CN112144417A - Construction device and construction method for hollow coping of special-shaped pier gem - Google Patents
Construction device and construction method for hollow coping of special-shaped pier gem Download PDFInfo
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- CN112144417A CN112144417A CN202011086906.1A CN202011086906A CN112144417A CN 112144417 A CN112144417 A CN 112144417A CN 202011086906 A CN202011086906 A CN 202011086906A CN 112144417 A CN112144417 A CN 112144417A
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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
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Abstract
The invention provides a construction device and a construction method for an opposite-shaped pier gem hollow bent cap, belongs to the technical field of bridge construction, and effectively solves the problems that an opposite-shaped tie beam and an opposite-shaped bent cap are difficult to construct or high in construction cost through a conventional construction method. This technical scheme includes the support component of opposite sex pier stud construction part, opposite sex straining beam construction part, the hollow bent cap construction part of precious stone, tie and bent cap, and the support component includes the tie support frame and sets up the external mold support frame of the bent cap outside template on tie support piece, and tie support frame fixedly connected with drawknot part, the tie top is provided with the hollow portion support frame of bent cap. The invention has the beneficial effects that: the problem that the conventional construction method is difficult to construct is solved, the pressure of tight construction period of a project is reduced, the using amount of steel is reduced, the construction efficiency is improved, and the economic efficiency is remarkable.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a construction device and a construction method for an opposite pier gem hollow capping beam.
Background
With the rapid development of national infrastructure construction, in order to meet the requirement of attractive appearance of bridge structure construction, a bridge in a special structural form continuously emerges, and higher requirements are provided for bridge construction technology. The irregularity of each structure increases the construction degree of difficulty, because pier shaft height is great, adopt the steel pipe stand to set up the support and pour, great to steel construction volume, neither economical also increased construction safety risk, to the hollow bent cap integrated configuration of opposite sex's mound precious stone, current construction technique can not be
The construction task is completed efficiently and high-quality.
Therefore, a construction device and a method which can solve the problem of difficulty in construction control of the special-shaped pier gem hollow bent cap are urgently needed to be developed, the construction efficiency of the special-shaped piers is improved, the construction quality of a bridge structure is guaranteed, and the construction safety risk of the bridge structure is reduced.
Disclosure of Invention
In order to solve the defects of the prior art, a construction structure system and a construction method which can be conveniently operated are provided, and the reduction of the weight of the construction structure system and the construction method
The pressure of project construction period is tight, the steel consumption is reduced, and the construction efficiency and the economic benefit are improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention provides a construction device for an opposite-sex pier gem hollow bent cap, which comprises an opposite-sex pier stud construction part, an opposite-sex tie beam construction part, a gem hollow bent cap construction part, a tie beam and a support part of the bent cap;
the supporting part comprises a tie beam supporting frame and an outer mold supporting frame of a cover beam outer side template arranged on the tie beam supporting part;
the tie beam support frame is fixedly connected with a tie component;
and the top of the tie beam is provided with a hollow part support frame of the cover beam.
The pier stud construction component comprises a template panel, a plane template and an arc template are correspondingly arranged on the outer side of the template panel according to the shape of the template panel, and template transverse ribs are uniformly arranged among the template panel, the plane template and the arc template;
the outer side of the plane template is fixedly connected with a back edge;
two ends of each back edge are respectively and fixedly connected with the adjacent ends of the adjacent back edges through fastening angle steel to form external diagonal draw bars;
an inner transverse pull rod and an inner longitudinal pull rod are arranged between the opposite back ridges.
The tie beam support frame comprises reserved holes which are arranged on the pier columns at the bottom side of the tie beam in a penetrating mode, each pier column is provided with 2 reserved holes, and each reserved hole is located at the same horizontal height;
a supporting steel bar penetrates through each preformed hole, two ends of each supporting steel bar are located on the outer side of each preformed hole, and the section diameter of each supporting steel bar is matched with the inner diameter of each preformed hole;
the upper sides of the end parts of the supporting steel bars positioned on the same side are provided with supporting cross beams, two supporting cross beams positioned on the inner side of the pier stud are correspondingly provided with cross beam counter-pulling holes, and cross beams are arranged in the corresponding counter-pulling holes in a penetrating manner to fasten the supporting cross beams by using cross beams and pull rods;
and a plurality of branch supporting distribution beams are uniformly distributed between the two supporting cross beams positioned on the inner side of the pier stud, and steel pipe supports are erected at the tops of the branch supporting distribution beams to form bottom membrane supports of the tie beams.
