CN117403562A - Construction method of suspension bridge girder crossing water area and steep slope mountain land - Google Patents
Construction method of suspension bridge girder crossing water area and steep slope mountain land Download PDFInfo
- Publication number
- CN117403562A CN117403562A CN202311649613.3A CN202311649613A CN117403562A CN 117403562 A CN117403562 A CN 117403562A CN 202311649613 A CN202311649613 A CN 202311649613A CN 117403562 A CN117403562 A CN 117403562A
- Authority
- CN
- China
- Prior art keywords
- girder
- bridge
- span
- crane
- bridge deck
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 64
- 239000000725 suspension Substances 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 12
- 239000004567 concrete Substances 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000009194 climbing Effects 0.000 claims description 3
- 238000009415 formwork Methods 0.000 claims description 3
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 230000000474 nursing effect Effects 0.000 claims description 3
- 239000011513 prestressed concrete Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004574 high-performance concrete Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/02—Suspension bridges
-
- 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
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
-
- 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
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the field of bridge construction, and discloses a construction method of a suspension bridge girder which spans a water area and a steep slope mountain, wherein a cable clamp lifting system is utilized to vertically lift three middle girder sections and a middle bridge deck crane which is arranged on the three girder sections after being split, and the middle bridge deck crane is assembled and installed at two ends of a girder after the three girder sections are just connected; the bridge deck crane in the midspan is utilized to sequentially and symmetrically set up girder sections on the water area from the midspan to the side; and installing a bridge deck crane on the side of the cable tower beam, and after a certain number of girder segments are installed in the midspan, combining the longitudinal girder transporting trolley, and synchronously installing the girder segments in opposite directions with the bridge deck crane in the midspan from the span side to the midspan until closure. The invention is suitable for the construction of the suspension bridge girder which spans water areas and steep slope mountainous regions, and nonstandard construction equipment such as a cable crane, a cable crane and the like is not required. The invention can reduce the construction measure cost, improve the girder erection efficiency and realize standardized operation.
Description
Technical Field
The invention belongs to the technical field of suspension bridge construction, and particularly relates to a suspension bridge girder construction method for crossing a water area and a steep slope mountain.
Background
The traditional suspension bridge girder construction method generally adopts a cable suspension system and a cable-crossing crane system for construction, wherein the cable suspension construction method comprises the steps of waiting until a main cable and a sling are erected, hoisting girder segments near a cable tower, and hoisting the assembled girder segments to positions to be installed in sequence through the cable crane to complete girder erection construction; the construction method of the cable-crossing crane comprises the steps of firstly transporting the girder segments to the position right below the cable-crossing crane after the main cable and the sling are erected, then vertically hoisting the girder segments to the position to be installed, and sequentially and circularly completing girder erection construction. The cable crane and the cable crane span construction technology are widely applied to various bridge constructions, the traditional suspension bridge is usually constructed from span center to span side by adopting the two methods, a large temporary support system matched with the traditional suspension bridge is required to be erected before the two methods are applied, the nonstandard equipment and the temporary structure matched with the nonstandard equipment occupy construction sites and have long construction time, meanwhile, the cable crane and the cable crane span are nonstandard equipment, the whole quality of the equipment and the temporary structure matched with the equipment is poor, the construction measure cost is high, the construction efficiency is influenced, and the engineering economy is reduced.
Disclosure of Invention
In view of the above, the invention aims to provide a construction method of a suspension bridge girder which spans a water area and a steep slope mountain. The invention aims to solve the problems of large construction occupation, long construction time and low engineering economy of the existing method.
