CN114000440A - Truss base installation cantilever structure device and method - Google Patents
Truss base installation cantilever structure device and method Download PDFInfo
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- CN114000440A CN114000440A CN202111513493.5A CN202111513493A CN114000440A CN 114000440 A CN114000440 A CN 114000440A CN 202111513493 A CN202111513493 A CN 202111513493A CN 114000440 A CN114000440 A CN 114000440A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000009434 installation Methods 0.000 title claims description 51
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 66
- 239000010959 steel Substances 0.000 claims abstract description 66
- 238000004873 anchoring Methods 0.000 claims abstract description 54
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 238000010276 construction Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 238000005096 rolling process Methods 0.000 claims abstract description 12
- 210000005069 ears Anatomy 0.000 claims description 16
- 230000000149 penetrating effect Effects 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 14
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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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
- E01D21/10—Cantilevered erection
Abstract
The invention discloses a device and a method for installing a cantilever structure on a truss base, wherein the device comprises a supporting mechanism, a positioning mechanism, an anchoring mechanism and a detection module; the supporting mechanism comprises a first longitudinal supporting beam, a second longitudinal supporting beam and a transverse supporting beam; the positioning mechanism comprises a transverse positioning component, a longitudinal positioning component, a positioning mounting lug and a vertical positioning component; the method comprises the following steps: firstly, pre-burying finish rolling deformed steel bars and hoisting a cantilever structure mounted on a steel truss base; secondly, mounting anchoring of a cantilever structure on the truss base; thirdly, installing a truss base; fourthly, fine adjustment of the truss base; fifthly, pouring a beam section area where the truss base is located; and sixthly, dismounting the device for mounting the cantilever structure on the truss base. The truss base mounting device is reasonable in design and low in cost, is convenient and fast to mount and dismount integrally and can be recycled, and mounting precision of the truss base is improved, so that mounting quality and construction period of a later truss structure are improved.
Description
Technical Field
The invention belongs to the technical field of truss base installation, and particularly relates to a device and a method for installing a cantilever structure on a truss base.
Background
The curved-string steel truss stiffening continuous beam is a novel bridge structure form for railway construction, can effectively reduce the building height of a pier, reduces the construction difficulty and the engineering cost of a foundation and the pier, has outstanding technical and economic advantages, and becomes one of bridge structure forms advocated by the industry in recent years. Due to the requirement of the structural form, the requirement on the mounting precision standard of the whole structure is high, so that the mounting precision of the steel truss is concerned by the industry all the time. The steel truss base is an important component of the steel truss, and the installation quality and the structural performance of the truss structure are directly influenced by the installation of the steel truss base. In the field installation and construction process, the pre-embedding and positioning of the steel truss base becomes a technical problem which needs to be overcome urgently. The installation precision directly influences the overall construction quality and the construction period of the steel truss.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a device for installing the cantilever structure on the truss base, which is reasonable in design, low in cost, convenient to integrally install and disassemble, capable of being repeatedly used, capable of reducing manpower and material resources, realizing longitudinal, transverse and vertical fine adjustment of the truss base, and improving the installation precision of the truss base, so that the installation quality and the construction period of the truss structure in the later period are improved.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a truss pedestal mounting cantilever constructional device which characterized in that: the device comprises a supporting mechanism arranged on a poured bridge section, a positioning mechanism arranged on the supporting mechanism and used for installing a truss base, an anchoring mechanism arranged between the supporting mechanism and the poured bridge section, and a detection module arranged at an overhanging end of the supporting mechanism extending out of the poured bridge section;
the supporting mechanism comprises a first longitudinal supporting beam and a second longitudinal supporting beam which are arranged in parallel, and a plurality of transverse supporting beams arranged between the first longitudinal supporting beam and the second longitudinal supporting beam;
a first cantilever beam and a second cantilever beam are arranged between cantilever ends of the first longitudinal support beam and the second longitudinal support beam, which extend out of the poured bridge section, and the first cantilever beam and the second cantilever beam are arranged in parallel;
the positioning mechanism comprises a transverse positioning component arranged at the overhanging end of the first longitudinal supporting beam and the second longitudinal supporting beam extending out of the poured bridge section, a longitudinal positioning component arranged on the first cantilever beam and the second cantilever beam, a positioning mounting lug extending to the first cantilever beam and the second cantilever beam, and a vertical positioning component arranged on the positioning mounting lug;
the detection module is a horizontal detection module arranged at the overhanging end of the first longitudinal support beam and the second longitudinal support beam extending out of the poured bridge section.
Foretell truss pedestal mounting cantilever constructional device which characterized in that: the number of the transverse positioning components is four, two transverse positioning components are arranged at the overhanging end of the first longitudinal supporting beam, two transverse positioning components are arranged at the overhanging end of the second longitudinal supporting beam, and the transverse positioning components on the first longitudinal supporting beam and the transverse positioning components on the second longitudinal supporting beam are symmetrically arranged;
the transverse positioning component comprises a transverse screw sleeve and a transverse fine-adjustment screw rod penetrating through the transverse screw sleeve, the transverse screw sleeve is arranged at the top of the cantilever end of the first longitudinal supporting beam and the second longitudinal supporting beam extending out of the poured bridge section, and the transverse fine-adjustment screw rod and the lengths of the first longitudinal supporting beam and the second longitudinal supporting beam are vertically arranged.
Foretell truss pedestal mounting cantilever constructional device which characterized in that: the number of the longitudinal positioning components is four, two longitudinal positioning components are arranged on the first cantilever beam, two longitudinal positioning components are arranged on the second cantilever beam, and the longitudinal positioning components on the first cantilever beam and the longitudinal positioning components on the second cantilever beam are symmetrically arranged;
the longitudinal positioning component comprises a longitudinal thread sleeve and a longitudinal fine adjustment screw rod penetrating through the longitudinal thread sleeve, the longitudinal thread sleeve is arranged at the tops of the first cantilever beam and the second cantilever beam, and the lengths of the longitudinal fine adjustment screw rod, the first longitudinal support beam and the second longitudinal support beam are arranged in parallel.