The drawknot component comprises two upper shoulder pole beams symmetrically arranged at the bottoms of the hollow parts at the two sides of the bent cap, and each upper shoulder pole beam is horizontally arranged;
and the end parts of the two supporting cross beams which are positioned in the same direction corresponding to each upper carrying pole beam are respectively provided with a lower carrying pole beam, and a tie rod is fixedly connected between the two ends of each lower carrying pole beam and the two ends of the corresponding upper carrying pole beam.
The drawknot component comprises a connecting steel plate fixedly connected to the lower side of the supporting cross beam through a connecting bolt, the bottom of the connecting steel plate is fixedly connected with one end of a drawknot beam which is vertically arranged, the other end of the drawknot beam is fixedly connected with the lower drawknot beam, the bottom of the lower drawknot beam is fixedly connected with a tripod, and the bottom end of the drawknot rod is fixed on the tripod through a fastening nut.
The two outer mold supporting frames are respectively arranged at two ends of the two supporting cross beams;
each outer mold supporting frame comprises a plurality of stand columns which are symmetrically and vertically arranged on the front side and the rear side of each supporting cross beam, a top cross beam is sequentially connected between the top ends of the stand columns positioned on the same side, a middle cross beam is sequentially connected between the middle parts of the stand columns positioned on the same side, and a transverse cross brace is arranged between the top cross beam and the middle cross beam which are connected between the two adjacent stand columns positioned on the same side and the two stand columns;
the top of each top cross beam is symmetrically and uniformly provided with a plurality of outer mold distribution beams;
the bottom end of each upright post is fixedly connected with the supporting beam through a fixed steel plate;
longitudinal cross braces are arranged between the adjacent upright columns on the front side and the rear side, and longitudinal cross beams are fixedly connected between the two outer mold distribution beams which are adjacent to each other in the front and the rear side.
And the two outer mold supporting frames are respectively provided with an outer side shaping template of the bent cap construction part, and a plurality of fastening pull rods are horizontally arranged between the two outer side shaping templates.
A construction method of a hollow bent cap construction device for special-shaped pier gemstones comprises the following steps:
the method comprises the following steps: installing construction parts of the pier stud, namely firstly installing a 6-8 mm steel plate as a pier body template panel, installing a 14-16 mm steel plate as a connecting plate, then installing a plane template arc-surface template and a template transverse rib adopting No. 10-12 channel steel, adopting double No. 16-18 channel steel for a back edge, adopting external diagonal draw bars to pull the four corners of the template oppositely, controlling the vertical spacing between 0.7m and 0.75m, controlling the spacing between internal transverse draw bars and the spacing between internal longitudinal draw bars to be 1m to 1.5m, adopting 30-32 mm round steel for the transverse draw bars and the longitudinal draw bars, and finally pouring the pier stud;
step two: constructing the pier stud to the position of 1.85-1.90 m of the bottom of an opposite-nature tie beam, pre-burying steel bar preformed holes, controlling the distance between the top of each preformed hole and the bottom of the tie beam to be 1.7-1.75 m after construction is finished, arranging the preformed holes along the line direction of the pier stud, arranging two preformed holes on each pier stud, controlling the distance between the center of each preformed hole at an arc corner and the outermost edge of the pier stud to be 0.7-0.8 m, controlling the distance between the inner side of each preformed hole and the inner side of the pier stud to be 0.5-0.6 m, inserting a supporting steel bar into each preformed hole, wherein the diameter of the supporting steel bar is 120-140 mm, the inner diameter of each preformed hole is 2-3 cm larger than the diameter of the supporting steel bar, and the length of the supporting steel bar spans two sides of the pier stud is 10-15 cm;
step three: placing a supporting cross beam on two sides of the supporting steel bar, wherein the supporting cross beam is made of double-spliced I45B I-shaped steel, the length of the supporting cross beam meets the construction requirement of an upper capping beam, cross beam counter-pulling holes are formed in the inner sides of the pier studs of the supporting cross beam, the supporting cross beam is pre-tightened and fixed through counter-pulling screws after installation is completed, supporting distribution beams are arranged on the supporting cross beam on the inner sides of the two pier studs, the supporting distribution beams are made of I25b I-shaped steel, the distance is controlled to be 50cm-60cm, and a steel pipe support is erected on the upper portion of each supporting cross beam to form the tie beam bottom;
