (6) of the parallel connections (3) of the standardized lifting appliances is welded with the main beam (1) of the standardized lifting appliances.
As shown in fig. 7 to 9, the bidirectional guide limiting support (46) is composed of a diagonal brace (26) of the limiting support, a vertical bar (27) of the limiting support, a scissor brace (28) of the limiting support, a bottom cross beam (32) of the bidirectional guide limiting support, a diagonal brace (35) of the limiting support, a top cross beam (36) of the limiting support and a top parallel connection (40) of the limiting support, the top cross beam (36) of the limiting support is arranged at the top of the vertical bar (27) of the limiting support, the bottom cross beam (32) of the bidirectional guide limiting support is arranged at the bottom of the vertical bar, the diagonal brace (35) of the limiting support is arranged between the middle parts of the vertical bars (27) of the two limiting supports, and the diagonal brace (26) of the limiting support is respectively arranged between the diagonal brace (35) of the limiting support and the top cross beam (36) of.
As shown in fig. 7 and fig. 13-14, a longitudinal adjusting supporting beam (37), a limiting block (24), a transverse adjusting jack (25) and a reaction frame (42) are arranged above a top cross beam (36) of the limiting support, one end of the transverse adjusting jack (25) is propped against one side of a steel anchor beam steel plate (43) on the side of the steel anchor beam (19), the other end of the transverse adjusting jack is propped against the reaction frame (42), and the limiting block (24) is arranged on the other side of the steel anchor beam steel plate (43).
As shown in fig. 8 and fig. 10 to 12, the bottom fixing steel plate (34) of the limiting bracket is welded with the bottom cross beam (32) of the bidirectional guide limiting bracket, bolt holes (41) of the bottom fixing steel plate are arranged around the bottom fixing steel plate, and bolts (31) of the embedded part penetrate through the bolt holes (41) of the bottom fixing steel plate and are fastened by fixing bolts (29).
As shown in fig. 8 and 14-15, the top parallel connection (40) of the limiting support is arranged between the tops of the vertical rods (27) of the 2 limiting supports, the height adjusting jacks (39) are arranged above the two ends of the top of the limiting support, and the cross braces (28) of the limiting support are arranged between the height adjusting jacks and the vertical rods (27) of the 2 limiting supports. The longitudinal adjusting support beam (37) is arranged above a top cross beam (36) and a height adjusting jack (39) of the limiting support, the two ends of the top of the longitudinal adjusting support beam are provided with a limiting block (24), a longitudinal adjusting jack (38) and a reaction frame (42), one end of the longitudinal adjusting jack (38) is propped against one side of a steel anchor beam steel plate (43), and the other end of the longitudinal adjusting jack is propped against the reaction frame (42).
As shown in fig. 16 and 17, the field assembly jig (69) with the guide fixing device is composed of a box-shaped anchor beam holding groove plate (47), a wall plate holding groove (50), a coupling steel anchor beam (19) shaped split heads bottom support (53), a box-shaped anchor beam pull rod fixing pull plate (62), a bracket wall plate holding groove plate (57) and a temporary fixing counter pull rod (63), wherein the box-shaped anchor beam holding groove plate (47) is used for temporarily supporting and fixing the steel anchor beam (19), a fixing pull rod hole (68) is reserved at the top of the box-shaped anchor beam holding groove plate (47), and the wall plate holding groove (50) is used for temporarily supporting and clamping the bracket wall plate (9). The lower part of the split heads bottom bracket (53) is provided with a bottom bracket cross brace (52), and a transverse connecting beam (54) and a bottom bracket inclined brace (55) are arranged between the two split heads bottom bracket (53). The bracket adjusting jack (56) is used for adjusting the elevation of the steel bracket (18) in the vertical direction.
