CN216640287U - Supporting device for mounting first-section steel anchor beam in cable-stayed bridge cable tower - Google Patents
Supporting device for mounting first-section steel anchor beam in cable-stayed bridge cable tower Download PDFInfo
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- CN216640287U CN216640287U CN202123249249.0U CN202123249249U CN216640287U CN 216640287 U CN216640287 U CN 216640287U CN 202123249249 U CN202123249249 U CN 202123249249U CN 216640287 U CN216640287 U CN 216640287U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 108
- 239000010959 steel Substances 0.000 title claims abstract description 108
- 238000002360 preparation method Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 2
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- 238000003466 welding Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Abstract
The utility model discloses a supporting device for mounting a first section of steel anchor beam in a cable-stayed bridge cable tower. The two bottom stressed main beams are correspondingly spanned between the two pairs of embedded steel plates one by one, and the two pairs of embedded steel plates are correspondingly arranged on the upper parts of the inner surfaces of the two side walls of the cable tower along the bridge direction; the pair of stressed brackets are arranged on the top surfaces of the two lateral bridge-direction side walls of the cable tower in a one-to-one correspondence manner; each stressed bracket comprises two short vertical rods pre-embedded on the lateral wall in the transverse bridge direction, a transverse rod fixed on the top surfaces of the two short vertical rods and a cross brace rod connected between the two short vertical rods; the bracket main body comprises two transverse brackets, two longitudinal connecting brackets and a top bracket; the two pairs of corbel placing main beams are arranged between two ends of the transverse rods of the pair of pre-embedded stress brackets and two ends of the middle transverse rods of the two transverse brackets in a one-to-one correspondence mode. The utility model ensures the installation precision of the first section of steel anchor beam.
Description
Technical Field
The utility model relates to a supporting device for mounting a first section of steel anchor beam in a cable-stayed bridge cable tower.
Background
The steel anchor beam is a component used for anchoring the stay cable on the tower column of the cable tower, and a plurality of sections of steel anchor beams are combined and spliced for use when in use. The steel anchor beam mainly bears the horizontal tension, the vertical component force and the eccentric bending moment of the stay cable. A single section of steel anchor beam is generally composed of a steel anchor beam body 10 and two steel corbel units. Each steel bracket unit comprises a steel bracket 11, a wall plate 12 positioned at the outer end of the steel bracket and an upper bearing plate 14 arranged on the top surface of the steel bracket 11, wherein two cable guide pipes 13 are arranged on the outer side surface of the wall plate 12. The steel anchor beam body 10 is provided on the top surface of the upper deck 14 of the two steel corbel units (see figure 1).
At present, a steel anchor beam is installed by adopting a method of separately installing a steel anchor beam body and bracket units, namely, two steel bracket units are successively hung on a tower column for assembly, and then the steel anchor beam body is hung on the tower column for installation. The installation and construction precision of the steel anchor beam and the steel bracket unit directly influences the installation and construction precision of the stay cable and the final control of the bridge cable force, so that the key of the main tower construction lies in the accurate control of the installation and construction of the steel anchor beam and the steel bracket unit. The installation accuracy of the first section of steel anchor beam is particularly important, and the method provides a reference basis for the installation of the subsequent section of steel anchor beam and provides a reference for the debugging of the next section of steel anchor beam. Therefore, a supporting device is needed to be arranged on the first section of steel anchor beam so as to guarantee the installation precision of the first section of steel anchor beam.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a supporting device for mounting a first section of steel anchor beam in a cable-stayed bridge cable tower, which has the advantages of reasonable structure, strong bearing capacity, convenience in assembly and disassembly, recycling and convenience in operation, and effectively ensures the mounting precision of the first section of steel anchor beam.