In order to achieve the above purpose, the invention provides a construction method of a suspension bridge girder which spans a water area and a steep slope mountain, comprising the following steps:
s1, construction pretreatment;
digging a construction passageway, leveling a construction site, digging a foundation pit of a cable tower and an anchorage system, nursing a bank slope, digging a foundation pit surface by utilizing a drilling pile drilling platform bearing platform, and pouring concrete of a cable tower lower bearing platform and a tower seat;
s2, a prefabricated cable clip lifting system;
s3, constructing two shore cable towers;
the cable tower comprises a tower column and a middle cross beam, and the middle cross beam is of a prestressed concrete structure;
s4, installing a rope clamp and a sling, and installing a rope clamp lifting system at the rope clamp;
s5, assembling three girder sections to be placed in a bridge deck of the approach bridge, installing corresponding bridge decks, and fixing a bridge deck crane of the approach bridge on the three girder sections by using nylon binding belts;
the bridge deck crane in the midspan comprises a bridge deck crane in the left quay span and a bridge deck crane in the right quay span;
s6, transporting the three girder segments provided with the mid-span bridge deck crane to the position right below the corresponding slings of the three mid-span girder segments by using a girder transporting ship, vertically hoisting the mid-span bridge deck crane and the three girder segments to a specified height by using a cable clamp hoisting system, changing the hoisting points into sling hoisting points, and rigidly connecting the three girder segments to finish the installation of the three mid-span girder segments;
the left quay span middle bridge surface crane and the right quay span middle bridge surface crane are respectively arranged at two ends of the three midspan girder sections;
s7, simulating and analyzing by using a finite element method, supporting the subsequent symmetrical erection of the girder segments on the water area from the midspan to the side of the midspan, supporting the vertical hoisting of the girder segments on the non-water area from the side of the midspan to the midspan, and supporting the installation of the girder segments of the closure segment;
s8, splicing girder segments to be installed at two ends of a mid-span girder segment on an approach bridge deck, transporting the girder segments to be installed at two ends of the mid-span girder segment to the position right below corresponding slings by using two girder transporting vessels, vertically hoisting the girder segments to be installed at two ends to a designated height by using a left mid-span bridge surface crane and a right mid-span bridge surface crane, changing the girder segments to sling hoisting points, and connecting the girder segments to be installed at two ends;
s9, repeating the step S8, sequentially carrying out symmetrical construction to the cross sides, carrying out symmetrical construction until the girder sections on the water area analyzed in the step S7 are erected, simultaneously installing a cross-side bridge deck crane and a lifting platform on a middle cross beam of each of the two-bank cable towers, then transporting the first girder sections on the two-bank cross sides to the lifting platform through a girder transporting trolley, vertically lifting the first girder sections on the two-bank cross sides to a designated height through the cross-side bridge deck crane, then changing the first girder sections into sling lifting points, and respectively and fixedly installing the first girder sections on the two-bank cross sides on the left bank and the right bank;
s10, splicing girder segments to be installed on two sides of an approach bridge deck from the span side to the span side, repeating the step S9, and constructing symmetrically from the span side to the span side in sequence until the girder segments on the non-water area analyzed in the step S7 are installed;
s11, repeating the step S9 to finish the installation of the girder segments of the closure section, namely connecting the girder segments installed on the non-water area by the span side with the girder segments installed on the water area by the span center, thereby finishing the construction and erection of the girder of the suspension bridge;
s12, dismantling a bridge deck crane, adjusting the integral line shape of the suspension bridge, rigidly connecting the girder segments after the line shape of the bridge is smooth and the mechanical property is stable, then using concrete to perform joint construction on the bridge deck, and then sequentially paving the bridge deck from the span side to the span center to finish the construction operation of the main body of the suspension bridge.
Further, in step S2, the cable clip lifting system includes an upper end plate, a lower end plate, a pull rod, and a hydraulic lifting device, where the upper end plate and the lower end plate are fixedly connected with the cable clip through the pull rod, and the hydraulic lifting device is installed on the upper side of the upper end plate.
Further, in the step S3, the tower column is constructed by adopting a hydraulic climbing formwork, the middle cross beam is cast-in-situ by adopting a steel pipe bracket, and the middle cross beam and the tower column are constructed in a separated and asynchronous mode.
Further, in the step S5, the mid-span bridge deck crane is evenly split into three parts according to mass, and the split three parts of mid-span bridge deck cranes are respectively bound and fixed on the three girder sections.
Further, in step S6, the left mid-span bridge deck crane and the right mid-span bridge deck are detachably connected to the main girder segment through crane tie rods and jacks.
Further, in the steps S9 and S10, part of the adjacent girder segments are connected by means of hinge.
Further, the main girder segments on the water area are erected from the midspan to the side of the midspan in opposite synchronization with the main girder segments on the non-water area which are vertically lifted and installed from the side of the midspan.
The invention has the beneficial effects that:
the bridge deck crane solves a series of problems of non-standard equipment, long construction time, poor quality control, high measure cost and the like of occupied construction sites and matched temporary structures of the non-standard equipment, and further realizes standardized operation.