Foretell truss pedestal mounting cantilever constructional device which characterized in that: the number of the positioning and mounting ears is four, the four positioning and mounting ears comprise horizontal parts and vertical parts which are vertically arranged with the horizontal parts, the horizontal parts of the two positioning and mounting ears extend to the first cantilever beam, and the horizontal parts of the two positioning and mounting ears extend to the second cantilever beam;
two be provided with the fine setting clearance between the vertical portion of location installation ear and the first cantilever beam side that is close to the second cantilever beam, two be provided with the fine setting clearance between the vertical portion of location installation ear and the second cantilever beam side that is close to the first cantilever beam.
Foretell truss pedestal mounting cantilever constructional device which characterized in that: the number of the vertical positioning parts is four, four the vertical positioning parts are all installed on four the location installation ears, the vertical positioning parts comprise vertical thread sleeves and vertical fine adjustment screw rods penetrating through the vertical thread sleeves, the bottom end of each vertical fine adjustment screw rod is abutted to the tops of the first cantilever beam and the second cantilever beam, the vertical thread sleeves are fixedly connected with the side surfaces of the horizontal parts in the location installation ears, and the vertical fine adjustment screw rods, the first cantilever beams, the second cantilever beams, the first vertical supporting beams and the second vertical supporting beams are all vertically arranged.
Foretell truss pedestal mounting cantilever constructional device which characterized in that: the anchoring mechanism comprises a plurality of anchoring parts which are arranged along the length direction of the first longitudinal supporting beam and the second longitudinal supporting beam, and each anchoring part comprises an anchoring cross beam arranged at the tops of the first longitudinal supporting beam and the second longitudinal supporting beam and finish-rolled deformed steel bars which penetrate through the anchoring cross beam and a poured bridge section.
Foretell truss pedestal mounting cantilever constructional device which characterized in that: the anchor crossbeam includes that two anchor I-steel and a plurality of connecting plates of laying at anchor I-steel top laid back to back are provided with the accommodation gap between the anchor I-steel, the lower extreme of finish rolling deformed bar is pre-buried in the bridge section of having pour, accommodation gap and steel backing plate are passed to the upper end of finish rolling deformed bar, just finish rolling deformed bar passes the tip of steel backing plate is provided with lock nut.
Meanwhile, the invention also discloses a construction method for installing the truss base, which has simple steps, reasonable design and convenient implementation, and is characterized by comprising the following steps:
step one, pre-burying finish rolling deformed steel bars and hoisting a cantilever structure installed on a steel truss base:
101, pre-burying a plurality of finish-rolled deformed steel bars in the process of forming a poured bridge section; the finish-rolled deformed steel bars are distributed along the longitudinal bridge direction of the poured bridge section;
102, mounting two bottom cushion plates which are arranged in parallel at the top of a poured bridge section; wherein a gap is arranged between the two bottom cushion plates;
103, hoisting the truss base to install the cantilever structure on the poured bridge section; the cantilever ends of the first longitudinal support beam and the second longitudinal support beam extend out of the poured bridge section;
step two, mounting anchoring of a cantilever structure on the truss base:
the upper end of the finish-rolled deformed steel bar penetrates through the accommodating gap and the steel base plate, and a locking nut is installed at the end part of the finish-rolled deformed steel bar penetrating through the steel base plate; the top parts of the first longitudinal supporting beam and the second longitudinal supporting beam are welded with an anchoring beam, the anchoring beam comprises two anchoring I-beams arranged back to back and a plurality of connecting plates arranged at the top parts of the anchoring I-beams, an accommodating gap is formed between the two anchoring I-beams, and the steel base plate is positioned at the top parts of the anchoring I-beams;
step three, mounting a truss base:
step 301, connecting a truss base with four positioning mounting lugs; the truss base is positioned between the four positioning installation lugs, and vertical positioning components are installed on the four positioning installation lugs;
step 302, hoisting a truss base to a cavity surrounded by the first longitudinal supporting beam, the second longitudinal supporting beam, the first cantilever beam and the second cantilever beam;
step four, fine adjustment of the truss base:
step 401, operating two transverse positioning components on a first longitudinal supporting beam and two transverse positioning components on a second longitudinal supporting beam to enable a transverse fine adjustment screw in each transverse positioning component to push a truss base to perform fine adjustment along the transverse bridge direction until the truss base meets the design position of the transverse bridge direction;
step 402, operating two longitudinal positioning components on the first cantilever beam and two longitudinal positioning components on the second cantilever beam to enable a longitudinal fine adjustment screw in the longitudinal positioning components to push the truss base to perform fine adjustment along the longitudinal bridge direction until the truss base meets the design position of the longitudinal bridge direction;
step 403, operating four vertical positioning parts, wherein in the process of screwing the vertical fine adjustment screw rods, the bottom ends of the vertical fine adjustment screw rods are always abutted to the tops of the first cantilever beam and the second cantilever beam, the vertical fine adjustment screw rods rotate to drive the vertical thread sleeves to move up and down, the vertical thread sleeves move up and down to drive the truss base to be finely adjusted vertically through the positioning mounting lugs until the truss base meets the vertical design position of the beam end;
pouring a beam section area where the truss base is located:
erecting a template, and pouring concrete in a beam section area where a truss base is located until the top of a cast-in-place beam section is flush with the top of a poured bridge section so as to embed the truss base in the cast-in-place beam section;
step six, dismantling the truss base installation cantilever structure device:
601, disconnecting the operation truss base from the four positioning and mounting lugs, and removing the positioning and mounting lugs;
step 602, disassembling the locking nut, and lifting the truss base to install the cantilever structure device until the truss base is separated from the cast-in-place beam construction section and the cast bridge section, thereby completing the installation of the truss base.