The purpose of the utility model is realized as follows: a supporting device for installing a first section of steel anchor beam in a cable-stayed bridge cable tower is installed in a cast hollow cable tower with a basically rectangular plane, and the width of the lateral wall of the cable tower in the transverse bridge direction is smaller than the length of the lateral wall of the cable tower in the forward bridge direction; the supporting device comprises two pairs of embedded steel plates, two bottom stressed main beams, a pair of stressed supports, a support main body and two pairs of bracket placing main beams; wherein,
the two pairs of embedded steel plates are correspondingly arranged on the upper parts of the inner surfaces of the two side walls of the cable tower along the bridge direction one by one;
the two bottom stressed main beams are correspondingly bridged between the two pairs of embedded steel plates one by one;
the pair of stressed brackets are arranged on the top surfaces of the two lateral bridge-direction side walls of the cable tower in a one-to-one correspondence manner; each stressed bracket comprises two short vertical rods pre-embedded on the lateral wall in the transverse bridge direction, a transverse rod fixed on the top surfaces of the two short vertical rods and a cross brace rod connected between the two short vertical rods;
the bracket main body comprises two transverse brackets, two longitudinal connecting brackets and a top bracket; wherein,
the two transverse frames are symmetrically fixed on the top surfaces of the middle parts of the two bottom stressed main beams; each transverse frame comprises a pair of long vertical rods, a middle cross rod and an upper cross rod, wherein the bottom ends of the long vertical rods are fixed on the bottom stressed main beam;
the two longitudinal connecting frames are correspondingly connected between the two pairs of long vertical rods one by one; each longitudinal connecting frame comprises a middle vertical rod, a bottom longitudinal connecting rod connected to the bottom of the middle vertical rod and a middle longitudinal connecting rod connected to the middle of the middle vertical rod;
two middle connecting rods are respectively connected between the bottoms, the middle parts and the tops of the middle upright rods of the two longitudinal connecting frames, and a pair of herringbone horizontal oblique connecting rods are respectively connected between the middle parts and the tops of the two longitudinal connecting frames;
the top frame is arranged at the top ends of the two transverse frames and the top ends of the two longitudinal connecting frames, and comprises two top longitudinal rods connected to the top surfaces of two ends of upper transverse rods of the two transverse frames and two top transverse rods which are in one-to-one correspondence and are bridged between two ends of the two top longitudinal rods;
the two pairs of corbel placing main beams are arranged between two ends of the transverse rods of the pair of pre-embedded stress brackets and two ends of the middle transverse rods of the two transverse brackets in a one-to-one correspondence mode.
The supporting device for mounting the first section of steel anchor beam in the cable-stayed bridge tower further comprises two scissor support rods which are connected between the pair of long vertical rods positioned below the middle cross rod and the pair of long vertical rods positioned above the middle cross rod in a one-to-one correspondence manner.
The supporting device for mounting the first steel anchor beam in the cable-stayed bridge tower further comprises two pairs of vertical oblique connecting rods which are in a herringbone shape and are connected to the top end of the middle vertical rod and the middle part of the middle vertical rod in a one-to-one correspondence manner.
The supporting device for mounting the first steel anchor beam in the cable-stayed bridge tower is characterized in that two ends of two top cross rods of the top frame are connected with the middle parts of two long vertical rods in a one-to-one correspondence manner through vertical inclined rods.
The supporting device for mounting the first section of steel anchor beam in the cable-stayed bridge tower is characterized in that each corbel placing main beam is composed of two I-shaped steels arranged at intervals, a middle limiting block is arranged between the two I-shaped steels, and outer limiting blocks are arranged on the outer sides of the two I-shaped steels.
The supporting device for mounting the first section of steel anchor beam in the cable-stayed bridge tower is characterized in that the upper parts of two short vertical rods of a pair of stressed brackets are provided with vertical fine tuning jacks; two ends of two jacking longitudinal rods of the top frame are provided with inclined fine tuning jacks; and longitudinal fine adjustment jacks are arranged on the top surfaces of the two pairs of corbels for placing the main beams.
The supporting device for installing the first section of steel anchor beam in the cable-stayed bridge cable tower has the following characteristics: the steel corbel and steel anchor beam assembly and disassembly device has the advantages of being reasonable in structure, strong in bearing capacity, convenient to assemble and disassemble, capable of being recycled, convenient to operate, and convenient to accurately position and assemble and adjust, greatly improving the assembly construction work efficiency of the steel corbels and the steel anchor beam body, effectively guaranteeing the installation accuracy of the first section of steel anchor beam, providing a reference standard for the installation of the subsequent section of steel anchor, and accordingly guaranteeing the stability of the whole bridge stay cable anchoring system.