In the erection stage of the main girder of the suspension bridge, the method for synchronous opposite construction of the four bridge deck cranes is utilized, the working procedures and the construction time are saved, the construction efficiency is greatly improved, the construction cost is greatly reduced, and the economy is better.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
FIG. 1 is a schematic construction view of a cable clamp lifting system for installing three main beam sections in a span;
FIG. 2 is a schematic construction view of a midspan bridge deck crane for installing a main girder segment from the midspan to the span side;
FIG. 3 is a schematic illustration of a left bank utilizing a side bridge deck crane and a mid-span bridge deck crane to synchronously mount girder segments in opposite directions;
FIG. 4 is a schematic illustration of the simultaneous installation of main beam segments in opposite directions on a right bank using a side bridge crane and a mid-bridge crane;
FIG. 5 is a schematic illustration of a suspension bridge closure;
FIG. 6 is a front view of the cable clamp lift system;
FIG. 7 is a side view of the cable clamp lift system;
reference numerals in the drawings are as follows: the lifting device comprises a middle cross beam 1, a cable clip 2, a sling 3, a main beam section 4, a cable clip lifting system 5, an upper end plate 51, a lower end plate 52, a pull rod 53, a hydraulic lifting 54, a bridge deck crane 6, a nylon strap 7, a carrying Liang Chuan 8, a crane pull rod 9, a jack 10, a girder transporting trolley 11 and a lifting platform 12.
Detailed Description
In order to make the technical scheme, advantages and objects of the present invention more clear, the technical scheme of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiment of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without creative efforts, based on the described embodiments of the present invention belong to the protection scope of the present application.
As shown in fig. 1-7, in this embodiment, the bridge to be constructed is a single-span steel-concrete composite beam ground-anchored suspension bridge with a main span of 600m, the main beams of the suspension bridge are divided into 49 sections, the bridge sections are constructed from the midspan to the span side and from the span side to the midspan in opposite directions by using a midspan bridge deck crane, the two-shore symmetrical construction is performed, the three main beam sections 23' #, 24#, 23# midspan are installed by using a cable-stayed lifting system, the 22# to 11# main beam sections are constructed by a right-shore midspan bridge deck crane, the 0# to 10# main beam sections are constructed by a right-shore bridge deck crane, the 22' # to 11' # main beam sections are constructed by a left-shore midspan bridge deck crane, and the 0' # to 10' # main beam sections are closed by a left-shore bridge deck crane.
The embodiment provides a construction method of a suspension bridge girder crossing a water area and a steep slope mountain land, comprising the following steps:
s1, construction pretreatment
And excavating a construction channel and leveling a construction site, so that the subsequent construction of a cable tower and a foundation thereof is facilitated. And excavating a foundation pit of a cable tower and anchorage system, carrying out bank slope nursing, and directly excavating a foundation pit surface by using a bearing platform by using a bored pile boring platform. And then pouring concrete of the lower bearing platform and the tower seat of the cable tower.
S2, prefabricated cable clamp lifting system 5
The cable clamp lifting system comprises an upper end plate 51, a lower end plate 52, a pull rod 53 and a hydraulic lifting device 54, wherein the upper end plate 51 and the lower end plate 52 are fixedly connected with the cable clamp 2 through the pull rod 53, and the hydraulic lifting device 54 is arranged on the upper side of the upper end plate 51.
S3, constructing two shore cable towers, wherein each cable tower consists of a tower column and a middle cross beam 1, and the middle cross beam 1 is of a prestressed concrete structure. The tower column is constructed by adopting a hydraulic climbing formwork, the middle cross beam is cast-in-situ by adopting a steel pipe bracket, and the construction is separated from the tower column asynchronously.
S4, installing the cable clamp 2 and the sling 3, and installing a cable clamp lifting system 5 at the cable clamp 2 of the three main girder segments 4 in the midspan of 23' #, 24#, and 23#.
S5, assembling 23' #, 24#, 23# girder segments 4 on an approach bridge deck, installing corresponding bridge decks, uniformly splitting a mid-span bridge deck crane 6 into three parts according to mass, putting the split parts on the 23' #, 24#, 23# girder segments, and binding and fixing the split mid-span bridge deck crane with the 23' #, 24#, 23# girder segments by using nylon binding belts 7.
