CN113818353A - Construction method of arch beam consolidation section of rigid connection curved beam space arch bridge - Google Patents
Construction method of arch beam consolidation section of rigid connection curved beam space arch bridge Download PDFInfo
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- CN113818353A CN113818353A CN202111152183.5A CN202111152183A CN113818353A CN 113818353 A CN113818353 A CN 113818353A CN 202111152183 A CN202111152183 A CN 202111152183A CN 113818353 A CN113818353 A CN 113818353A
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- arch
- consolidation section
- section
- beam consolidation
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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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
- E01D4/00—Arch-type bridges
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- Engineering & Computer Science (AREA)
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a construction method of an arched beam consolidation section of a rigid connection curved beam space arch bridge, which comprises the following steps of 1) inserting and driving steel pipe piles under a riverbed to form a support, and arranging a distribution beam, a three-way regulator and a cushion block on the support; 2) determining the gravity center position of the arch beam consolidation section; 3) transporting the arch beam consolidation section to a construction site and then positioning; 4) placing the arch beam consolidation section on the cushion block along the positions of the limit mark and the alignment mark; 5) measuring the position parameters of the arch beam consolidation section by using a measuring instrument and a reflector, comparing the position parameters with theoretical values, solving an adjustment difference value, and adjusting the arch beam consolidation section by using a three-way adjuster; 6) and welding the joint. The instrument and the reflector are used for measuring position parameters, and the gravity center position is calculated according to the section shape and the curve line shape of the arch beam consolidation section, so that the effects that the arch beam consolidation section is stably lifted and the posture of the arch beam consolidation section conforms to the installation line shape are realized, the positioning and adjusting precision is high, the adjustment is simple and easy to operate, and the installation period is shortened.
Description
Technical Field
The invention relates to the technical field of bridge engineering construction, in particular to a construction method of an arch beam consolidation section of a rigid connection curved beam space arch bridge.
Background
With the gradual increase of domestic bridge engineering, when the installation construction of an arch beam consolidation section of a rigid connection curved beam space arch bridge is carried out, the center of gravity of the arch beam consolidation section is not in a symmetrical center line, the self-weight distribution of a steel beam section special-shaped state needs to be considered for the hoisting and erection of the arch beam consolidation section, and 4 degrees of freedom of x, y and z (namely longitudinal, transverse and vertical) and plane corners need to be considered for linear adjustment.
Disclosure of Invention
The invention aims to solve at least one technical problem in the prior art, and therefore, the invention provides a construction method of an arched girder consolidation section of a rigid connection curved girder space arch bridge, which comprises the following steps:
1) inserting and driving a steel pipe pile at a designed position of an arch beam consolidation section to be installed on a riverbed to form a support of the arch beam consolidation section, measuring to reach a designed elevation, arranging a distribution beam at the top of the support, arranging a three-way regulator on the distribution beam, arranging a cushion block on a vertical regulator of the three-way regulator, making a limit mark on the cushion block, making a limit mark at a joint of an arch rib of the arch beam consolidation section to be installed and an installed arch springing section, and welding a positioning supporting plate structure;
2) according to the cross section shape and the curve line shape of the arch beam consolidation section, calculating and determining the gravity center position of the arch beam consolidation section, arranging the lifting points of the arch beam consolidation section, calculating and determining the length of a lifting rope, ensuring that the gravity center of the arch beam consolidation section after being lifted is superposed with the central line of a lifting hook of a floating crane, and making alignment marks on a cushion block corresponding to the gravity center position and the lower end of an arch rib of the arch beam consolidation section;
3) transporting the arch beam consolidation section to a construction site, then anchoring and positioning, anchoring and positioning by a floating crane, connecting a lifting rope with a corresponding lifting point of the arch beam consolidation section, hanging the lifting rope on a lifting hook of the floating crane, and starting the floating crane to lift the arch beam consolidation section to a position which is at least one meter higher than the top surface of the support;
4) the floating crane is moved to slowly approach the bracket, when the arch beam consolidation section moves to the bridge position, the floating crane is stable, the floating crane slowly descends the lifting hook, and the lifting hook is placed on the cushion block along the positions of the limit mark and the alignment mark;
5) arranging a plurality of reflectors on the arch beam consolidation section, measuring a position parameter by using a high-precision RTK (carrier phase difference technology) system and a high-precision level gauge in cooperation with the reflectors, comparing the position parameter with a theoretical value, solving an adjustment difference value, and adjusting the arch beam consolidation section by using a three-way adjuster according to the adjustment difference value;
6) and after the adjustment is finished, fixing the joint of the arch rib of the arch beam consolidation section and the arch foot section, fixing the cushion block, and welding the joint according to the design requirement and the welding process.
The method has the advantages that the high-precision RTK and the high-precision level are combined with the reflecting mirror, various position parameters of the arch beam consolidation section are accurately measured, the center line of the lifting hook of the floating crane and the center of gravity of the arch beam consolidation section are used, then the center of gravity position of the arch beam consolidation section is calculated and determined according to the section shape and the curve line shape of the arch beam consolidation section, the effects that the arch beam consolidation section is stably lifted and the posture of the arch beam consolidation section is in line shape with installation are achieved, the positioning and adjusting precision is high, the adjustment is simple and easy to operate, and the installation period is shortened.
Preferably, in step 1), the three-way regulator is an intelligent hydraulic three-way regulator which controls a plurality of hydraulic jacks to regulate through a computer.
Preferably, in step 5), the position parameters of the arch beam consolidation section at least comprise the plane and the elevation of the steel beam of the arch beam consolidation section and the plane, the elevation and the inclination angle of the arch rib of the arch beam consolidation section.
Preferably, in the step 5), the adjustment mode of the arch beam consolidation section is to input the data of the adjustment difference into the control system of the computer, and the adjustment is performed synchronously in a time division manner.
Preferably, in step 2), the specification of the floating crane is 600 t.
Preferably, in step 5), the number of the reflecting mirrors is five, one of the reflecting mirrors is arranged at the top of the arch rib of the arch girder consolidation section, and the other four reflecting mirrors are arranged at the top points of the steel girders of the arch girder consolidation section.
Preferably, in step 6), the joint of the arch rib and the arch foot section of the arch girder consolidation segment is fixed by using a high-strength bolt flange.
Drawings
The invention is further described in the following with reference to the accompanying drawings, it is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from these drawings without inventive effort.
FIG. 1 is a schematic plan view of an arch bridge according to an embodiment of the invention;
FIG. 2 is a schematic three-dimensional bridge type of arch bridge main span according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a three-way regulator in accordance with an embodiment of the present invention;
FIG. 4 is a view in the direction A of FIG. 3;
FIG. 5 is a schematic illustration of the construction of the arch girder consolidation segment according to the embodiment of the present invention;
FIG. 6 is a top plan view of the construction of the arch girder consolidation segment according to the embodiment of the present invention;
FIG. 7 is a schematic plan view of a fixed section of an arched beam according to an embodiment of the present invention;
FIG. 8 is a schematic cross-sectional view of a cured section of an arched beam according to an embodiment of the present invention;
FIG. 9 is a schematic plan view of a mirror arrangement according to an embodiment of the present invention;
FIG. 10 is a schematic cross-sectional view of a mirror arrangement according to an embodiment of the present invention.
In the figure: the arch bridge 100, the arch base 110, the arch foot segment 120, the rock strata 130, the arch beam consolidation segment 200, the steel beam 210, the arch rib 220, the joint 230, the floating crane 300, the hook 310, the center line 320 of the hook, the lifting rope 330, the bracket 400, the steel pipe pile 410, the distribution beam 420, the three-way regulator 500, the vertical regulator 510, the longitudinal regulator 520, the transverse regulator 530, the spacer 540 and the reflector 600.
Detailed Description
The following detailed description of the present invention is given for the purpose of better understanding technical solutions of the present invention by those skilled in the art, and the present description is only exemplary and explanatory and should not be construed as limiting the scope of the present invention in any way.