The above method is characterized in that: in the fine adjustment process of the truss base, the horizontal detection module detects the horizontal state of the overhanging end of the first longitudinal supporting beam and the second longitudinal supporting beam extending out of the poured bridge section, and when the overhanging end of the first longitudinal supporting beam and the second longitudinal supporting beam extending out of the poured bridge section inclines, the horizontal detection module sends out an alarm prompt.
The above method is characterized in that: in step 302, the truss base is hoisted to a cavity surrounded by the first longitudinal support beam, the second longitudinal support beam, the first cantilever beam and the second cantilever beam, and the concrete process is as follows:
hoisting a truss base to a cavity surrounded by the first longitudinal support beam, the second longitudinal support beam, the first cantilever beam and the second cantilever beam, wherein the bottom of the truss base is lower than the bottoms of the first longitudinal support beam and the second longitudinal support beam; the horizontal part of location installation ear all extends to on first cantilever beam and the second cantilever beam, two be provided with the fine setting clearance between the vertical portion of location installation ear and the first cantilever beam side, two be provided with the fine setting clearance between the vertical portion of location installation ear and the second cantilever beam side, just vertical fine setting screw rod bottom butt is at first cantilever beam and second cantilever beam top in the vertical positioning part, and vertical silk braid lateral wall in the vertical positioning part of one side laminating of vertical positioning part is kept away from to location installation ear.
Compared with the prior art, the invention has the following advantages:
1. the invention has simple structure, reasonable design, simple and convenient integral installation and arrangement and lower input cost.
2. The supporting mechanism comprises the first longitudinal supporting beam, the second longitudinal supporting beam and the transverse supporting beam, so that the rigidity of the supporting structure is ensured, the construction safety is met, and the cantilever end is ensured to be deformed by the load of the truss base to meet the construction requirement.
3. The supporting mechanism is partially arranged on the poured bridge section and realizes anchoring with the poured bridge section through the anchoring mechanism, and the cantilever end of the supporting mechanism extends out of the poured bridge section so as to separate the supporting mechanism from the two ends to be poured, thereby reducing the interference between the truss base of the cantilever end of the supporting mechanism and the construction section and improving the construction efficiency and accuracy.
4. The positioning mechanism is provided with the transverse positioning component, the longitudinal positioning component and the vertical positioning component, so that the micro adjustment of the truss base along the transverse direction of the bridge, the micro adjustment of the truss base along the longitudinal direction of the bridge and the micro adjustment of the truss base along the vertical direction are realized through the transverse positioning component, the longitudinal positioning component and the vertical positioning component, and the accuracy of the pre-buried position of the truss base is improved.
5. The construction method for installing the truss base is simple in steps, convenient to implement and easy and convenient to operate, and the accuracy of the installation of the truss base is ensured.
6. The construction method for installing the truss base is simple and convenient to operate and good in using effect, firstly, the finish rolling deformed steel bar is embedded in advance, the steel truss base is installed, the cantilever structure is hoisted, secondly, anchoring of the truss base is carried out, then the truss base is installed, finally, fine adjustment of the truss base and pouring of a beam section area where the truss base is located are carried out, then the truss base is detached, and installation and construction of the truss base are completed.
In conclusion, the truss structure is reasonable in design and low in cost, the whole truss structure is convenient to mount and dismount and can be repeatedly used, manpower and material resources are reduced, longitudinal, transverse and vertical fine adjustment of the truss base is realized, the mounting precision of the truss base is improved, and the mounting quality and the construction period of the truss structure in the later period are improved.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic structural view of a truss base installation cantilever structure device of the present invention.
Fig. 2 is a view showing a state of use of the truss substructure installation cantilever structure apparatus of the present invention.
Fig. 3 is a right side view of fig. 2.
Fig. 4 is a flow chart of a construction method for installing the truss base according to the present invention.
Description of reference numerals:
1 — a first longitudinal support beam; 2-a second longitudinal support beam; 3-a transverse support beam;
4-an anchoring member; 4-1-anchoring the I-steel; 4-2-connecting plate;
4-3-accommodation clearance; 4-finish rolling the deformed steel bar; 4-5-locking nut;
5, a first cantilever beam; 6-a second cantilever beam; 7-a transverse positioning member;
7-1-transverse silk sleeve; 7-2-transverse fine adjustment screw; 8-longitudinal positioning means;
8-1-longitudinal thread sleeve; 8-2-longitudinal fine adjustment screw; 9-a vertical positioning component;
9-1-vertical thread sleeve; 9-2-vertical fine adjustment screw; 10, positioning and mounting lugs;
13-building a beam section in a cast-in-place mode; 14-a bottom mat plate; 15-a bridge section is poured;
16-truss base.
Detailed Description
The device for installing the cantilever structure on the truss base as shown in fig. 1 comprises a supporting mechanism arranged on a poured bridge section 15, a positioning mechanism arranged on the supporting mechanism and used for installing a truss base 16, an anchoring mechanism arranged between the supporting mechanism and the poured bridge section 15, and a detection module arranged at an overhanging end of the supporting mechanism extending out of the poured bridge section 15;
the supporting mechanism comprises a first longitudinal supporting beam 1 and a second longitudinal supporting beam 2 which are arranged in parallel, and a plurality of transverse supporting beams 3 arranged between the first longitudinal supporting beam 1 and the second longitudinal supporting beam 2;
a first cantilever beam 5 and a second cantilever beam 6 are arranged between cantilever ends of the first longitudinal support beam 1 and the second longitudinal support beam 2 extending out of the poured bridge section 15, and the first cantilever beam 5 and the second cantilever beam 6 are arranged in parallel;
the positioning mechanism comprises a transverse positioning component 7 arranged at the overhanging end of the first longitudinal support beam 1 and the second longitudinal support beam 2 extending out of the poured bridge section 15, a longitudinal positioning component 8 arranged on the first cantilever beam 5 and the second cantilever beam 6, a positioning mounting lug 10 extending to the first cantilever beam 5 and the second cantilever beam 6, and a vertical positioning component 9 arranged on the positioning mounting lug 10;
the detection module is a horizontal detection module arranged at the overhanging end of the first longitudinal support beam 1 and the second longitudinal support beam 2 extending out of the poured bridge section 15.