S6, transporting the split three main beam sections 4 of the bridge deck crane 6 and 23' #, 24#, 23# to the lower part of the sling 3 corresponding to the three main beam sections 4 of 23' #, 24#, 23# by using a beam transporting ship 8, vertically hoisting the split three main beam sections 4 of the bridge deck crane 6 and 23' #, 24#, 23# to a designated height by using a cable clamp hoisting system 5, changing the three main beam sections into sling 3 hoisting points, and rigidly connecting the three main beam sections 4 of 23' #, 24#, 23# to finish the installation of the three main beam sections 4 of 23' #, 24#, 23#;
and then, utilizing a finite element method to simulate and analyze, assisting the subsequent symmetrical erection of the girder segments on the water area from the midspan to the side of the midspan, assisting the vertical hoisting of the girder segments on the non-water area from the side of the midspan to the midspan, and assisting the installation of the girder segments of the closure segment.
S7, assembling a left shore and right shore midspan bridge surface crane 6 on the installed 23' #, 24#, 23# midspan girder segments 4, and temporarily fixing the bridge surface crane at two ends of the midspan girder segments 4 by using a bridge surface crane pull rod 9 and a jack 10.
S8, assembling 22' #, 22# girder segments 4 on an approach bridge deck, installing corresponding bridge panels, transporting the 22' #, 22# girder segments 4 from a left bank to the lower part of slings 3 corresponding to the 22' #, 22# girder segments 4 from a right bank by utilizing two girder transporting vessels 8, vertically hoisting the 22' #, 22# girder segments 4 to a designated height by using a left bank bridge crane 6 and a right bank bridge crane 6, changing the hoisting points into hoisting points of slings 3, rigidly connecting 23' # with the 22' #, 23# with the 22# girder segments 4, completing the installation of the 22' #, 22# girder segments 4, loosening a bridge crane pull rod 9 and a jack 10, respectively advancing the left bank bridge crane and the right bank bridge crane by one girder segment length, and temporarily fixing the bridge crane on two ends of the assembled girder segments by using the bridge crane pull rod 9 and the jack 10.
S9, simultaneously starting to set up a lifting platform 12 on the side of the middle cross beam 1 of the cable tower, and installing the bridge deck crane 6.
S10, repeating the step 8, constructing the bridge surface cranes 6 in the left bank and the right bank to 19' # and 19# girder segments 4, respectively hinging 20' # with 19' # and 20# with 19# girder segments 4, and starting construction in the crossing edge.
S11, splicing the 0' # girder segment 4 and the 0# girder segment 4 on an approach bridge deck, installing corresponding bridge panels, transporting the 0' # girder segment 4 to a beam 1 side lifting platform 12 in a cable tower from a left bank and a right bank by utilizing two girder transporting trolleys 11, vertically lifting the 0' # girder segment 4 to a designated height by using a left bank and right bank bridge deck crane 6, changing the 0' # girder segment 4 to a sling 3 lifting point, and respectively fixing the 0' # girder segment 4 and a left bank and right bank support to form temporary supports.
S12, respectively repeating the steps 8 and 11 of the left-bank and right-bank mid-span bridge deck cranes 6 and the left-bank and right-bank mid-span bridge deck cranes 6, carrying out opposite construction and symmetrical construction on two banks, and respectively hinging 16' # and 15' # and 12' # and 11' # and 12# and 11' # and 8' # and 7' # and 4' # and 3' # and 4# and 3# girder sections 4, wherein the rest is rigid connection among the girder sections 4, and after the construction of the left-bank and right-bank mid-span bridge deck cranes 6 is completed until the installation of the 11' # and 11# girder sections 4 is completed, the construction of the left-bank and right-bank mid-span bridge deck cranes 6 is completed until the installation of the 10' # and 10# girder sections 4 is completed, and the erection of the suspension bridge girder is completed.
S13, dismantling four bridge deck cranes 6 on site, adjusting the integral line shape of the suspension bridge, carrying out rigid connection on hinge points among girder segments after the line shape of the bridge is smooth and the mechanical property is stable, then carrying out joint construction on all bridge decks by using high-performance concrete, and then sequentially carrying out bridge deck pavement from span to finish the construction operation of the main body of the suspension bridge.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution, and the present invention is intended to be covered in the scope of the present invention.