Drawings
FIG. 1 is a perspective view of a steel anchor beam;
FIG. 2 is a longitudinal elevation view of the support assembly of the present invention for mounting a first section of steel anchor beam in a cable-stayed bridge pylon;
FIG. 3 is a view taken along line A-A of FIG. 2;
FIG. 4 is a view taken along line B-B of FIG. 2;
FIG. 5 is a view along line C-C of FIG. 2;
FIG. 6 is a schematic structural diagram of the supporting device of the utility model when the step 2 of installing the first section of steel anchor beam is carried out;
FIG. 7 is a schematic structural view of the first section of steel anchor beam installed by the support device of the present invention;
Detailed Description
The utility model will be further explained with reference to the drawings.
Referring to fig. 2 to 4, the supporting device for installing the first section of steel anchor beam in a cable-stayed bridge tower according to the present invention is installed in a hollow cable tower 100 which has a substantially rectangular plane and is poured, and the width of the lateral wall of the cable tower 10 in the bridge direction is smaller than the length of the lateral wall in the bridge direction.
The supporting device comprises two pairs of embedded steel plates 20, two bottom stressed main beams 30, a pair of stressed supports 4, a support main body and two pairs of bracket placing main beams 60.
The two pairs of embedded steel plates 20 are correspondingly arranged on the upper parts of the inner surfaces of the two side walls of the cable tower 100 along the bridge direction one by one; the embedded steel plate 20 is a rectangular steel plate with the thickness of 80mm multiplied by 60mm multiplied by 16 mm;
the two bottom stressed main beams 30 are correspondingly spanned between the two pairs of embedded steel plates 20 one by one; the bottom stressed girder 30 adopts H588 steel.
The pair of stressed brackets 4 are correspondingly arranged on the top surfaces of the two lateral bridge-direction side walls of the cable tower 100 one by one; each stressed bracket 4 comprises two short vertical rods 41 pre-embedded on the lateral wall in the transverse bridge direction, a transverse rod 42 fixed on the top surfaces of the two short vertical rods 41 and a scissor brace 43 connected between the two short vertical rods 41; the short vertical rods 41 and the transverse rods 42 are made of double I-shaped steel I25 a; the scissor brace 43 is made of L75 equilateral angle steel. The upper parts of the short vertical rods 41 of the pair of stressed brackets 4 are provided with vertical fine adjustment jacks 71.
The bracket main body comprises two transverse brackets, two longitudinal connecting brackets and a top bracket; wherein,
the two transverse frames are symmetrically fixed on the top surfaces of the middle parts of the two bottom stressed main beams 30; each transverse frame comprises a pair of long vertical rods 51 with the bottom ends fixed on the bottom stressed main beam 30, a middle cross rod 52a bridged between the middles of the pair of long vertical rods 51, an upper cross rod 52b bridged between the tops of the pair of long vertical rods 51 and two cross support rods 53 connected between the pair of long vertical rods 51 below the middle cross rod 52a and the pair of long vertical rods 51 above the middle cross rod 52a in a one-to-one correspondence manner; the long upright rod 51 is made of double-spliced I14I-shaped steel; each middle cross bar 52a is composed of two I14I-shaped steels which are respectively fixed on two side surfaces of the long vertical rod 51 through a stiffening plate 520 in a one-to-one correspondence manner; the upper cross bars 52b are all made of I14I-shaped steel; the scissor supporting rods 53 are made of L75 equilateral angle steel;
the two longitudinal connecting frames are connected between the two pairs of long vertical rods 51 in a one-to-one correspondence manner; each longitudinal connecting frame comprises a middle vertical rod 54, a bottom longitudinal connecting rod 55a connected to the bottom of the middle vertical rod 54, a middle longitudinal connecting rod 55b connected to the middle part of the middle vertical rod 54 and two pairs of vertical inclined connecting rods 56 which are in a herringbone shape and are connected to the top end of the middle vertical rod 54 and the middle part of the middle vertical rod 54 in a one-to-one correspondence manner; the bottom longitudinal connecting rod 55a and the middle longitudinal connecting rod 55b are both made of I14I-steel; the middle upright rod 54 and the two pairs of vertical syncline connecting rods 56 are all made of L75 equilateral angle steel;
the bottom, the middle and the top of the neutral rod 51 of the two longitudinal connecting frames are respectively connected with a middle connecting rod 50a, and the middle and the top of the two longitudinal connecting frames are respectively connected with a pair of herringbone horizontal inclined connecting rods 50 b; the three middle connecting rods 50a and the two pairs of horizontal oblique connecting rods 50b are all L75 equilateral angle steel;