As shown in fig. 18 and 19, the suspension wires (59) are suspended from the suspension rods (64) with suspension balls (49) below them for precise control of the elevation of the steel anchor beam (19) and the corbel wall (9). The assembling and adjusting device (70) is composed of a suspension steel wire (65) and a hoisting device (67), wherein the suspension steel wire (65) is connected with the steel anchor beam (19) and the corbel wall plate (9). The wallboard adjusting jack (60) is used for adjusting the elevation of the bracket wallboard (9) in the horizontal direction.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (10)
1. A construction method of a cable tower box type steel anchor beam is characterized by comprising the following steps:
1): construction preparation: before construction, collecting related design drawings, carrying out technical background on key procedures, and processing and manufacturing related parts;
2) and (3) checking and accepting the pre-splicing precision of the steel anchor beam: the hoisting scheme of the steel anchor beam (19) is simulated by Revit and Dynamo, the processing precision and the matching condition of the steel anchor beam (19) are checked, and the steel anchor beam is transported to a construction site after being qualified;
3) integrally pre-splicing steel anchor beams: before pre-splicing, assembling and mounting a field assembly jig frame (69) with a guide fixing device and an assembly guide clamping frame (66), arranging the assembly guide clamping frame (66) outside the field assembly jig frame (69) with the guide fixing device, pre-splicing a single-section steel anchor beam (19), firstly arranging the field assembly jig frame (69) with the guide fixing device in parallel on the field, then utilizing hanging balls (49) on two sides of the assembly guide clamping frame (66) to perform elevation positioning on a split heads (51), a steel anchor beam (19) and a bracket wall plate (9) of the field assembly jig frame (69) with the guide fixing device and the split heads (19), after the top elevation measurement of the split heads (51) is accurately leveled, utilizing a lifting device (67) of an assembly adjusting device (70) on the assembly guide clamping frame (66) to lift the steel anchor beam (19), lifting the steel anchor beam to a box-shaped anchor beam laying groove plate (47) of the split heads (51), and fixing a pulling plate (62) and a box-shaped anchor beam fixing pulling rod (61) by utilizing the box-shaped pulling rod to fix the pulling plate and the box-shaped anchor beam fixing pulling rod (61 The method comprises the steps that a bracket wallboard (9) on two sides is respectively lifted and assembled by a lifting device (67) on a shaped anchor beam placing groove plate (47), the bracket wallboard (9) is placed on a bracket wallboard placing groove plate (57) on the side of a field assembling jig (69) with a guide fixing device, vertical elevation adjustment is carried out through a bracket adjusting jack (56), and a steel bracket (18) and a steel anchor beam (19) are fixed by a box-shaped anchor beam fixing pull rod (61) after the bracket wallboard (9) on one side is in place;
rechecking the size and the elevation of the anchor point of the wall plate, splicing the second section of steel anchor beam (19) by the folding lattice to be checked, adjusting the bracket wall plate (9) in the horizontal direction by a wall plate adjusting jack (60), and fixing a pull rod (63) by temporarily fixing the upper bracket wall plate and the lower bracket wall plate (9);
4) and (3) transporting the steel anchor beam: the steel corbels (18) and the steel anchor beams (19) are integrally assembled in a factory, the steel anchor beams (19) on the main span side and the steel corbels (18) are temporarily solidified by high-strength bolts, the downward direction of nut ends of the high-strength bolts is ensured, matching components are temporarily reinforced by an assembly tool, and the steel corbels can leave the factory after the integral structure is formed;
5) the steel anchor beam installs the hoist: the steel corbel (18) and the steel anchor beam (19) are integrally hoisted by utilizing the standardized hoisting tool (45), when the steel anchor beam (19) and the steel corbel (18) are hoisted, four lower lifting lugs (5) of the standardized hoisting tool are welded below a main beam (1) of the standardized hoisting tool, four upper lifting lugs (4) of the standardized hoisting tool are arranged above the lower lifting lugs and are used as hoisting points, the steel anchor beam (19) is hoisted by adopting four-point hoisting of the steel anchor beam (19), and the steel anchor beam (19) is connected with the steel anchor beam (19) through a hoisting steel wire rope pull ring (8) and a suspension steel wire rope (71);