Claims (7)
1. The construction method of the suspension bridge main girder crossing over the water area and the steep slope mountain land is characterized by comprising the following steps:
s1, construction pretreatment;
digging a construction passageway, leveling a construction site, digging a foundation pit of a cable tower and an anchorage system, nursing a bank slope, digging a foundation pit surface by utilizing a drilling pile drilling platform bearing platform, and pouring concrete of a cable tower lower bearing platform and a tower seat;
s2, a prefabricated cable clip lifting system;
s3, constructing two shore cable towers;
the cable tower comprises a tower column and a middle cross beam, and the middle cross beam is of a prestressed concrete structure;
s4, installing a rope clamp and a sling, and installing a rope clamp lifting system at the rope clamp;
s5, assembling three girder sections to be placed in a bridge deck of the approach bridge, installing corresponding bridge decks, and fixing a bridge deck crane of the approach bridge on the three girder sections by using nylon binding belts;
the bridge deck crane in the midspan comprises a bridge deck crane in the left quay span and a bridge deck crane in the right quay span;
s6, transporting the three girder segments provided with the mid-span bridge deck crane to the position right below the corresponding slings of the three mid-span girder segments by using a girder transporting ship, vertically hoisting the mid-span bridge deck crane and the three girder segments to a specified height by using a cable clamp hoisting system, changing the hoisting points into sling hoisting points, and rigidly connecting the three girder segments to finish the installation of the three mid-span girder segments;
the left quay span middle bridge surface crane and the right quay span middle bridge surface crane are respectively arranged at two ends of the three midspan girder sections;
s7, simulating and analyzing by using a finite element method, supporting the subsequent symmetrical erection of the girder segments on the water area from the midspan to the side of the midspan, supporting the vertical hoisting of the girder segments on the non-water area from the side of the midspan to the midspan, and supporting the installation of the girder segments of the closure segment;
s8, splicing girder segments to be installed at two ends of a mid-span girder segment on an approach bridge deck, transporting the girder segments to be installed at two ends of the mid-span girder segment to the position right below corresponding slings by using two girder transporting vessels, vertically hoisting the girder segments to be installed at two ends to a designated height by using a left mid-span bridge surface crane and a right mid-span bridge surface crane, changing the girder segments to sling hoisting points, and connecting the girder segments to be installed at two ends;
s9, repeating the step S8, sequentially carrying out symmetrical construction to the cross sides, carrying out symmetrical construction until the girder sections on the water area analyzed in the step S7 are erected, simultaneously installing a cross-side bridge deck crane and a lifting platform on a middle cross beam of each of the two-bank cable towers, then transporting the first girder sections on the two-bank cross sides to the lifting platform through a girder transporting trolley, vertically lifting the first girder sections on the two-bank cross sides to a designated height through the cross-side bridge deck crane, then changing the first girder sections into sling lifting points, and respectively and fixedly installing the first girder sections on the two-bank cross sides on the left bank and the right bank;
s10, splicing girder segments to be installed on two sides of an approach bridge deck from the span side to the span side, repeating the step S9, and constructing symmetrically from the span side to the span side in sequence until the girder segments on the non-water area analyzed in the step S7 are installed;
s11, repeating the step S9 to finish the installation of the girder segments of the closure section, namely connecting the girder segments installed on the non-water area by the span side with the girder segments installed on the water area by the span center, thereby finishing the construction and erection of the girder of the suspension bridge;
s12, dismantling a bridge deck crane, adjusting the integral line shape of the suspension bridge, rigidly connecting the girder segments after the line shape of the bridge is smooth and the mechanical property is stable, then using concrete to perform joint construction on the bridge deck, and then sequentially paving the bridge deck from the span side to the span center to finish the construction operation of the main body of the suspension bridge.
2. The method for constructing the main girder of the suspension bridge crossing over water areas and steep hills according to claim 1, wherein the method comprises the following steps: in step S2, the cable clip lifting system includes an upper end plate, a lower end plate, a pull rod, and a hydraulic lifting device, where the upper end plate and the lower end plate are fixedly connected with the cable clip through the pull rod, and the hydraulic lifting device is installed on the upper side of the upper end plate.
3. The method for constructing the main girder of the suspension bridge crossing over water areas and steep hills according to claim 1, wherein the method comprises the following steps: in the step S3, the tower column is constructed by adopting a hydraulic climbing formwork, the middle cross beam is cast-in-situ by adopting a steel pipe bracket, and the middle cross beam and the tower column are constructed in a separated and asynchronous mode.