It will be understood that the terms "upper", "lower", "left", "right", "front", "back", "bottom", "top", "inner", "outer", and the like, as used herein, refer to orientations or positional relationships illustrated in the drawings, which are used for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered limiting of the present invention.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
Referring to fig. 1 to 10, an arch bridge 100 according to an embodiment of the present invention is a rigid connection curved beam space arch bridge, the arch bridge 100 includes an arch base 110, an arch springing segment 120 is mounted on the arch base 110 before a construction of an arch beam fixing segment 200, the arch beam fixing segment 200 includes a steel beam 210 and an arch rib 220, and a lower end of the arch rib 220 is aligned and connected to an upper end of the arch springing segment 120.
The construction method of the arch beam consolidation section of the rigid connection curved beam space arch bridge of the embodiment of the invention comprises the following steps:
1) inserting and driving a steel pipe pile 410 at a design position of an arched beam consolidation section 200 to be installed on a riverbed to form a support 400 of the arched beam consolidation section 200, measuring to reach a designed elevation, laying a distribution beam 420 at the top of the support 400, laying a three-way regulator 500 on the distribution beam 420, arranging a cushion block 540 on a vertical regulator 510 of the three-way regulator 500, making a limit mark on the cushion block 540, making a limit mark on an arch rib 220 of the arched beam consolidation section 200 to be installed and a joint 230 of an installed arch springing segment 120, and welding a positioning supporting plate structure;
2) calculating and determining the gravity center position of the arch beam consolidation section 200 according to the center line 320 of the lifting hook of the floating crane 300 and the gravity center of the arch beam consolidation section 200, then according to the cross section shape and the curve line shape of the arch beam consolidation section 200, making alignment marks on a cushion block 540 corresponding to the gravity center position and the lower end of an arch rib 220 of the arch beam consolidation section 200, arranging the lifting point of the arch beam consolidation section 200, calculating and determining the length of a lifting rope 330, and ensuring that the gravity center of the arch beam consolidation section 200 after being lifted coincides with the center line 320 of the lifting hook of the floating crane 300;
3) transporting the arched beam consolidation section 200 to a construction site, then anchoring and positioning, anchoring the floating crane 300 in place, connecting the lifting rope 330 with a corresponding lifting point of the arched beam consolidation section 200, hanging the lifting rope 330 on a lifting hook 310 of the floating crane 300, and starting the floating crane 300 to lift the arched beam consolidation section 200 to a position at least one meter higher than the top surface of the support 400;
4) the floating crane 300 is moved to approach the bracket 400 slowly, when the arched girder consolidation section 200 is moved to the bridge position, the floating crane 300 is stable, the lifting hook 310 is slowly descended, and the floating crane 300 is placed on the cushion block 540 along the positions of the limit mark and the alignment mark;
5) the arched girder consolidation section 200 is provided with a plurality of reflectors 600, and a high-precision RTK (carrier phase differential) system and a high-precision level gauge are used in cooperation with the reflectors 600 to measure a position parameter, and the position parameter is compared with a theoretical value to find an adjustment difference, and the arched girder consolidation section 200 is adjusted using the three-way adjuster 500 according to the adjustment difference.
6) After the adjustment is finished, the joint 230 of the arch rib 220 of the fixed arch girder segment 200 and the arch springing segment 120 is fixed, the cushion block 540 is fixed, and the joint 230 is welded according to the design requirement and the welding process.
Preferably, in step 1), the three-way regulator 500 is an intelligent hydraulic three-way regulator, and a computer controls a plurality of hydraulic jacks to regulate the three-way regulator. It is further preferred that the three-way adjuster 500 has a vertical adjuster 510, a longitudinal adjuster 520 and a lateral adjuster 530, the top of the vertical adjuster 510 is provided with a spacer 540, the arched girder consolidation section 200 is placed on the spacer 540, and the spacer 540 is used for bearing and dispersing the weight of the arched girder consolidation section 200, so as to avoid the weight from being concentrated on the surface of the arched girder consolidation section 200 which is damaged by jacking when the vertical adjuster 510 adjusts. Preferably, the three-way regulator 500 is operated synchronously while being operated. Preferably, the material of the spacer 540 is steel.
Preferably, in step 2), the specification of the floating crane 300 is 600 t. The arched beam consolidation section 200 which needs to be hoisted is heavy, so that the specification of 600t is selected, and the hoisting requirement is met.
Preferably, in step 5), the position parameters of the arched girder consolidation section 200 at least include a plane and an elevation of the steel girder 210 of the arched girder consolidation section 200 and a plane, an elevation and an inclination of the arch rib 220 of the arched girder consolidation section 200. Preferably, the adjustment of the arched girder consolidation sections 200 is performed in a manner that the data of the adjustment difference is input into the control system of the computer, and the adjustment is performed in a time-sharing and synchronous manner.
Further preferably, in step 5), the number of the reflecting mirrors 600 is five, one of which is disposed on top of the arch rib 220 of the arched girder bonding section 200, and the other four of which are disposed at the top points of the steel beams 210 of the arched girder bonding section 200.
Preferably, in step 6), the joint 230 between the rib 220 of the arched girder consolidation segment 200 and the arch foot segment 120 is fixed by using a high-strength bolt flange. The joint 230 is initially fixed by using a high-strength bolt flange, so that the risk of dislocation in subsequent welding is reduced.
It should be understood that the arch bridge 100 mainly spans the whole body and the arch girder fixing section 200 has vertical, longitudinal and transverse directions as three coordinate axes of a spatial rectangular coordinate system, that is, the longitudinal direction is the X axis of the spatial rectangular coordinate system, the transverse direction is the Y axis of the spatial rectangular coordinate system, and the vertical direction is the Z axis of the spatial rectangular coordinate system.
In some other embodiments of the present invention, the support 400 is in the form of a support formed by combining a shallow-layer steel pipe pile and a concrete anchor pile, that is, a punched pile is inserted and punched below the rock surface 130 of the river bed, concrete is poured into the punched pile to form the concrete anchor pile, and the steel pipe pile 410 is inserted and sleeved with the concrete anchor pile, preferably, the diameter of the punched pile is 50 to 100 cm, and more preferably, the diameter of the punched pile is 70 cm. Preferably, the depth of the punched-out pile driven into the rock face 130 is 10 m and the depth of the poured concrete is 3 m. It is understood that the vertical direction of the river bed is the depth. The combination of the shallow covering layer steel pipe pile and the concrete anchor pile is adopted to solve the difficult problem of the construction of the shallow covering layer steel pile, enhance the overall stability of the bracket 400 and reduce the risk of structural deformation of the bracket 400 after the arch beam consolidation section 200 is loaded.
The principles and embodiments of the present invention have been described herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that there are no specific structures but a few objective structures due to the limited character expressions, and that those skilled in the art may make various improvements, decorations or changes without departing from the principle of the invention or may combine the above technical features in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (7)
1. A construction method of an arched girder consolidation section of a rigid connection curved girder space arch bridge is characterized by comprising the following steps:
1) inserting and driving a steel pipe pile at a designed position of an arch beam consolidation section to be installed on a riverbed to form a support of the arch beam consolidation section, measuring to reach a designed elevation, arranging a distribution beam at the top of the support, arranging a three-way regulator on the distribution beam, arranging a cushion block on a vertical regulator of the three-way regulator, making a limit mark on the cushion block, making a limit mark at a joint of an arch rib of the arch beam consolidation section to be installed and an installed arch springing section, and welding a positioning supporting plate structure;
2) according to the cross section shape and the curve line shape of the arch beam consolidation section, calculating and determining the gravity center position of the arch beam consolidation section, arranging the lifting points of the arch beam consolidation section, calculating and determining the length of a lifting rope, ensuring that the gravity center of the arch beam consolidation section after being lifted is superposed with the central line of a lifting hook of a floating crane, and making alignment marks on a cushion block corresponding to the gravity center position and the lower end of an arch rib of the arch beam consolidation section;
3) transporting the arch beam consolidation section to a construction site, then anchoring and positioning, anchoring and positioning by a floating crane, connecting a lifting rope with a corresponding lifting point of the arch beam consolidation section, hanging the lifting rope on a lifting hook of the floating crane, and starting the floating crane to lift the arch beam consolidation section to a position which is at least one meter higher than the top surface of the support;
4) the floating crane is moved to slowly approach the bracket, when the arch beam consolidation section moves to the bridge position, the floating crane is stable, the floating crane slowly descends the lifting hook, and the lifting hook is placed on the cushion block along the positions of the limit mark and the alignment mark;
5) arranging a plurality of reflectors on the arch beam consolidation section, measuring a position parameter by using a high-precision RTK (carrier phase difference technology) system and a high-precision level gauge in cooperation with the reflectors, comparing the position parameter with a theoretical value, solving an adjustment difference value, and adjusting the arch beam consolidation section by using a three-way adjuster according to the adjustment difference value;
6) and after the adjustment is finished, fixing the joint of the arch rib of the arch beam consolidation section and the arch foot section, fixing the cushion block, and welding the joint according to the design requirement and the welding process.