step four: installing a tie beam bracket and a template, pouring concrete, after the design strength is reached, respectively arranging upper shoulder pole beams at two sides of the hollow position of the bent cap, respectively arranging lower shoulder pole beams at two ends of the supporting beam, and fastening the supporting beam after the upper shoulder pole beam and the lower shoulder pole beam are tied and fixed through a tying rod;
step five: after the tie beam support frame is accepted, outer mold support frames are installed at the upper parts of two sides of the tie beam support frame, outer side shaping templates are erected on the outer mold support frames, the cover beam ventral reinforcing steel bars are installed, then inner film and hollow part support frames are installed, the support frames are formed by arranging steel pipe supports at the interval of 60cm 30cm-63cm 33cm, 10cm-12cm square timbers are arranged at the upper part and the lower part to serve as jacking bottom supports, inclined steel pipe supports are arranged at two overhanging parts, horizontal cross rods are arranged at the interval of 60cm-65cm, scissors are fully supported, the template fastening pull rods are formed by 32 fine rolling threaded steel, six back ribs are arranged at intervals, 3 back ribs are arranged on the fastening pull rods, 3 back ribs are arranged on each back rib, the fastening pull rods are penetrated from the middle to two sides, two connectors are arranged in the middle, and meanwhile, the fastening pull rods are provided with limiting devices for the inner mold, the thickness of the web of the cover beam is ensured;
step six: and pouring the bent cap twice, pouring the upper opening of the inner space for the first time, and finishing the whole pouring for the second time.
The invention has the beneficial effects that:
1. the upper structure supporting system is more reasonable and stable through the design of the whole structure system, so that the construction safety of the upper template structure is ensured, meanwhile, the investment of construction temporary facilities is reduced, the construction cost of the project is reduced, and the construction quality of the project is improved;
2. the supporting system adopts pier stud preformed hole, sets up the rod iron and supports, the crossbeam is to drawing the fastening at pier stud department finish rolling screw-thread steel, and the outer suspended structure of crossbeam when the hollow bent cap in later stage construction upper portion adopts the hollow department of precious stone to set up the carrying pole roof beam, and the fastening is to drawing with supporting beam tip finish rolling screw-thread steel, forms reliable supporting system.
3. When the multiple tie beams are arranged, the supporting system moves forwards upwards along with construction, and the structural system can be recycled.
4. The device and the construction method have the advantages of simple operation, high efficiency and reduction of stress during construction period.
Drawings
FIG. 1 is a schematic diagram of a suitable structure of the present invention.
Fig. 2 is a schematic view of the anisotropic pier template and the reinforcing structure of the invention.
FIG. 3 is a schematic view of the tie beam support frame structure of the present invention.
Fig. 4 is a schematic structural view of a bent cap construction member according to the present invention.
FIG. 5 is a schematic view of the outer mold support of the present invention.
Fig. 6 is a schematic structural view of a drawknot component of the present invention.
Wherein the reference numerals are: 1. pier studs; 1-1, external diagonal draw bars; 1-2, an inner transverse pull rod; 1-3, an inner longitudinal tie rod; 1-4, fastening angle steel; 1-5, arc-shaped templates; 1-6, a plane template; 1-7, template panel; 1-8, template transverse ribs; 1-9, dorsal ridges; 2. tying a beam; 3. a tie beam support frame; 3-1, supporting the cross beam; 3-2, reserving holes; 3-3, supporting the distribution beam; 3-4, a cross beam is opposite to the pull rod; 3-5, oppositely pulling holes; 3-6, supporting a steel bar; 4. an outer mold support frame; 4-1, upright columns; 4-2, transversely supporting the scissors; 4-3, a middle cross beam; 4-4, a top cross beam; 4-5, longitudinal beams; 4-6, longitudinal cross bracing; 4-7, fixing a steel plate; 4-8, external mold distribution beams; 5. a pulling member; 5-1, a tie rod; 5-2, a tripod; 5-3, tying the shoulder pole beam; 5-4, connecting steel plates; 5-5, connecting bolts; 5-6, putting the shoulder pole beam on; 5-7, lower shoulder pole beam; 6. a capping beam; 6-1, shaping the template at the outer side; 6-2, fastening a pull rod by the template; 6-3, a support frame.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
Example 1
Referring to fig. 1 to 6, an embodiment of the invention provides a construction device and a construction method for a special-shaped pier gem hollow capping beam, the construction device comprises a construction part for a special-shaped pier stud 1, a construction part for a special-shaped tie beam 2, a construction part for a gem hollow capping beam 6, a support part for the tie beam 2 and the capping beam 6, the support part comprises a tie beam support frame 3 and an outer mold support frame 4 arranged on a capping beam outer side template on the tie beam support frame 3, the tie beam support frame 3 is fixedly connected with a tie part 5, and the top of the tie beam 2 is provided with a hollow part support frame 6-3 for the capping beam 6.