the top frame is arranged at the top ends of the two transverse frames and the top ends of the two longitudinal connecting frames, and comprises two top longitudinal rods 57 connected to the top surfaces of two ends of the upper transverse rods 52b of the two transverse frames and two top transverse rods 58 which are in one-to-one correspondence and are bridged between two ends of the two top longitudinal rods 57; two ends of the two top cross rods 58 are connected with the middle parts of the two long vertical rods 51 in a one-to-one correspondence manner through vertical inclined rods 59; the top longitudinal rod 57, the top transverse rod 58 and the vertical inclined rod 59 are all made of I14I-shaped steel. Two ends of the two jacking longitudinal rods 57 are provided with inclined fine adjustment jacks 72;
the two pairs of corbel placing main beams 60 are correspondingly arranged between two ends of the transverse rods 42 of the pair of pre-embedded stressed brackets 4 and two ends of the middle transverse rods 52a of the two transverse brackets; each corbel placing main beam 60 is composed of two I-shaped steels I25a arranged at intervals, a middle limiting block 61 is arranged between the two I-shaped steels I25a, and outer limiting blocks 62 are arranged on the outer sides of the two I-shaped steels I25 a. Longitudinal fine adjustment jacks 73 are mounted on the top surfaces of the two pairs of corbel rest main beams 60.
Referring to fig. 6 and 7 in combination with fig. 1, the supporting device for installing the first section of steel anchor beam in the cable-stayed bridge tower according to the present invention includes the following steps when installing the first section of steel anchor beam 1:
1. firstly, longitudinal limiting and transverse limiting are carried out on two pairs of corbel placing main beams 60, vertical non-limiting is carried out, vertical jacks are installed on short vertical rods 41 of pre-embedded stress supports 4 to finely adjust elevation, a simple supporting beam placing mode is adopted before positioning is completed, and welding is firm after positioning is completed.
2. Before the steel corbel 11 is hoisted, drawing lines at corresponding positions of the corbel placing main beam 60 and the corbel to facilitate the positioning of the steel corbel 11, welding two transverse limiting blocks 120 at the bottom of a wall plate 12 of the steel corbel 11, wherein the width of each transverse limiting block 120 is matched with the width of a middle limiting block 61 between two I25a I-shaped steels forming one corbel placing main beam 60;
3. hanging a steel corbel 11 on a pair of corbel placing main beams 60 of the supporting device and embedding a transverse limiting block 120 between two I-shaped steel I25a of the corbel placing main beams 60, so that a transverse bridge position of the steel corbel 11 is defined;
4. the longitudinal bridging position of the steel corbel 11 is adjusted by a longitudinal fine adjustment jack 73 mounted on the top surface of the corbel rest main beam 60;
5. firstly, repeating the steps 1-4 to install another steel bracket 11, and then temporarily fixing the two steel brackets 11 on the supporting device; at the moment, the top frame of the supporting device is basically flush with the bottom surfaces of the upper bearing plates 14 of the two steel corbels 11;
6. the inclination of the two steel corbels 11 is adjusted by the inclination fine adjustment jacks 72 arranged at the two ends of the two top longitudinal rods 57 of the top frame;
7. the contact position of the steel anchor beam body 10 on the upper bearing plate 14 of the steel corbel 11 is drawn, the steel anchor beam body 10 is hoisted and positioned, and then the steel anchor beam body 10 is connected with the upper bearing plates 14 of the two steel corbels 11.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (6)
1. A supporting device for installing a first section of steel anchor beam in a cable-stayed bridge cable tower is installed in a cast hollow cable tower with a basically rectangular plane, and the width of the lateral wall of the cable tower in the transverse bridge direction is smaller than the length of the lateral wall of the cable tower in the forward bridge direction; the supporting device comprises two pairs of embedded steel plates, two bottom stressed main beams, a pair of stressed supports, a support main body and two pairs of bracket placing main beams; it is characterized in that the preparation method is characterized in that,
the two pairs of embedded steel plates are correspondingly arranged on the upper parts of the inner surfaces of the two sides of the cable tower along the bridge direction one by one;
the two bottom stressed main beams are correspondingly bridged between the two pairs of embedded steel plates one by one;