4. The method for constructing the main girder of the suspension bridge crossing over water areas and steep hills according to claim 1, wherein the method comprises the following steps: in the step S5, the bridge deck crane is evenly split into three parts according to the mass, and the split three parts of bridge deck cranes are respectively bound and fixed on the three girder sections.
5. The method for constructing the main girder of the suspension bridge crossing over water areas and steep hills according to claim 1, wherein the method comprises the following steps: in the step S6, the left-shore middle bridge surface crane and the right-shore middle bridge surface are detachably connected with the girder segments through crane pull rods and jacks.
6. The method for constructing the main girder of the suspension bridge crossing over water areas and steep hills according to claim 1, wherein the method comprises the following steps: in steps S9 and S10, a portion of adjacent girder segments are connected by means of a hinge.
7. The method for constructing the main girder of the suspension bridge crossing over water areas and steep hills according to claim 1, wherein the method comprises the following steps: and the main girder sections on the water area are erected from the midspan to the side of the midspan in opposite synchronization with the main girder sections on the non-water area which are vertically lifted and installed from the side of the midspan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311649613.3A CN117403562A (en) | 2023-12-05 | 2023-12-05 | Construction method of suspension bridge girder crossing water area and steep slope mountain land |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311649613.3A CN117403562A (en) | 2023-12-05 | 2023-12-05 | Construction method of suspension bridge girder crossing water area and steep slope mountain land |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117403562A true CN117403562A (en) | 2024-01-16 |
Family
ID=89500112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311649613.3A Pending CN117403562A (en) | 2023-12-05 | 2023-12-05 | Construction method of suspension bridge girder crossing water area and steep slope mountain land |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117403562A (en) |
-
2023
- 2023-12-05 CN CN202311649613.3A patent/CN117403562A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112227206B (en) | Process design and construction method for ground anchor to self-anchored beam | |
| CA1311094C (en) | Bridge construction | |
| GB2608509A (en) | Asymmetric installation construction method for straddle-type light rail special steel box girder extradosed bridge | |
| CN110552296B (en) | Cable-stayed bridge dismantling construction method | |
| CN103290784B (en) | Arched girder conjugative bridge construction method for hanging | |
| CN106012872B (en) | Continuous rigid frame bridge without dorsal funciculus oblique pull reinforcement system and construction method | |
| CN112342917A (en) | Combined construction method for pushing beam first and then lifting arch of large-span tied arch bridge | |
| CN110820582A (en) | Method for erecting steel truss girder of cable-stayed bridge | |
| CN111926715B (en) | Installation method of steel box girder bridge | |
| CN113802461B (en) | Steel box girder erection method | |
| CN117403562A (en) | Construction method of suspension bridge girder crossing water area and steep slope mountain land | |
| CN214328478U (en) | Three-tower self-anchored suspension bridge | |
| CN117449210A (en) | Construction method of suspension bridge girder crossing water area | |
| CN114541283A (en) | Structure and method for solving continuous downwarping problem of large-span PC beam bridge | |
| CN107142830A (en) | Steel pipe web prestressing force steel reinforced concrete combines main beam structure and construction method | |
| CN107419670A (en) | Hybrid structure of arch and beam formula continuous rigid frame bridge winds up walking cradle construction device and method | |
| CN111472285A (en) | Method for mounting main bridge variable-section continuous steel truss girder by using cable crane | |
| CN206693070U (en) | Hybrid structure of arch and beam formula continuous rigid frame bridge winds up walking cradle construction device | |
| CN111472284A (en) | Assembling method for cantilever of prefabricated segmental beam portal crane of urban viaduct | |
| CN114657880B (en) | String and suspension cable combined pedestrian bridge formed by space cables and construction method thereof | |
| CN114250713B (en) | Permanent-face combined mountain area upper bearing arch bridge structure and construction method thereof | |
| CN114673066B (en) | Ground anchor type inclined leg rigid frame bridge and construction method thereof | |
| CN114263095B (en) | Multi-span continuous steel tube concrete basket arch bridge with underpinning type cross tie bars and construction method | |
| CN206902529U (en) | Steel pipe web prestressing force steel reinforced concrete combines main beam structure | |
| CN220364848U (en) | Thrust-resistant pedestrian arch bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |