CN114214955B - Method for erecting bridge-crossing steel plate girder - Google Patents
Method for erecting bridge-crossing steel plate girder Download PDFInfo
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- CN114214955B CN114214955B CN202111631114.2A CN202111631114A CN114214955B CN 114214955 B CN114214955 B CN 114214955B CN 202111631114 A CN202111631114 A CN 202111631114A CN 114214955 B CN114214955 B CN 114214955B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 213
- 239000010959 steel Substances 0.000 title claims abstract description 213
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000010276 construction Methods 0.000 claims abstract description 61
- 238000004080 punching Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 27
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
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Abstract
The invention discloses a method for erecting a cross-bridge steel plate girder. The erection method is suitable for the technical field of manufacturing of steel structure bridges, wherein a plurality of steel plate beams are respectively placed below two buttresses forming a hole; installing construction hanging cages at two ends of each steel plate girder; sequentially hoisting a plurality of steel plate beams, respectively placing two ends of the plurality of steel plate beams at the tops of two buttresses, and connecting the ends of the steel plate beams at the tops of the corresponding buttresses by utilizing a construction hanging cage; and repeating the steps to sequentially finish the erection of the steel plate beams with the rest holes. The invention adopts the steel plate girder with a sectional structure, and the two ends of the steel plate girder are placed on the corresponding buttresses through a plurality of hanging steel plate girders and are connected and installed by matching with the construction hanging cage, thereby realizing the erection of the steel plate girder on the old bridge in a certain overhead construction line and having good practicability, novelty and creativity.
Description
Technical Field
The invention belongs to the technical field of manufacturing of steel structure bridges, and particularly relates to a method for erecting a cross-bridge steel plate girder.
Background
The length of a certain overhead main line is 21km, steel plate girders are erected on the original primary highway, and various construction conditions exist on the construction route, so that the construction conditions are severely limited, such as high-voltage line under construction, road crossing construction and original old bridge erection operation. The old bridge is erected, the crane needs to be positioned on the old bridge, the service time of the old bridge is long, the bearing capacity is limited, the requirement on the position of the crane is high, the condition that the large crane is directly lifted up can not be met, and the width of the old bridge is limited, if the steel plate girder is erected by adopting the bracket, the transportation vehicle and the crane can not pass through.
Disclosure of Invention
The invention aims to at least solve the technical problem of erecting a steel plate girder on an old bridge in an overhead construction line to a certain extent. Therefore, the invention provides a method for erecting a cross-bridge steel plate girder.
The technical scheme of the invention is as follows:
the invention provides a method for erecting a bridge-crossing steel plate girder, which comprises the following steps:
respectively placing a plurality of steel plate beams below two buttresses forming a hole;
installing construction hanging cages at two ends of each steel plate girder;
sequentially hoisting a plurality of steel plate beams, respectively placing two ends of the plurality of steel plate beams at the tops of two buttresses, and connecting the ends of the steel plate beams at the tops of the corresponding buttresses by utilizing the construction hanging cage;
repeating the steps, and sequentially completing the erection of the steel plate beams of the rest holes.
Further, hoist and mount the steel sheet roof beam specifically includes:
and hoisting the ends of the steel plate beams by using two cranes at the buttresses respectively until the two ends of the steel plate beams are respectively placed at the tops of the two buttresses.
Further, each station stress landing leg of each crane is not more than 4m away from the central line of the old bridge pier.
Further, only one crane can be arranged between two adjacent piers of the old bridge.
Further, by using the construction hanging cage, the end portion of the steel plate beam is connected to the top of the corresponding buttress, specifically including:
and the installer respectively enters the construction hanging cages at the two ends of the steel plate beam for construction, so that the end parts of the steel plate beam are connected with the corresponding buttresses and the end parts of the adjacent steel plate beams.
Further, the end of the steel plate beam is connected with the end of the adjacent steel plate beam through bolts.
Further, the pre-tightening torque of the bolt connection reaches 80% of the design torque after primary screwing and secondary screwing, the positioning punching nails are not less than 20%, and the number of punching nails and temporary bolts is not less than 40% of the number of holes.
Further, the erection method further includes:
when the steel plate beams adjacent to the holes are erected, the steel plate beam of the previous hole positioned on the same straight line stretches into the next hole.