In this embodiment, the number of the transverse positioning members 7 is four, two transverse positioning members 7 are arranged at the overhanging end of the first longitudinal support beam 1, two transverse positioning members 7 are arranged at the overhanging end of the second longitudinal support beam 2, and the transverse positioning members 7 on the first longitudinal support beam 1 and the transverse positioning members 7 on the second longitudinal support beam 2 are symmetrically arranged;
the transverse positioning component 7 comprises a transverse screw sleeve 7-1 and a transverse fine adjustment screw 7-2 penetrating through the transverse screw sleeve 7-1, the transverse screw sleeve 7-1 is installed at the top of the overhanging end of the first longitudinal support beam 1 and the second longitudinal support beam 2 extending out of the poured bridge section 15, and the transverse fine adjustment screw 7-2 and the first longitudinal support beam 1 and the second longitudinal support beam 2 are vertically arranged in length.
In this embodiment, the number of the longitudinal positioning components 8 is four, two longitudinal positioning components 8 are arranged on the first cantilever beam 5, two longitudinal positioning components 8 are arranged on the second cantilever beam 6, and the longitudinal positioning components 8 on the first cantilever beam 5 and the longitudinal positioning components 8 on the second cantilever beam 6 are symmetrically arranged;
the longitudinal positioning component 8 comprises a longitudinal thread sleeve 8-1 and a longitudinal fine adjustment screw 8-2 penetrating through the longitudinal thread sleeve 8-1, the longitudinal thread sleeve 8-1 is installed at the top of the first cantilever beam 5 and the top of the second cantilever beam 6, and the longitudinal fine adjustment screw 8-2 and the first longitudinal support beam 1 are arranged in parallel with the second longitudinal support beam 2 in length.
In this embodiment, four positioning and mounting ears 10 are provided, each of the four positioning and mounting ears 10 includes a horizontal portion and a vertical portion arranged perpendicular to the horizontal portion, the horizontal portions of two positioning and mounting ears 10 extend to the first cantilever beam 5, and the horizontal portions of two positioning and mounting ears 10 extend to the second cantilever beam 6;
two be provided with the fine setting clearance between the vertical portion of location installation ear 10 and the first cantilever beam 5 side that is close to second cantilever beam 6, two be provided with the fine setting clearance between the vertical portion of location installation ear 10 and the second cantilever beam 6 side that is close to first cantilever beam 5.
In this embodiment, the number of the vertical positioning components 9 is four, four vertical positioning components 9 are all installed on four positioning installation lugs 10, each vertical positioning component 9 includes a vertical thread sleeve 9-1 and a vertical fine adjustment screw 9-2 penetrating through the vertical thread sleeve 9-1, the bottom end of the vertical fine adjustment screw 9-2 is abutted to the tops of the first cantilever beam 5 and the second cantilever beam 6, the vertical thread sleeve 9-1 is fixedly connected with the side surface of the horizontal portion in the positioning installation lug 10, and the vertical fine adjustment screw 9-2, the first cantilever beam 5 and the second cantilever beam 6, and the first vertical supporting beam 1 and the second vertical supporting beam 2 are all vertically arranged.
In this embodiment, the anchoring mechanism includes a plurality of anchoring members 4 arranged along the length direction of the first longitudinal support beam 1 and the second longitudinal support beam 2, and each of the anchoring members 4 includes an anchoring beam disposed on the top of the first longitudinal support beam 1 and the second longitudinal support beam 2 and finish-rolled deformed steel bars 4-4 inserted into the anchoring beam and the poured bridge segment 15.
In the embodiment, the anchoring beam comprises two anchoring I-beams 4-1 arranged back to back and a plurality of connecting plates 4-2 arranged at the tops of the anchoring I-beams 4-1, a containing gap 4-3 is formed between the two anchoring I-beams 4-1, the lower end of the finish-rolled deformed steel bar 4-4 is embedded in a poured bridge section 15, the upper end of the finish-rolled deformed steel bar 4-4 penetrates through the containing gap 4-3 and a steel base plate, and a locking nut 4-5 is arranged at the end part of the finish-rolled deformed steel bar 4-4 penetrating through the steel base plate.
In this embodiment, in actual use, a fine adjustment gap is provided between the horizontal portion of the positioning and mounting ear 10 and the top of the first cantilever beam 5 and the first cantilever beam 6.
In this embodiment, in actual use, the two longitudinal positioning members 8 on the first cantilever beam 5 are located between the two positioning mounting ears 10 on the first cantilever beam 5; the two longitudinal positioning members 8 on the second cantilever beam 6 are located between the two positioning mounting ears 10 on the second cantilever beam 6.
In this embodiment, in actual use, the first longitudinal supporting beam 1, the second longitudinal supporting beam 2, the transverse supporting beam 3, the first cantilever beam 5 and the second cantilever beam 6 can all be made of i-steel, and the device is simple in structure, easy in material acquisition, beneficial to processing and manufacturing, convenient to install and adjust, and capable of realizing turnover of field facilities.
In this embodiment, the device changes the loaded down with trivial details problem of prior art dismouting, and the operation personnel simple operation reduces hoisting equipment and relies on, improves work efficiency, and the practicality is stronger.
In the embodiment, the longitudinal positioning component 8 and the transverse positioning component 7 are arranged for pushing, so that the traditional fine adjustment process is simplified, and the longitudinal and transverse fine adjustment positioning can be realized without depending on hoisting equipment.