The pier column 1 construction component comprises formwork panels 1-7, planar formworks 1-6 and arc formworks 1-5 are correspondingly arranged on the outer sides of the formwork panels 1-7 according to the shapes of the formwork panels 1-7, formwork transverse ribs 1-8 are uniformly arranged between the formwork panels 1-7 and the planar formworks 1-6 and the arc formworks 1-5, back ridges 1-9 are fixedly connected to the outer sides of the planar formworks 1-6, two ends of each back ridge 1-9 are respectively fixedly connected with outer diagonal draw bars 1-1 through fastening angle steel 1-4 together with the close ends of the adjacent back ridges 1-9, and inner transverse draw bars 1-2 and inner longitudinal draw bars 1-3 are arranged between the opposite back ridges 1-9.
The tie beam support frame 3 comprises a pier stud 1 at the bottom side of the tie beam 2, through preformed holes 3-2 are arranged on the pier stud 1, 2 preformed holes 3-2 are arranged on each pier stud 2, each preformed hole 3-2 is positioned at the same horizontal height, a support steel bar 3-6 is arranged in each preformed hole 3-2 in a penetrating way, two ends of each support steel bar 3-6 are positioned at the outer side of each preformed hole 3-2, the section diameter of each support steel bar 3-6 is matched with the inner diameter of each preformed hole 3-2, a support cross beam 3-1 is arranged at the upper side of the end part of each support steel bar 3-6 positioned at the same side, cross beam counter-pulling holes 3-5 are correspondingly arranged on two support cross beams 3-1 positioned at the inner side of the pier stud 1, cross beam counter-pulling holes 3-5 are correspondingly arranged in corresponding counter-pulling holes 3-5 in a penetrating way, and cross beam counter-pulling rods, a plurality of branch supporting distribution beams 3-3 are uniformly distributed between two supporting cross beams 3-1 positioned at the inner side of the pier stud 1, and steel pipe supports are erected at the tops of the branch supporting distribution beams 3-3 to form bottom membrane supports of the tie beams 2.
The drawknot component 5 comprises two upper carrying pole beams 5-6 symmetrically arranged at the bottoms of the hollow parts at the two sides of the bent cap 6, each upper carrying pole beam 5-6 is horizontally arranged, the end parts of two supporting cross beams 3-1 corresponding to each upper carrying pole beam 5-6 and positioned in the same direction are respectively provided with a lower carrying pole beam 5-7, and a drawknot rod 5-1 is fixedly connected between the two ends of each lower carrying pole beam 5-7 and the two ends of the corresponding upper carrying pole beam 5-6. The drawknot component 5 comprises a connecting steel plate 5-4 fixedly connected to the lower side of the supporting beam 3-1 through a connecting bolt 5-5, the bottom of the connecting steel plate 5-4 is fixedly connected with one end of a drawknot with a vertically arranged carrying pole beam 5-3, the other end of the drawknot carrying pole beam 5-3 is fixedly connected with a lower carrying pole beam 5-7, the bottom of the lower carrying pole beam 5-7 is fixedly connected with a tripod 5-2, and the bottom end of the drawknot rod 5-1 is fixed on the tripod 5-2 through a fastening nut.
The two outer mold supporting frames 4 are respectively arranged at two ends of two supporting beams 3-1, each outer mold supporting frame 4 comprises a plurality of upright posts 4-1 which are symmetrically and vertically arranged on the two supporting beams 3-1 at the front side and the rear side, a top cross beam 4-4 is sequentially connected between the top ends of the upright posts 4-1 at the same side, a middle cross beam 4-3 is sequentially connected between the middle parts of the upright posts 4-1 at the same side, a transverse scissor support 4-2 is arranged between the top cross beam 4-4 and the middle cross beam 4-3 which are connected between the two adjacent upright posts 4-1 at the same side and the two upright posts 4-1, a plurality of outer mold distributing beams 4-8 are symmetrically and uniformly arranged at the top of each top cross beam 4-4, the bottom end of each upright post 4-1 is fixedly connected with the supporting beam 3-1 through a fixed steel plate, longitudinal cross braces 4-6 are arranged between adjacent upright columns 4-1 at the front side and the rear side, and longitudinal cross beams 4-5 are fixedly connected between two outer mold distribution beams 4-8 at the front side and the rear side. The two outer mold supporting frames 4 are respectively provided with an outer shaping template 6-1 of a construction part of a cover beam 6, and a plurality of fastening pull rods 6-2 are horizontally arranged between the two outer shaping templates 6-1.
The construction method of the construction device for the hollow coping of the special pier gem comprises the following steps:
the method comprises the following steps: installing a construction part of a pier stud 1, firstly installing a 6mm steel plate as a pier body template panel 1-7, installing a 14mm steel plate as a connecting plate, then installing a plane template 1-6 arc surface template 1-5 and a template transverse rib 1-8 adopting No. 10 channel steel, adopting double No. 16 channel steel for a back edge 1-9, adopting external diagonal draw bars 1-1 for drawing four corners of the template, wherein the vertical distance is 0.7m, the distance between the internal transverse draw bars 1-2 and the distance between the internal longitudinal draw bars 1-3 are 1m, adopting 30mm round steel for the transverse draw bars 1-2 and the longitudinal draw bars 1-3, and finally pouring the pier stud 1;
step two: constructing a pier stud 1 to a position 1.85m from the bottom of an opposite-sex tie beam 2, pre-burying a steel bar preformed hole 3-2, controlling the distance between the top of the preformed hole 3-2 and the bottom of the tie beam 2 to be 1.7m after construction is finished, arranging the preformed holes 3-2 in the pier stud 1 along the line direction, arranging two preformed holes 3-2 in each pier stud 1, controlling the distance between the center of the preformed hole 3-2 at an arc corner and the outermost edge of the pier stud 1 to be 0.7, controlling the distance between the inner side preformed hole 3-2 and the inner side edge of the pier stud 1 to be 0.5m, inserting a supporting steel bar 3-6 into the preformed holes 3-2, using a steel bar with the diameter of 120m as the supporting steel bar 3-6, controlling the inner diameter of the preformed hole 3-2 to be 2cm larger than that of the supporting steel bar 3-6, and controlling the length of the supporting steel bar 3-6 to span two sides of the pier stud 1;
step three: placing a supporting beam 3-1 on two sides of a supporting steel bar 3-6, wherein the supporting beam 3-1 is made of double I-shaped steel I45B, the length setting meets the construction requirement of an upper cover beam 6, the supporting beam 3-1 is provided with a beam counter-pulling hole on the inner side of a pier stud 1, the supporting beam 3-1 is pre-tightened and fixed through a counter-pulling screw rod after the installation is finished, supporting and distributing beams 3-3 are arranged on the supporting beam 3-1 on the inner sides of the two pier studs 1, the supporting and distributing beams are made of I25b I-shaped steel, the distance is controlled to be 50cm, and a steel pipe support is erected on the upper part of the supporting beam to form a tie beam;
step four: installing a bracket and a template of a tie beam 2, pouring concrete, after the design strength is reached, respectively arranging upper shoulder pole beams 5-6 at two sides of the hollow position of the bent cap 1, respectively arranging lower shoulder pole beams 5-7 at two ends of a supporting beam 3-1, and fastening the supporting beam 3-1 after the upper shoulder pole beams 5-6 and the lower shoulder pole beams 5-7 are tied and fixed through a tie rod 5-1;
step five: after the tie beam support frame 3 is accepted, the outer mold support frames 4 are installed at the upper parts of the two sides of the tie beam support frame 3, the outer side forming templates 6-1 are erected on the outer mold support frames 4, the web-side reinforcing steel bars of the bent caps 1 are installed, then the inner film and hollow part support frames 6-3 are installed, the support frames 6-3 adopt steel pipe support frames with the interval of 60-30 cm, 10cm square timbers are arranged at the upper part and the lower part, the bottom supports are supported, the overhanging parts at the two sides are provided with inclined steel pipe supports, the horizontal cross bars are arranged according to the interval of 60cm, the shears are fully supported, the template fastening pull rods 6-2 adopt 32 phi finish rolling screw steel, six back ribs are arranged at intervals, 3 fastening pull rods 6-2 are arranged on the back ribs in total, 3 fastening pull rods 6-2 are arranged on each back rib, the fastening pull rods 6-2 are penetrated from the middle to the two sides, two connectors are arranged in the middle, and the, the thickness of the web of the bent cap 1 is ensured;
step six: pouring is carried out on the bent cap 1 in two times, the upper opening of the inner space is poured for the first time, and all pouring is completed for the second time.