Further, the erection method further includes:
the steel plate beam is split into a first beam body and a second beam body and is placed below the corresponding hole;
the construction hanging cage is arranged at one end of the first beam body;
lifting two ends of the first beam body, so that one end of the first beam body is placed at the top of one corresponding buttress of the hole;
connecting one end of the first beam body to the top of one buttress corresponding to the hole by utilizing the construction hanging cage;
the construction hanging cages are arranged at the two ends of the second beam body;
lifting two ends of the second beam body, enabling one end of the second beam body to be placed at the other end of the first beam body, and enabling the other end of the second beam body to be placed at the top of the other buttress corresponding to the hole;
and connecting the other end of the first beam body with one end of the second beam body by using the construction hanging cage, and connecting the other end of the second beam body with the top of the other buttress corresponding to the hole.
Further, a diagonal bracing piece is arranged between the steel plate beam and the buttress.
The embodiment of the invention has at least the following beneficial effects:
the method for erecting the bridge-crossing steel plate girder adopts the steel plate girder with a sectional structure, two ends of the steel plate girder are placed on corresponding buttresses through a plurality of hanging steel plate girders, and the steel plate girders are connected and installed by matching with a construction hanging cage, so that the steel plate girder is erected on an old bridge in a certain overhead construction line, and the method has good practicability, novelty and creativity.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the installation of a first steel plate girder of embodiment 1;
FIG. 2 is a schematic view of the installation of a second steel plate girder of example 1;
FIG. 3 is a schematic view of the installation of a third steel plate girder of example 1;
FIG. 4 is a schematic view of the installation of a fourth steel plate girder of example 1;
FIG. 5 is a schematic view of the installation of a fifth steel plate girder of example 1;
fig. 6 is a schematic view of the installation of a sixth steel plate girder of embodiment 1.
Reference numerals:
1-a first buttress; 2-a second buttress; 3-a third buttress; 4-fourth buttress; 5-a fifth buttress; 6-a first steel plate girder; 7-a second steel plate girder; 8-a third steel plate girder; 9-fourth steel plate girder; 10-a fifth steel plate girder; 11-sixth steel plate girder; 12-a first crane; 13-a second crane; 14-a third crane; 15-old bridge.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
The invention is described below with reference to specific embodiments in conjunction with the accompanying drawings:
the method for erecting the bridge-crossing steel plate girder provided by the embodiment of the invention comprises the following steps:
s1: respectively placing a plurality of steel plate beams below two buttresses forming a hole;
s2: installing construction hanging cages at two ends of each steel plate girder;
s3: sequentially hoisting a plurality of steel plate beams, respectively placing two ends of the plurality of steel plate beams at the tops of two buttresses, and connecting the ends of the steel plate beams at the tops of the corresponding buttresses by utilizing a construction hanging cage;
s4: and repeating the steps to sequentially finish the erection of the steel plate beams with the rest holes.
The erection method in the embodiment of the application adopts the steel plate beams with sectional structures, two ends of each steel plate beam are placed on the corresponding buttresses through a plurality of hoisting steel plate beams, and the steel plate beams are connected and installed by being matched with the construction hanging cage, so that the steel plate beams are erected on an old bridge in a certain overhead construction line.
Further, hoisting the steel plate beam specifically comprises using two cranes at the buttress to hoist the ends of the steel plate beam respectively, and placing the two ends of the steel plate beam at the tops of the two buttresses respectively so as to hoist the steel plate beam through the cranes.
Furthermore, the distance between each station stressed supporting leg of each crane and the central line of the bridge pier of the old bridge is not more than 4m, and only one crane can be arranged between two adjacent bridge piers of the old bridge.
Further, the construction hanging cage is utilized to connect the end parts of the steel plate beams at the tops of the corresponding buttresses, and the construction hanging cage is specifically used for enabling installation staff to enter the construction hanging cage at the two ends of the steel plate beams respectively, so that the end parts of the steel plate beams are connected with the corresponding buttresses and the end parts of the adjacent steel plate beams, and the steel beam is installed in a manual installation mode.
Further, the end parts of the steel plate beams are connected with the end parts of the adjacent steel plate beams through bolts, the pretightening torque of the bolt connection reaches 80% of the design torque after primary screwing and secondary screwing, the positioning punching nails are not less than 20%, the number of the punching nails and the number of the temporary bolts are not less than 40%, so that the installation effect is ensured, and the installation reliability and stability are improved.
Further, when the steel plate beams of the adjacent holes are erected, the steel plate beams of the previous hole positioned on the same straight line extend into the next hole, so that the interfaces of the two adjacent steel plate beams are prevented from being positioned at the top of the buttress, and the installation stability of the steel plate beams is improved.