A construction method for installing a truss base as shown in fig. 2 to 4 includes the following steps:
step one, pre-burying finish rolling deformed steel bars and hoisting a cantilever structure installed on a steel truss base:
101, pre-burying a plurality of finish-rolled deformed steel bars 4-4 in the process of forming a poured bridge section 15; wherein a plurality of the finish-rolled deformed steel bars 4-4 are arranged along the longitudinal bridge direction of the poured bridge section 15;
102, mounting two bottom cushion plates 14 which are arranged in parallel at the top of a poured bridge section 15; wherein a gap is arranged between the two base plates 14;
103, hoisting the truss base to install the cantilever structure on the poured bridge section 15; the first longitudinal support beam 1 and the second longitudinal support beam 2 are respectively arranged on two bottom base plates 14, and overhanging ends of the first longitudinal support beam 1 and the second longitudinal support beam 2 extend out of a poured bridge section 15;
step two, mounting anchoring of a cantilever structure on the truss base:
the upper end of the finish-rolled deformed steel bar 4-4 penetrates through the accommodating gap 4-3 and the steel base plate, and a locking nut 4-5 is installed at the end part of the finish-rolled deformed steel bar 4-4 penetrating through the steel base plate; the top parts of the first longitudinal supporting beam 1 and the second longitudinal supporting beam 2 are welded with an anchoring beam, the anchoring beam comprises two anchoring I-beams 4-1 arranged back to back and a plurality of connecting plates 4-2 arranged at the top parts of the anchoring I-beams 4-1, an accommodating gap 4-3 is arranged between the two anchoring I-beams 4-1, and the steel base plate is positioned at the top part of the anchoring I-beam 4-1;
step three, mounting a truss base:
step 301, connecting a truss base 16 with four positioning mounting lugs 10; the truss base 16 is positioned between the four positioning and mounting lugs 10, and the vertical positioning components 9 are mounted on the four positioning and mounting lugs 10;
step 302, hoisting a truss base 16 to a cavity surrounded by the first longitudinal support beam 1, the second longitudinal support beam 2, the first cantilever beam 5 and the second cantilever beam 6;
step four, fine adjustment of the truss base:
step 401, operating two transverse positioning components 7 on a first longitudinal supporting beam 1 and two transverse positioning components 7 on a second longitudinal supporting beam 2, so that a transverse fine adjustment screw 7-2 in each transverse positioning component 7 pushes a truss base 16 to perform fine adjustment along the transverse bridge direction until the truss base 16 meets the design position of the transverse bridge direction;
step 402, operating two longitudinal positioning components 8 on the first cantilever beam 5 and two longitudinal positioning components 8 on the second cantilever beam 6 to enable a longitudinal fine adjustment screw 8-2 in the longitudinal positioning components 8 to push the truss base 16 to be finely adjusted along the longitudinal bridge direction until the truss base 16 meets the design position of the longitudinal bridge direction;
step 403, operating the four vertical positioning parts 9, wherein in the process of screwing the vertical fine adjustment screw 9-2, the bottom end of the vertical fine adjustment screw 9-2 is always abutted against the tops of the first cantilever beam 5 and the second cantilever beam 6, the vertical fine adjustment screw 9-2 rotates to drive the vertical thread sleeve 9-2 to move up and down, and the vertical thread sleeve 9-2 moves up and down to drive the truss base 16 to be finely adjusted vertically through the positioning mounting lug 10 until the truss base 16 meets the vertical design position of the beam end;
pouring a beam section area where the truss base is located:
erecting a template, and pouring concrete in a beam section area where the truss base is located until the tops of the cast-in-place beam section 13 and the cast-in-place bridge section 15 are flush, so that the truss base 16 is embedded in the cast-in-place beam section 13;
step six, dismantling the truss base installation cantilever structure device:
601, operating the truss base 16 to disconnect from the four positioning and mounting lugs 10, and removing the positioning and mounting lugs 10;
step 602, disassembling the locking nuts 4-5, and lifting the truss base to install the cantilever structure device until the truss base is separated from the cast-in-place beam building section and the cast bridge section 15, so as to complete the installation of the truss base.
In this embodiment, in the fine adjustment process of the truss base, the horizontal detection module detects the horizontal state of the overhanging end of the first longitudinal supporting beam 1 and the second longitudinal supporting beam 2 extending out of the poured bridge section 15, and when the overhanging end of the first longitudinal supporting beam 1 and the second longitudinal supporting beam 2 extending out of the poured bridge section 15 inclines, the horizontal detection module sends out an alarm prompt.
In this embodiment, in step 302, the truss base 16 is hoisted into the cavity surrounded by the first longitudinal support beam 1, the second longitudinal support beam 2, the first cantilever beam 5, and the second cantilever beam 6, and the specific process is as follows:
hoisting a truss base 16 to a cavity surrounded by the first longitudinal support beam 1, the second longitudinal support beam 2, the first cantilever beam 5 and the second cantilever beam 6, wherein the bottom of the truss base 16 is lower than the bottoms of the first longitudinal support beam 1 and the second longitudinal support beam 2; the four horizontal parts of the positioning and mounting lugs 10 extend to the first cantilever beam 5 and the second cantilever beam 6, fine adjustment gaps are formed between the vertical parts of the positioning and mounting lugs 10 and the side surface of the first cantilever beam 5, fine adjustment gaps are formed between the vertical parts of the positioning and mounting lugs 10 and the side surface of the second cantilever beam 5, the bottom ends of the vertical fine adjustment screws 9-2 in the vertical positioning part 9 are abutted to the tops of the first cantilever beam 5 and the second cantilever beam 6, and one side, far away from the vertical positioning part 9, of the positioning and mounting lugs 10 is attached to the side wall 8-2 of the longitudinal thread sleeve in the longitudinal positioning part 8.
In this embodiment, when in actual use, the fine tuning ranges of the longitudinal, the transverse and the vertical directions of the truss base are 0 cm-5 cm.