Example 2
Referring to fig. 1 to 6, the rest of the embodiment 1 is the same as that of embodiment 1, except that: when the pier body is constructed, 8mm steel plates are adopted as the pier body template panels, 16mm steel plates are used as the connecting plates, 12 # channel steel is adopted as the pier body template transverse ribs, 18 # channel steel is adopted as the back ridges, the vertical spacing between the template diagonal draw bars is 0.75m, the spacing between the internal transverse draw bars and the longitudinal draw bars is 1.5m, and 32mm round steel is adopted;
when the tie beam support frame is constructed, pre-burying a reserved hole at the position of 1.90m from the bottom of a tie beam in the pier column construction, controlling the distance between the reserved hole and the bottom of the tie beam to be 1.75m, controlling the distance between the center of the reserved hole at an arc angle and the outermost edge of the pier column to be 0.8m, controlling the distance between an inner reserved hole and the inner edge of the pier column to be 0.6m, adopting a 140mm steel bar as a supporting steel bar, wherein the inner diameter of the reserved hole is 3cm larger than the diameter of the supporting steel bar, the length of the supporting steel bar spans 15cm from two sides of the pier column, and the distance between supporting and distributing beams is;
the space between the supporting steel pipes adopted by the hollow part supporting frame of the capping beam is 63cm x 33cm, 12cm square timbers are arranged at the upper part and the lower part to serve as jacking bottom supports, and the horizontal cross rods are arranged at the interval of 65 cm.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The construction device for the special-shaped pier hollow gem capping beam is characterized by comprising a construction part for a special-shaped pier stud (1), a construction part for a special-shaped tie beam (2), a construction part for a gem hollow capping beam (6), a tie beam (2) and a support part for the capping beam (6);
the supporting part comprises a tie beam supporting frame (3) and an outer die supporting frame (4) of a cover beam outer side template arranged on the tie beam supporting piece (3);
the tie beam support frame (3) is fixedly connected with a tie component (5);
and a hollow part support frame (6-3) of the bent cap (6) is arranged at the top of the tie beam (2).
2. The opposite pier gem hollow capping beam construction device according to claim 1, characterized in that the pier stud (1) construction components comprise formwork panels (1-7), wherein flat formworks (1-6) and arc formworks (1-5) are correspondingly arranged on the outer sides of the formwork panels (1-7) according to the shapes of the formwork panels (1-7), and formwork transverse ribs (1-8) are uniformly arranged among the formwork panels (1-7), the flat formworks (1-6) and the arc formworks (1-5);
the outer sides of the plane templates (1-6) are fixedly connected with back edges (1-9);
two ends of each back edge (1-9) are respectively fixedly connected with the close ends of the adjacent back edges (1-9) through fastening angle steel (1-4) to form external diagonal draw bars (1-1);
an inner transverse pull rod (1-2) and an inner longitudinal pull rod (1-3) are arranged between the opposite back ridges (1-9).