2. A method of constructing an arch girder consolidated end of a rigidly connected curved girder space arch bridge according to claim 1, wherein: in the step 1), the three-way regulator is an intelligent hydraulic three-way regulator which controls a plurality of hydraulic jacks to regulate through a computer.
3. A method of constructing an arch girder consolidated end of a rigidly connected curved girder space arch bridge according to claim 2, wherein: in the step 5), the position parameters of the arch beam consolidation section at least comprise the plane and the elevation of a steel beam of the arch beam consolidation section and the plane, the elevation and the inclination angle of an arch rib of the arch beam consolidation section.
4. A method of constructing an arch girder consolidated end of a rigidly connected curved girder space arch bridge according to claim 3, wherein: and 5) in the step 5), the adjustment mode of the arch beam consolidation section is to input the data of the adjustment difference value into a control system of a computer and perform adjustment synchronously in a grading manner.
5. A method of constructing an arch girder consolidated end of a rigidly connected curved girder space arch bridge according to claim 1, wherein: in the step 2), the specification of the adopted floating crane is 600 t.
6. A method of constructing an arch girder consolidated end of a rigidly connected curved girder space arch bridge according to claim 1, wherein: in the step 5), the number of the reflecting mirrors is five, one of the reflecting mirrors is arranged at the top of the arch rib of the arch girder consolidation section, and the other four reflecting mirrors are arranged at the top points of the steel beams of the arch girder consolidation section.
7. A method of constructing an arch girder consolidated end of a rigidly connected curved girder space arch bridge according to claim 1, wherein: and 6), fixing the joint of the arch rib of the arch girder consolidation section and the arch foot section by using a high-strength bolt flange.
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| CN202111152183.5A CN113818353A (en) | 2021-09-29 | 2021-09-29 | Construction method of arch beam consolidation section of rigid connection curved beam space arch bridge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111152183.5A CN113818353A (en) | 2021-09-29 | 2021-09-29 | Construction method of arch beam consolidation section of rigid connection curved beam space arch bridge |
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Citations (5)
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| JPH0274707A (en) * | 1988-09-09 | 1990-03-14 | Oriental Concrete Kk | Rising construction device of half-arch for arch bridge |
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2021
- 2021-09-29 CN CN202111152183.5A patent/CN113818353A/en active Pending
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| JPH0274707A (en) * | 1988-09-09 | 1990-03-14 | Oriental Concrete Kk | Rising construction device of half-arch for arch bridge |
| CN106012839A (en) * | 2016-05-16 | 2016-10-12 | 湖北工业大学 | Box girder pose adjusting method based on space coordinate conversion |
| CN108374340A (en) * | 2018-01-10 | 2018-08-07 | 中交第二航务工程局有限公司 | The method of longspan steel truss girder upper bracket assembly sliding roadway arch |
| CN109457615A (en) * | 2018-10-29 | 2019-03-12 | 合肥市公路桥梁工程有限责任公司 | A kind of construction method of installation of abnormity bowstring arch bridge arch ring |
| CN113023544A (en) * | 2021-04-10 | 2021-06-25 | 中铁广州工程局集团有限公司 | Dysmorphism manway view bridge arch girder section hoist and mount gesture adjusting device |
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