In conclusion, the truss structure is reasonable in design and low in cost, the whole truss structure is convenient to mount and dismount and can be repeatedly used, manpower and material resources are reduced, longitudinal, transverse and vertical fine adjustment of the truss base is realized, the mounting precision of the truss base is improved, and the mounting quality and the construction period of the truss structure in the later period are improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a truss pedestal mounting cantilever constructional device which characterized in that: the device comprises a supporting mechanism arranged on a poured bridge section (15), a positioning mechanism arranged on the supporting mechanism and used for installing a truss base (16), an anchoring mechanism arranged between the supporting mechanism and the poured bridge section (15), and a detection module arranged at an overhanging end of the supporting mechanism extending out of the poured bridge section (15);
the supporting mechanism comprises a first longitudinal supporting beam (1) and a second longitudinal supporting beam (2) which are arranged in parallel, and a plurality of transverse supporting beams (3) arranged between the first longitudinal supporting beam (1) and the second longitudinal supporting beam (2);
a first cantilever beam (5) and a second cantilever beam (6) are arranged between the cantilever ends of the first longitudinal support beam (1) and the second longitudinal support beam (2) extending out of the poured bridge section (15), and the first cantilever beam (5) and the second cantilever beam (6) are arranged in parallel;
the positioning mechanism comprises a transverse positioning component (7) arranged at the overhanging end of a first longitudinal supporting beam (1) and a second longitudinal supporting beam (2) extending out of a poured bridge section (15), a longitudinal positioning component (8) arranged on a first cantilever beam (5) and a second cantilever beam (6), a positioning and mounting lug (10) extending to the first cantilever beam (5) and the second cantilever beam (6), and a vertical positioning component (9) arranged on the positioning and mounting lug (10);
the detection module is a horizontal detection module arranged at the overhanging end of the first longitudinal support beam (1) and the second longitudinal support beam (2) extending out of the poured bridge section (15).
2. The truss substructure installation cantilever construction installation of claim 1, wherein: the number of the transverse positioning components (7) is four, two transverse positioning components (7) are arranged at the overhanging end of the first longitudinal supporting beam (1), two transverse positioning components (7) are arranged at the overhanging end of the second longitudinal supporting beam (2), and the transverse positioning components (7) on the first longitudinal supporting beam (1) and the transverse positioning components (7) on the second longitudinal supporting beam (2) are symmetrically arranged;
the transverse positioning component (7) comprises a transverse screw sleeve (7-1) and a transverse fine adjustment screw rod (7-2) penetrating through the transverse screw sleeve (7-1), the transverse screw sleeve (7-1) is installed at the top of an overhanging end of a first longitudinal supporting beam (1) and a second longitudinal supporting beam (2) extending out of a poured bridge section (15), and the transverse fine adjustment screw rod (7-2) and the lengths of the first longitudinal supporting beam (1) and the second longitudinal supporting beam (2) are vertically arranged.
3. The truss substructure installation cantilever construction installation of claim 1, wherein: the number of the longitudinal positioning components (8) is four, two longitudinal positioning components (8) are arranged on the first cantilever beam (5), two longitudinal positioning components (8) are arranged on the second cantilever beam (6), and the longitudinal positioning components (8) on the first cantilever beam (5) and the longitudinal positioning components (8) on the second cantilever beam (6) are symmetrically arranged;
the longitudinal positioning component (8) comprises a longitudinal thread sleeve (8-1) and a longitudinal fine adjustment screw rod (8-2) penetrating through the longitudinal thread sleeve (8-1), the longitudinal thread sleeve (8-1) is installed at the tops of the first cantilever beam (5) and the second cantilever beam (6), and the longitudinal fine adjustment screw rod (8-2) and the first longitudinal support beam (1) and the second longitudinal support beam (2) are arranged in parallel in length.
4. The truss substructure installation cantilever construction installation of claim 1, wherein: the number of the positioning and mounting ears (10) is four, the four positioning and mounting ears (10) comprise horizontal parts and vertical parts which are vertically arranged with the horizontal parts, the horizontal parts of the two positioning and mounting ears (10) extend to the first cantilever beam (5), and the horizontal parts of the two positioning and mounting ears (10) extend to the second cantilever beam (6);
two be provided with the fine setting clearance between the vertical portion of location installation ear (10) and first cantilever beam (5) are close to second cantilever beam (6), two be provided with the fine setting clearance between the vertical portion of location installation ear (10) and second cantilever beam (6) are close to first cantilever beam (5) side.
5. The truss substructure installation cantilever construction installation of claim 4, wherein: the number of the vertical positioning parts (9) is four, the vertical positioning parts (9) are all installed on the four positioning installation lugs (10), each vertical positioning part (9) comprises a vertical thread sleeve (9-1) and a vertical fine adjustment screw rod (9-2) penetrating through the vertical thread sleeve (9-1), the bottom end of each vertical fine adjustment screw rod (9-2) is abutted to the tops of the first cantilever beam (5) and the second cantilever beam (6), the vertical thread sleeves (9-1) are fixedly connected with the side faces of the horizontal portions in the positioning installation lugs (10), and the vertical fine adjustment screw rods (9-2), the first cantilever beam (5) and the second cantilever beam (6), and the first vertical supporting beam (1) and the second vertical supporting beam (2) are vertically arranged.
6. The truss substructure installation cantilever construction installation of claim 1, wherein: the anchoring mechanism comprises a plurality of anchoring parts (4) which are arranged along the length direction of a first longitudinal supporting beam (1) and a second longitudinal supporting beam (2), and each anchoring part (4) comprises an anchoring cross beam arranged at the tops of the first longitudinal supporting beam (1) and the second longitudinal supporting beam (2) and finish-rolled deformed steel bars (4-4) which are arranged in the anchoring cross beam and a poured bridge section (15) in a penetrating mode.