3. The opposite pier gem hollow capping construction device according to claim 2, characterized in that the tie beam support frame (3) comprises reserved holes (3-2) which are arranged on the pier stud (1) at the bottom side of the tie beam (2) and penetrate through the tie beam, each pier stud (2) is provided with 2 reserved holes (3-2), and each reserved hole (3-2) is positioned at the same horizontal height;
a supporting steel bar (3-6) penetrates through each preformed hole (3-2), two ends of each supporting steel bar (3-6) are located on the outer side of each preformed hole (3-2), and the diameter of the cross section of each supporting steel bar (3-6) is matched with the inner diameter of each preformed hole (3-2);
supporting cross beams (3-1) are arranged on the upper sides of the end parts of the supporting steel bars (3-6) positioned on the same side, cross beam counter-pulling holes (3-5) are correspondingly arranged on the two supporting cross beams (3-1) positioned on the inner side of the pier stud (1), and cross beam counter-pulling rods (3-4) are arranged in the corresponding counter-pulling holes (3-5) in a penetrating manner to fasten the supporting cross beams (3-1);
a plurality of branch supporting distribution beams (3-3) are uniformly distributed between the two supporting cross beams (3-1) positioned on the inner side of the pier stud (1), and steel pipe supports are erected at the tops of the branch supporting distribution beams (3-3) to form base membrane supports of the tie beams (2).
4. The hollow coping construction device of opposite pier gem according to claim 3, characterized in that the tie part (5) comprises two upper shoulder pole beams (5-6) symmetrically arranged at the bottom of the hollow part at both sides of the coping (6), each upper shoulder pole beam (5-6) is horizontally arranged;
lower carrying pole beams (5-7) are arranged at the end parts of the two supporting cross beams (3-1) corresponding to the upper carrying pole beams (5-6) in the same direction, and a tie rod (5-1) is fixedly connected between the two ends of each lower carrying pole beam (5-7) and the two ends of the corresponding upper carrying pole beam (5-6).
5. The hollow coping construction device according to claim 4, wherein said drawknot component (5) comprises a connecting steel plate (5-4) fixedly connected to the lower side of said supporting beam (3-1) through a connecting bolt (5-5), the bottom of said connecting steel plate (5-4) is fixedly connected with one end of a stretcher beam (5-3) vertically arranged, the other end of said drawknot stretcher beam (5-3) is fixedly connected with said lower stretcher beam (5-7), the bottom of said lower stretcher beam (5-7) is fixedly connected with a tripod (5-2), and the bottom end of said drawknot rod (5-1) is fixed on said tripod (5-2) through a fastening nut.
6. The opposite pier gem hollow capping beam construction device as claimed in claim 5, wherein the number of the external mold supporting frames (4) is two, and the two external mold supporting frames are respectively arranged at two ends of the two supporting cross beams (3-1);
each outer mold supporting frame (4) comprises a plurality of upright columns (4-1) which are symmetrically and vertically arranged on two supporting cross beams (3-1) at the front side and the rear side, top cross beams (4-4) are sequentially connected between the top ends of the upright columns (4-1) at the same side, middle cross beams (4-3) are sequentially connected between the middle parts of the upright columns (4-1) at the same side, and transverse cross braces (4-2) are arranged between the top cross beams (4-4) and the middle cross beams (4-3) which are connected between the two upright columns (4-1) and two adjacent upright columns (4-1) at the same side;
the top of each top cross beam (4-4) is symmetrically and uniformly provided with a plurality of outer mold distribution beams (4-8);
the bottom end of each upright post (4-1) is fixedly connected with the supporting beam (3-1) through a fixed steel plate (4-7);
longitudinal cross braces (4-6) are arranged between the adjacent upright columns (4-1) at the front side and the rear side, and longitudinal cross beams (4-5) are fixedly connected between the two adjacent outer mold distribution beams (4-8).
7. The opposite pier gem hollow capping beam construction device according to claim 6, characterized in that the two outer formwork support frames (4) are respectively provided with an outer shaping formwork (6-1) of the capping beam (6) construction part, and a plurality of fastening pull rods (6-2) are horizontally arranged between the two outer shaping formworks (6-1).