Further, the erection method further comprises: splitting the steel plate beam into a first beam body and a second beam body, and placing the first beam body and the second beam body below the corresponding holes; a construction hanging cage is arranged at one end of the first beam body; lifting two ends of the first beam body, so that one end of the first beam body is placed at the top of one buttress of the corresponding hole; connecting one end of the first beam body to the top of one buttress of the corresponding hole by using a construction hanging cage; mounting construction hanging cages at two ends of the second beam body; lifting two ends of the second beam body, enabling one end of the second beam body to be placed at the other end of the first beam body, and enabling the other end of the second beam body to be placed at the top of the other buttress of the corresponding hole; and the construction hanging cage is utilized to connect the other end of the first beam body with one end of the second beam body, and the other end of the second beam body is connected to the top of the other buttress of the corresponding hole. When the distance between two adjacent buttresses is large, the method is adopted for installation, so that the installation effect is ensured, and the safety is improved.
Further, a diagonal bracing piece is arranged between the steel plate beam and the buttress so as to ensure the installation stability of the steel plate beam.
Further, the steel plate beam is installed by using a total station for measurement and positioning, so that the accuracy of installation is ensured.
Example 1
Fig. 1 to fig. 6 are schematic views of a method for erecting a bridge steel plate girder in embodiment 1, and in this embodiment, in connection with fig. 1, a bridge of a certain overhead main line is erected on an old bridge 15, 5 steel plate girders are required to be installed on a bridge deck of the old bridge 15 in total, in order, a first hole with a span of 35m is arranged between a first buttress 1 and a second buttress 2, a second hole with a span of 60m is arranged between the second buttress 2 and a third buttress 3, a third hole with a span of 60m is arranged between the third buttress 3 and a fourth buttress 4, a fourth hole with a span of 35m is arranged between the fourth buttress 4 and a fifth buttress 5, 8 steel plate girders are required to be erected in parallel at intervals, a first steel plate girder 6 with a length of 39m is required to be installed on the first hole, a second steel plate girder 7 with a length of 37.2m and a third plate girder 8 with a length of 22.8m are required to be installed on the second hole, a fourth steel plate girder 8 with a length of 37.2m is required to be installed on the fourth steel plate girder 8 with a length of 37.8 m, and a fourth steel plate girder 8 with a length of 11 m is required to be installed on the fourth steel plate girder with a length of 37.8 m.
Referring to fig. 1, the method for providing a steel plate girder across a bridge comprises:
erecting a first steel plate girder 6: in combination with fig. 1, eight first steel plate beams 6 are respectively placed below the corresponding installation positions of the first holes, construction hanging cages are respectively hung at the installation positions of the two ends of the first steel plate beams 6, a first crane 12 is arranged at the first support pier 1, a second crane 13 is arranged at the second support pier 2, the first crane 12 and the second crane 13 respectively lift one end and the other end of one first steel plate beam 6, one end of one first steel plate beam 6 is placed at the installation position of the first support pier 1, the other end of one first steel plate beam 6 is placed at the installation position of the second support pier 2, installation personnel respectively enter the construction hanging cages at the first support pier 1 and the second support pier 2 to install one first steel plate beam 6, one end of one first steel plate beam 6 is installed on the first support pier 1 and connected with an adjacently connected structure installed on the first support pier 1, the other end of one first steel plate beam 6 is installed on the second support pier 2 and extends out of the second support pier 2, and the first steel plate beam 6 is erected in parallel to the first holes, and the first steel plate beam 6 is erected in the first holes in parallel;
erecting a second steel plate beam 7 and a third steel plate beam 8: with reference to fig. 2 and 3, eight second steel plate beams 7 and eight third steel plate beams 8 are respectively placed below the corresponding installation positions of the second holes, a construction hanging cage is hung at the connection position of the other end of the first steel plate beam 6 and one end of the second steel plate beam 7, a first crane 12 is arranged at the second buttress 2, a second crane 13 is arranged between the second buttress 2 and the third buttress 3, the first crane 12 and the second crane 13 respectively lift one end and the other end of one second steel plate beam 7, one end of one second steel plate beam 7 is placed at the other end of one first steel plate beam 6, an installer enters the construction hanging cage hung at the position, one end of one second steel plate beam 7 and the other end of one first steel plate