7. The truss substructure installation cantilever construction installation of claim 6, wherein: the anchoring beam comprises two anchoring I-shaped steels (4-1) arranged back to back and a plurality of connecting plates (4-2) arranged at the tops of the anchoring I-shaped steels (4-1), a containing gap (4-3) is arranged between the two anchoring I-shaped steels (4-1), the lower end of the finish rolling deformed steel bar (4-4) is embedded in a poured bridge section (15), the upper end of the finish rolling deformed steel bar (4-4) penetrates through the containing gap (4-3) and a steel base plate, and the end part of the steel base plate, which is penetrated by the finish rolling deformed steel bar (4-4), is provided with a locking nut (4-5).
8. A construction method for installing a truss mount by using the truss mount cantilever structure apparatus of claim 1, wherein the method comprises the steps of:
step one, pre-burying finish rolling deformed steel bars and hoisting a cantilever structure installed on a steel truss base:
101, pre-burying a plurality of finish-rolled deformed steel bars (4-4) in the process of forming a poured bridge section (15); wherein a plurality of the finish-rolled deformed steel bars (4-4) are arranged along the longitudinal bridge direction of the poured bridge section (15);
102, mounting two bottom cushion plates (14) which are arranged in parallel at the top of a poured bridge section (15); wherein a gap is arranged between the two bottom cushion plates (14);
103, hoisting the truss base to install the cantilever structure on the poured bridge section (15); the first longitudinal support beam (1) and the second longitudinal support beam (2) are respectively arranged on two bottom base plates (14), and overhanging ends of the first longitudinal support beam (1) and the second longitudinal support beam (2) extend out of a poured bridge section (15);
step two, mounting anchoring of a cantilever structure on the truss base:
the upper end of the finish-rolled deformed steel bar (4-4) penetrates through the accommodating gap (4-3) and the steel backing plate, and a locking nut (4-5) is installed at the end part of the finish-rolled deformed steel bar (4-4) penetrating through the steel backing plate; the top parts of the first longitudinal supporting beam (1) and the second longitudinal supporting beam (2) are welded with an anchoring beam, the anchoring beam comprises two anchoring I-shaped steels (4-1) arranged back to back and a plurality of connecting plates (4-2) arranged at the top parts of the anchoring I-shaped steels (4-1), an accommodating gap (4-3) is formed between the two anchoring I-shaped steels (4-1), and the steel backing plate is positioned at the top parts of the anchoring I-shaped steels (4-1);
step three, mounting a truss base:
301, connecting a truss base (16) with four positioning installation lugs (10); the truss base (16) is positioned among the four positioning and mounting lugs (10), and the four positioning and mounting lugs (10) are provided with vertical positioning components (9);
302, hoisting a truss base (16) to a cavity surrounded by the first longitudinal supporting beam (1), the second longitudinal supporting beam (2), the first cantilever beam (5) and the second cantilever beam (6);
step four, fine adjustment of the truss base:
step 401, operating two transverse positioning components (7) on a first longitudinal supporting beam (1) and two transverse positioning components (7) on a second longitudinal supporting beam (2) so that a transverse fine adjustment screw (7-2) in each transverse positioning component (7) pushes a truss base (16) to perform fine adjustment along the transverse bridge direction until the truss base (16) meets the design position of the transverse bridge direction;
step 402, operating two longitudinal positioning components (8) on a first cantilever beam (5) and two longitudinal positioning components (8) on a second cantilever beam (6) to enable a longitudinal fine adjustment screw (8-2) in the longitudinal positioning components (8) to push a truss base (16) to perform fine adjustment along the longitudinal bridge direction until the truss base (16) meets the design position of the longitudinal bridge direction;
step 403, operating four vertical positioning parts (9), wherein in the process of screwing a vertical fine adjustment screw (9-2), the bottom end of the vertical fine adjustment screw (9-2) is always abutted against the tops of a first cantilever beam (5) and a second cantilever beam (6), the vertical fine adjustment screw (9-2) rotates to drive a vertical thread sleeve (9-2) to move up and down, and the vertical thread sleeve (9-2) moves up and down to drive a truss base (16) to be finely adjusted vertically through a positioning mounting lug (10) until the truss base (16) meets the vertical design position of the beam end;
pouring a beam section area where the truss base is located:
erecting a template, and pouring concrete in a beam section area where a truss base is located until the top of a cast-in-place beam section (13) is flush with the top of a poured bridge section (15), so that the truss base (16) is embedded in the cast-in-place beam section (13);
step six, dismantling the truss base installation cantilever structure device:
601, operating the truss base (16) to be disconnected from the four positioning and mounting lugs (10), and removing the positioning and mounting lugs (10);
step 602, disassembling the locking nuts (4-5), and lifting the truss base to install the cantilever structure device until the truss base is separated from the cast-in-place beam building section and the cast bridge section (15), so that the installation of the truss base is completed.
9. The method of claim 8, wherein: in the fine adjustment process of the truss base, the horizontal detection module detects the horizontal state of the overhanging end of the poured bridge section (15) extending out of the first longitudinal supporting beam (1) and the second longitudinal supporting beam (2), and when the overhanging end of the poured bridge section (15) extending out of the first longitudinal supporting beam (1) and the second longitudinal supporting beam (2) inclines, the horizontal detection module sends out an alarm prompt.
10. The method of claim 8, wherein: in the step 302, a truss base (16) is hoisted to a cavity surrounded by the first longitudinal supporting beam (1), the second longitudinal supporting beam (2), the first cantilever beam (5) and the second cantilever beam (6), and the concrete process is as follows:
hoisting a truss base (16) to a cavity enclosed by the first longitudinal support beam (1), the second longitudinal support beam (2), the first cantilever beam (5) and the second cantilever beam (6), wherein the bottom of the truss base (16) is lower than the bottoms of the first longitudinal support beam (1) and the second longitudinal support beam (2); the four horizontal parts of the positioning and mounting lugs (10) extend to the first cantilever beam (5) and the second cantilever beam (6), fine adjustment gaps are formed between the vertical parts of the positioning and mounting lugs (10) and the side surfaces of the first cantilever beam (5), fine adjustment gaps are formed between the vertical parts of the positioning and mounting lugs (10) and the side surfaces of the second cantilever beam (5), the bottom ends of vertical fine adjustment screws (9-2) in the vertical positioning parts (9) are abutted to the tops of the first cantilever beam (5) and the second cantilever beam (6), and one side, away from the vertical positioning parts (9), of the positioning and mounting lugs (10 is attached to the side wall of a longitudinal thread sleeve (8-2) in the longitudinal positioning part (8).