6) installing a first section of steel anchor beam: before a first section of steel anchor beam (19) is installed, a bidirectional guide limiting support (46) is installed, a steel plate embedded part (30) and an anchor rod (33) of the embedded part are embedded in first section concrete of a transverse bridge direction of the inner wall of a tower column, a bottom cross beam (32) of the bidirectional guide limiting support is welded on a bottom fixing steel plate (34) of the limiting support to serve as a bottom main beam, two trusses serving as the bidirectional guide limiting support (46) are arranged on the bottom main beam in the bridge direction, after the concrete of the tower column is poured, the bottom cross beam (32) of the bidirectional guide limiting support is welded on the bottom fixing steel plate (34) of the limiting support, and a limiting block (24), a transverse adjusting jack (25), a longitudinal adjusting support beam (37), a longitudinal adjusting jack (38) and a reaction frame (42) are arranged on the bidirectional guide limiting support (46) and used for accurately positioning and adjusting the steel anchor;
7) the steel anchor beam tower is connected with a high part: after the concrete of the upper section of tower column is poured, the top surface of the steel anchor beam (19) is cleaned, the steel anchor beam (19) of the standard section is prepared to be hoisted, four points are adopted to hoist the steel anchor beam (19), and a stiffening core framework (13) arranged on a poured segment is used for assisting in accurate installation, an upper lifting lug (4) of the shaped lifting appliance is connected with a lifting steel wire rope (71), the lower part of a lower lifting lug (5) of the shaped lifting appliance is connected with one end of a suspension steel wire rope (7), the other end of the suspension steel wire rope (7) is connected with a lifting steel wire rope pull ring (8), after a steel anchor beam (19) is lifted to a proper position, the positioning steel cable (21) is connected with the hook (11), the chain pull ring (22) is connected with the chain block (12), the position of the suspended steel anchor beam (19) can be accurately controlled by pulling the manual pull rod (10), after the upper and lower steel anchor beams (19) are aligned, butting and temporarily fixing a construction site temporary matching piece (14) arranged at the top of the installed steel anchor beam (19);
8) controlling the installation precision of the steel anchor beam and the steel bracket: the installation accuracy control of the steel anchor beam (19) and the steel corbel (18) is characterized in that the steel anchor beam (19) and the steel corbel are subjected to temperature and wind correction and accurate positioning first sections, when the steel anchor beam (19) is installed at a certain height, a steel gasket is adopted for correcting the deviation and is arranged at the position where the steel anchor beam (19) is in butt joint with the steel corbel (18) in groups, and the deviation correcting gasket is arranged in one layer in each batch.
2. The construction method of the cable tower box-type steel anchor beam according to claim 1, wherein a split heads (51) is provided on the upper portion of a coupled steel anchor beam-shaped split heads bottom bracket (53) of a field assembly jig (69) with a guiding fixture, a box-type anchor beam resting groove plate (47) is provided above the split heads (51), a box-type anchor beam fixing pull rod (61) is provided on the upper portion thereof, a corbel wall plate resting groove plate (57) is provided near the bottom of the split heads bottom bracket (53), a corbel adjusting jack (56) and a wall plate resting groove (50) are provided thereon, a bottom bracket cross brace (52) is provided on the lower portion of the split heads bottom bracket (53), and a transverse connecting beam (54) and a bottom bracket diagonal brace (55) are provided between the two split heads bottom brackets (53).
3. The construction method of the cable tower box-type steel anchor beam as claimed in claim 1, wherein the assembling adjusting devices (70) are symmetrically arranged at the upper part of the assembling guide clamping frame (66), the end parts at both sides of the assembling guide clamping frame are provided with the vertical rods (64), the middle part of the vertical rod of the assembling guide clamping frame (66) is provided with the wall plate adjusting jack (60), and the wall plate adjusting jack (60) is abutted on the bracket wall plate (9) for adjusting the elevation of the bracket wall plate (9) in the horizontal direction.