8. The construction method of the hollow coping construction device of the opposite pier gem according to the claim 1, which is characterized in that the method comprises the following steps:
the method comprises the following steps: the construction parts for installing the pier stud (1) are firstly installed by using a 6mm-8mm steel plate as a pier body template panel (1-7), a 14mm-16mm steel plate is used as a connecting plate, then installing a plane template (1-6) an arc template (1-5) and a template transverse rib (1-8) adopting No. 10-12 channel steel, adopting double No. 16-18 channel steel for a back edge (1-9), adopting external diagonal draw bars (1-1) to pull the four corners of the template oppositely, controlling the vertical spacing between 0.7m and 0.75m, controlling the spacing between the internal transverse draw bars (1-2) and the spacing between the internal longitudinal draw bars (1-3) between 1m and 1.5m, the transverse pull rod (1-2) and the longitudinal pull rod (1-3) are both made of round steel with the thickness of 30-32 mm, and finally the pier stud (1) is poured;
step two: constructing the pier stud (1) to the position of 1.85-1.90 m at the bottom of an opposite-nature tie beam (2), starting pre-burying a steel bar preformed hole (3-2), controlling the top distance of the preformed hole (3-2) to be 1.7-1.75 m from the bottom of the tie beam (2) after construction is finished, arranging the preformed hole (3-2) along the line direction of the pier stud (1), arranging two preformed holes (3-2) for each pier stud (1), controlling the center distance of the preformed hole (3-2) at an arc angle to be 0.7-0.8 m from the outermost edge of the pier stud (1), controlling the distance of the inner side of the pier stud (1) to be 0.5-0.6 m from the inner side of the pier stud (1), inserting a supporting steel bar (3-6) into the preformed hole (3-2), and inserting the supporting steel bar (3-6) into the preformed hole (3-2), wherein the diameter of the supporting steel bar (3-6) is 120-140 mm, the inner diameter of the preformed hole (3-2) is 2cm-3cm larger than the diameter of the supporting steel bar (3-6), and the length of the supporting steel bar (3-6) extending out of two sides of the pier column (1) is 10cm-15 cm;
step three: placing a supporting cross beam (3-1) on two sides of the supporting steel bar (3-6), wherein the supporting cross beam (3-1) is made of double-spliced I45B I-steel, the length setting meets the construction requirement of an upper cover beam (6), cross beam counter-pulling holes are formed in the inner sides of the pier stud (1) of the supporting cross beam (3-1), the supporting cross beam (3-1) is pre-tightened and fixed through counter-pulling screw rods after installation is completed, supporting and distributing beams (3-3) are arranged on the supporting cross beam (3-1) on the inner sides of the two pier studs (1), the supporting and distributing beams are made of I25b I-steel, the distance is controlled to be 50cm-60cm, and steel pipe supports are erected on the upper portions of the supporting cross beams to form a bottom die supporting system of the tie beam (2);
step four: installing a bracket and a template of a tie beam (2), pouring concrete, after the design strength is reached, respectively arranging upper shoulder pole beams (5-6) at two sides of the hollow position of the bent cap (1), respectively arranging lower shoulder pole beams (5-7) at two ends of the supporting beam (3-1), and fastening the supporting beam (3-1) after the upper shoulder pole beams (5-6) and the lower shoulder pole beams (5-7) are fixed by pulling through a pulling rod (5-1);
step five: after the tie beam support frame (3) is accepted, outer mold support frames (4) are installed at the upper parts of two sides of the tie beam support frame (3), outer side shaping templates (6-1) are erected on the outer mold support frames (4), ventral reinforcing steel bars of the cover beam (1) are installed, then inner film and hollow part support frames (6-3) are installed, the support frames (6-3) adopt steel pipe support frames with the spacing of 60cm, 30cm, 63cm, 33cm, 10cm-12cm square timbers are arranged at the upper part and the lower part as jacking bottom supports, inclined steel pipe supports are arranged at the overhanging parts of two sides, horizontal cross bars are arranged at the spacing of 60cm-65cm, scissors are fully distributed, finish rolling deformed steel bars (6-2) are adopted, six back ribs are arranged at intervals, 3 back ribs are totally arranged, and the fastening pull bars (6-2) are arranged, 3 back ribs are arranged on each back rib, the fastening pull rod (6-2) penetrates from the middle to two sides, two connectors are arranged in the middle, and meanwhile, the fastening pull rod (6-2) is provided with a limiting device for an inner die to ensure the thickness of the web plate of the cover beam (1);
step six: and pouring the bent cap (1) twice, pouring the upper opening of the inner space for the first time, and finishing the whole pouring for the second time.
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| CN113526322A (en) * | 2021-07-01 | 2021-10-22 | 中交四公局第一工程有限公司 | Top tied beam construction hanging bracket constructed after reconstruction and extension project of bridge under construction and construction method |
| CN114635368A (en) * | 2022-04-24 | 2022-06-17 | 重庆高速公路集团有限公司 | Nondestructive external dismantling method for hollow pier top construction support and template of bridge |
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