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| CN202111513493.5A CN114000440A (en) | 2021-12-13 | 2021-12-13 | Truss base installation cantilever structure device and method |
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| CN202111513493.5A CN114000440A (en) | 2021-12-13 | 2021-12-13 | Truss base installation cantilever structure device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114633063A (en) * | 2022-03-30 | 2022-06-17 | 阿博机器人(昆山)有限公司 | LP wall component welding bench formwork |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101101209B1 (en) * | 2011-06-03 | 2012-01-04 | (주) 효성 | Cantilever of slab for bridge using precast supporter and the method thereof |
| CN102936879A (en) * | 2012-12-03 | 2013-02-20 | 中铁二十一局集团有限公司 | Suspended casting continuous pre-stress concrete-steel joist combined beam lower node mounting and debugging bracket |
| CN102995570A (en) * | 2012-12-12 | 2013-03-27 | 中铁上海工程局有限公司 | Stiffening steel truss lower node location die |
| KR101409185B1 (en) * | 2013-10-04 | 2014-06-19 | 주식회사 르네코 | Girder balance maintaining system used for concrete pouring process in manufacturing composite girder |
| CN205775865U (en) * | 2016-05-24 | 2016-12-07 | 西安公路研究院 | A kind of continuous rigid frame bridge closure segment pre-buried base of pushing tow top board |
| CN106403858A (en) * | 2016-08-30 | 2017-02-15 | 中建八局第三建设有限公司 | Super-altitude large cantilever steel platform end part deflection monitoring method |
| CN206541411U (en) * | 2017-03-20 | 2017-10-03 | 山东科技大学 | A kind of detection prior-warning device of cantilever pouring construction bridges Hanging Basket anchor system |
| CN111676845A (en) * | 2020-06-10 | 2020-09-18 | 贵州大通路桥工程建设有限公司 | Construction device for converting arch bridge from arch structure into cantilever structure |
| CN112482243A (en) * | 2020-12-08 | 2021-03-12 | 山东潍莱高速铁路有限公司 | Large cantilever steel truss transverse dragging construction fabricated deviation rectifying device and construction method |
| CN212866603U (en) * | 2020-07-03 | 2021-04-02 | 中铁建大桥工程局集团第三工程有限公司 | Recyclable steel truss embedded part installation foundation |
| JP3232364U (en) * | 2021-03-29 | 2021-06-10 | 中鉄建大橋工程局集団南方工程有限公司 | 3 Main truss type steel truss bridge multiple closures Cooperative fine-tuning push-pull equipment |
| CN216551624U (en) * | 2021-12-13 | 2022-05-17 | 中铁一局集团有限公司 | Truss pedestal mounting cantilever structure |
-
2021
- 2021-12-13 CN CN202111513493.5A patent/CN114000440A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101101209B1 (en) * | 2011-06-03 | 2012-01-04 | (주) 효성 | Cantilever of slab for bridge using precast supporter and the method thereof |
| CN102936879A (en) * | 2012-12-03 | 2013-02-20 | 中铁二十一局集团有限公司 | Suspended casting continuous pre-stress concrete-steel joist combined beam lower node mounting and debugging bracket |
| CN102995570A (en) * | 2012-12-12 | 2013-03-27 | 中铁上海工程局有限公司 | Stiffening steel truss lower node location die |
| KR101409185B1 (en) * | 2013-10-04 | 2014-06-19 | 주식회사 르네코 | Girder balance maintaining system used for concrete pouring process in manufacturing composite girder |
| CN205775865U (en) * | 2016-05-24 | 2016-12-07 | 西安公路研究院 | A kind of continuous rigid frame bridge closure segment pre-buried base of pushing tow top board |
| CN106403858A (en) * | 2016-08-30 | 2017-02-15 | 中建八局第三建设有限公司 | Super-altitude large cantilever steel platform end part deflection monitoring method |
| CN206541411U (en) * | 2017-03-20 | 2017-10-03 | 山东科技大学 | A kind of detection prior-warning device of cantilever pouring construction bridges Hanging Basket anchor system |
| CN111676845A (en) * | 2020-06-10 | 2020-09-18 | 贵州大通路桥工程建设有限公司 | Construction device for converting arch bridge from arch structure into cantilever structure |
| CN212866603U (en) * | 2020-07-03 | 2021-04-02 | 中铁建大桥工程局集团第三工程有限公司 | Recyclable steel truss embedded part installation foundation |
| CN112482243A (en) * | 2020-12-08 | 2021-03-12 | 山东潍莱高速铁路有限公司 | Large cantilever steel truss transverse dragging construction fabricated deviation rectifying device and construction method |
| JP3232364U (en) * | 2021-03-29 | 2021-06-10 | 中鉄建大橋工程局集団南方工程有限公司 | 3 Main truss type steel truss bridge multiple closures Cooperative fine-tuning push-pull equipment |
| CN216551624U (en) * | 2021-12-13 | 2022-05-17 | 中铁一局集团有限公司 | Truss pedestal mounting cantilever structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114633063A (en) * | 2022-03-30 | 2022-06-17 | 阿博机器人(昆山)有限公司 | LP wall component welding bench formwork |
| CN114633063B (en) * | 2022-03-30 | 2023-06-13 | 阿博机器人(昆山)有限公司 | LP wall member welding bench formwork |
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