beam 6 are installed together, the lifting of the second crane 13 to the other end of the second steel plate beam 7 is maintained, the first crane 12 is arranged between the second buttress 2 and the third buttress 3, the third crane 14 is arranged at the third buttress 3, construction hanging cages are respectively hung at the connecting position of the other end of the second steel plate beam 7 and one end of the third steel plate beam 8 and at the third buttress 3, the first crane 12 and the third crane 14 respectively hang one end and the other end of one third steel plate beam 8, one end of one third steel plate beam 8 is placed at the other end of one second steel plate beam 7, a construction hanging cage for an installer to enter the position is arranged at the other end of one third steel plate beam 8 and the other end of one second steel plate beam 7, meanwhile, the other end of one third steel plate beam 8 is placed at the installation position on the third buttress 3, the installer enters the construction hanging cage at the position, the other end of one third steel plate beam 8 is arranged on the third buttress 3 and extends into the third hole, thus, the erection of a second steel plate beam 7 and a third steel plate beam 8 is completed, and the rest seven second steel plate beams 7 and seven third steel plate beams 8 are erected on the second holes at intervals in parallel according to the steps;
erecting a fourth steel plate beam 9 and a fifth steel plate beam 10: referring to fig. 4 and 5, eight fourth steel plate beams 9 and eight fifth steel plate beams 10 are respectively placed under the corresponding installation positions of the third holes, a construction hanging cage is hung at the connection of the other end of the third steel plate beam 8 and one end of the fourth steel plate beam 9, a first crane 12 is arranged at the third buttress 3, a second crane 13 is arranged between the third buttress 3 and the fourth buttress 4, the first crane 12 and the second crane 13 respectively lift one end and the other end of one fourth steel plate beam 9, one end of one fourth steel plate beam 9 is placed at the other end of one third steel plate beam 8, an installer enters the construction hanging cage hung at the position, one end of one fourth steel plate beam 9 and the other end of one third steel plate beam 8 are installed together, the lifting of the second crane 13 to the other end of the fourth steel plate beam 9 is maintained, the first crane 12 is arranged between the third buttress 3 and the fourth buttress 4, the third crane 14 is arranged at the fourth buttress 4, construction hanging cages are respectively hung at the connecting position of the other end of the fifth steel plate beam 10 and one end of the fourth steel plate beam 9 and at the fourth buttress 4, the first crane 12 and the third crane 14 respectively hang one end and the other end of one fifth steel plate beam 10, one end of one fifth steel plate beam 10 is placed at the other end of one fourth steel plate beam 9, a construction hanging cage for an installer to enter the position is arranged at one end of one fifth steel plate beam 10 and the other end of one fourth steel plate beam 9, meanwhile, the other end of one fifth steel plate beam 10 is placed at the installation position on the fourth buttress 4, the installer enters the construction hanging cage at the position, the other end of one fifth steel plate beam 10 is arranged on the fourth buttress 4 and extends out into the fourth hole, thus, the erection of a fourth steel plate beam 9 and a fifth steel plate beam 10 is completed, and the rest seven fourth steel plate beams 9 and seven fifth steel plate beams 10 are erected on the third hole at intervals in parallel according to the steps;
erecting a sixth steel plate girder 11: in combination with fig. 6, eight sixth steel plate beams 11 are respectively placed below the corresponding installation positions of the fourth holes, construction hanging cages are respectively hung at the connection positions of the other ends of the fifth steel plate beams 10 and one ends of the sixth steel plate beams 11 and the fifth support pier 5, a first crane 12 is arranged at the fourth support pier 4, a second crane 13 is arranged at the fifth support pier 5, the first crane 12 and the second crane 13 respectively lift one end and the other end of one sixth steel plate beam 11, one end of one sixth steel plate beam 11 is placed at the other end of the fifth steel plate beam 10, an installer enters the construction hanging cage at the position, one end of the sixth steel plate beam 11 is installed with the other end of the fifth steel plate beam 10, meanwhile, the other end of one sixth steel plate beam 11 is placed at the installation position on the fifth support pier 5, the installer enters the construction hanging cage at the position, one end of the sixth steel plate beam 11 is installed on the fifth support pier 5, and the other end of the sixth steel plate beam 11 is installed on the fifth support pier 5 in parallel to the fifth support pier 5, the construction hanging cage is installed on the fifth support pier 5, and the construction hanging cage is installed on the fifth support pier 6 is installed on the fifth support pier according to the first step, and the rest steps are completed, and the construction hanging cage is completed.