4. The construction method of the cable tower box type steel anchor beam according to claim 1, characterized in that the periphery of the top of the main beam (1) of the shaped lifting appliance is welded with the upper lifting lugs (4) of the shaped lifting appliance at an angle of 45 degrees, the upper lifting lugs (4) of the shaped lifting appliance are welded with the axis of the main beam (1) of the shaped lifting appliance at an angle of 18 degrees, the bottom of the main beam (1) of the shaped lifting appliance is provided with the lower lifting lugs (5) of the shaped lifting appliance, the parallel connection (3) of the shaped lifting appliance is arranged between the main beams (1) of the shaped lifting appliance, the parallel connection (3) of the shaped lifting appliance is provided with the inclined struts (2) of the shaped lifting appliance, and the cut limbs (6) of the parallel connection (3) of the shaped lifting appliance are welded with the main beam (1) of.
5. The construction method of the cable tower box-type steel anchor beam according to claim 1, wherein the bidirectional guide limit bracket (46) is composed of an inclined strut (26) of the limit bracket, a vertical rod (27) of the limit bracket, a scissor strut (28) of the limit bracket, a bottom cross beam (32) of the bidirectional guide limit bracket, a cross strut (35) of the limit bracket, a top cross beam (36) of the limit bracket and a top parallel connection (40) of the limit bracket, the top cross beam (36) of the limit bracket is arranged at the top of the vertical rod (27) of the limit bracket, the bottom cross beam (32) of the bidirectional guide limit bracket is arranged at the bottom of the limit bracket, the cross strut (35) of the limit bracket is arranged between the middle parts of the vertical rods (27) of the, inclined struts (26) of the limiting support are respectively arranged between the cross strut (35) of the limiting support and the top cross beam (36) of the limiting support as well as between the cross strut and the bottom cross beam (32) of the bidirectional guide limiting support.
6. The construction method of the cable tower box section steel anchor beam according to claim 5, wherein the top parallel connection (40) of the limiting bracket is arranged between the tops of the vertical rods (27) of the limiting bracket, the height adjusting jacks (39) are arranged above two ends of the top parallel connection (40) of the limiting bracket, and the cross braces (28) of the limiting bracket are arranged between the top parallel connection (40) of the limiting bracket and the vertical rods (27) of the limiting bracket.
7. The construction method of the cable tower box-type steel anchor beam according to claim 1, wherein a longitudinal adjusting support beam (37), a limiting block (24), a transverse adjusting jack (25) and a reaction frame (42) are arranged above the top cross beam (36) of the limiting bracket, one end of the transverse adjusting jack (25) is propped against one side of a steel anchor beam steel plate (43) at the side of the steel anchor beam (19), the other end of the transverse adjusting jack is propped against the reaction frame (42), the other side of the steel anchor beam steel plate (43) is provided with the limiting block (24), and the longitudinal adjusting support beam (37) is arranged above the top cross beam (36) of the limiting bracket and the height adjusting jack (39).
8. The method for constructing a cable tower box section steel anchor beam according to claim 1, wherein the suspension wire (59) is suspended from a suspension rod (64) with a suspension ball (49) thereunder.
9. The construction method of the cable tower box-type steel anchor beam as claimed in claim 1, wherein the splicing adjusting device (70) is composed of a suspension steel wire (65) and a hoisting device (67), and the suspension steel wire (65) is connected with the steel anchor beam (19) and the corbel wall plate (9).
10. A cable tower box-type steel anchor beam, characterized in that it is constructed by the construction method of the cable tower box-type steel anchor beam according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201911227339.4A CN110886228A (en) | 2019-12-04 | 2019-12-04 | Cable tower box type steel anchor beam and construction method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911227339.4A CN110886228A (en) | 2019-12-04 | 2019-12-04 | Cable tower box type steel anchor beam and construction method |
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| CN110886228A true CN110886228A (en) | 2020-03-17 |
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