the pair of stressed brackets are arranged on the top surfaces of the two lateral bridge-direction side walls of the cable tower in a one-to-one correspondence manner; each stressed bracket comprises two short vertical rods pre-embedded on the lateral wall in the transverse bridge direction, a transverse rod fixed on the top surfaces of the two short vertical rods and a cross brace rod connected between the two short vertical rods;
the bracket main body comprises two transverse brackets, two longitudinal connecting brackets and a top bracket; wherein,
the two transverse frames are symmetrically fixed on the top surfaces of the middle parts of the two bottom stressed main beams; each transverse frame comprises a pair of long vertical rods, a middle cross rod and an upper cross rod, wherein the bottom ends of the long vertical rods are fixed on the bottom stressed main beam;
the two longitudinal connecting frames are correspondingly connected between the two pairs of long vertical rods one by one; each longitudinal connecting frame comprises a middle vertical rod, a bottom longitudinal connecting rod connected to the bottom of the middle vertical rod and a middle longitudinal connecting rod connected to the middle of the middle vertical rod;
two middle connecting rods are respectively connected between the bottoms, the middle parts and the tops of the middle upright rods of the two longitudinal connecting frames, and a pair of herringbone horizontal oblique connecting rods are respectively connected between the middle parts and the tops of the two longitudinal connecting frames;
the top frame is arranged at the top ends of the two transverse frames and the top ends of the two longitudinal connecting frames, and comprises two top longitudinal rods connected to the top surfaces of two ends of upper transverse rods of the two transverse frames and two top transverse rods which are in one-to-one correspondence and are bridged between two ends of the two top longitudinal rods;
the two pairs of corbel placing main beams are arranged between two ends of the transverse rods of the pair of pre-embedded stress brackets and two ends of the middle transverse rods of the two transverse brackets in a one-to-one correspondence mode.
2. A bracing arrangement for installing a first section of steel anchor beam in a cable-stayed bridge pylon according to claim 1, wherein each transverse frame further comprises two scissor braces connected one-to-one between a pair of long uprights located below the center cross bar and between a pair of long uprights located above the center cross bar.
3. The supporting device for installing the first section of steel anchor beam in a cable-stayed bridge tower according to claim 1, wherein each longitudinal connecting frame further comprises two pairs of vertical oblique connecting rods which are in a herringbone shape and are connected to the top ends of the middle vertical rods and the middle parts of the middle vertical rods in a one-to-one correspondence manner.
4. The supporting device for installing the first-section steel anchor beam in the cable-stayed bridge tower according to claim 1, wherein two ends of two top cross rods of the top frame are connected with a vertical inclined rod between the middle parts of two long vertical rods in a one-to-one correspondence manner.
5. The supporting device for installing the first section of steel anchor beam in the cable-stayed bridge cable tower according to claim 1, wherein each corbel placing main beam is composed of two I-shaped steels arranged at intervals, a middle limiting block is arranged between the two I-shaped steels, and outer limiting blocks are arranged on the outer sides of the two I-shaped steels.
6. The supporting device for installing the first section of steel anchor beam in the cable-stayed bridge cable tower according to claim 1, wherein vertical fine-adjustment jacks are installed at the upper parts of two short vertical rods of a pair of stressed brackets; two ends of two jacking longitudinal rods of the top frame are provided with inclined fine tuning jacks; and longitudinal fine adjustment jacks are arranged on the top surfaces of the two pairs of corbels for placing the main beams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123249249.0U CN216640287U (en) | 2021-12-22 | 2021-12-22 | Supporting device for mounting first-section steel anchor beam in cable-stayed bridge cable tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123249249.0U CN216640287U (en) | 2021-12-22 | 2021-12-22 | Supporting device for mounting first-section steel anchor beam in cable-stayed bridge cable tower |
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| Publication Number | Publication Date |
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| CN216640287U true CN216640287U (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123249249.0U Active CN216640287U (en) | 2021-12-22 | 2021-12-22 | Supporting device for mounting first-section steel anchor beam in cable-stayed bridge cable tower |
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