In embodiment 1, connecting beams are provided between eight first steel plate beams 6, between eight second steel plate beams 7, between eight third steel plate beams 8, between eight fourth steel plate beams 9, between eight fifth steel plate beams 10, and between eight sixth steel plate beams 11, so as to improve the stability of the entire installation of the steel plate beams.
The method for erecting the bridge-crossing steel plate girder adopts the steel plate girder with a sectional structure, two ends of the steel plate girder are placed on corresponding buttresses through a plurality of hanging steel plate girders, and the steel plate girders are connected and installed by matching with a construction hanging cage, so that the steel plate girder is erected on an old bridge in a certain overhead construction line, and the method has good practicability, novelty and creativity.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" indicate orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
It should be noted that all the directional indicators in the embodiments of the present invention are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.
In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (9)
1. A method of erecting a cross-bridge steel plate girder, the method comprising:
respectively placing a plurality of steel plate beams below two buttresses forming a hole;
installing construction hanging cages at two ends of each steel plate girder;
sequentially hoisting a plurality of steel plate beams, respectively placing two ends of the plurality of steel plate beams at the tops of two buttresses, and connecting the ends of the steel plate beams at the tops of the corresponding buttresses by utilizing the construction hanging cage;
repeating the steps to sequentially finish the erection of the steel plate beams of the rest holes;
the erection method further comprises the following steps:
the steel plate beam is split into a first beam body and a second beam body and is placed below the corresponding hole;
the construction hanging cage is arranged at one end of the first beam body;
lifting two ends of the first beam body, so that one end of the first beam body is placed at the top of one corresponding buttress of the hole;
connecting one end of the first beam body to the top of one buttress corresponding to the hole by utilizing the construction hanging cage;
the construction hanging cages are arranged at the two ends of the second beam body;
lifting two ends of the second beam body, enabling one end of the second beam body to be placed at the other end of the first beam body, and enabling the other end of the second beam body to be placed at the top of the other buttress corresponding to the hole;
and connecting the other end of the first beam body with one end of the second beam body by using the construction hanging cage, and connecting the other end of the second beam body with the top of the other buttress corresponding to the hole.
2. The method for erecting a cross-bridge steel plate girder according to claim 1, wherein hoisting the steel plate girder comprises:
and hoisting the ends of the steel plate beams by using two cranes at the buttresses respectively until the two ends of the steel plate beams are respectively placed at the tops of the two buttresses.
3. The method for erecting a cross-bridge steel plate girder according to claim 2, wherein each station stress leg of each crane is not more than 4m from the center line of the old bridge pier.
4. A method of erecting a cross-bridge steel plate girder according to claim 3, wherein only one said crane is provided between two adjacent piers of said old bridge.
5. The method for erecting a cross-bridge steel plate girder according to claim 1, wherein the construction hanging cage is used for connecting the end of the steel plate girder to the top of the corresponding buttress, and specifically comprises the following steps:
and the installer respectively enters the construction hanging cages at the two ends of the steel plate beam for construction, so that the end parts of the steel plate beam are connected with the corresponding buttresses and the end parts of the adjacent steel plate beams.
6. The method of erecting a cross-bridge steel plate girder according to claim 5, wherein the ends of said steel plate girder are connected to the ends of the adjacent steel plate girder by bolts.
7. The method for erecting a cross-bridge steel plate girder according to claim 6, wherein the pre-tightening torque of the bolting reaches 80% of the design torque after primary screwing and secondary screwing, the number of positioning punching nails is not less than 20%, and the number of punching nails and temporary bolts is not less than 40%.
8. The method of erecting a cross-bridge steel plate girder according to claim 1, further comprising:
when the steel plate beams adjacent to the holes are erected, the steel plate beam of the previous hole positioned on the same straight line stretches into the next hole.
9. A method of erecting a cross-bridge steel sheet girder according to any of the claims 1-8, wherein a diagonal bracing is provided between said steel sheet girder and said buttress.
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| CN202111631114.2A CN114214955B (en) | 2021-12-28 | 2021-12-28 | Method for erecting bridge-crossing steel plate girder |
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| CN202111631114.2A CN114214955B (en) | 2021-12-28 | 2021-12-28 | Method for erecting bridge-crossing steel plate girder |
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| CN113026528A (en) * | 2021-03-10 | 2021-06-25 | 浙江中天恒筑钢构有限公司 | Method for mounting mountain forest space curve steel structure plank road |
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| CN114214955A (en) | 2022-03-22 |
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