CN111893886A - Construction method of full-prefabricated assembled corrugated steel web bridge with web and top and bottom plates in welded connection - Google Patents
Construction method of full-prefabricated assembled corrugated steel web bridge with web and top and bottom plates in welded connection Download PDFInfo
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- CN111893886A CN111893886A CN202010639651.0A CN202010639651A CN111893886A CN 111893886 A CN111893886 A CN 111893886A CN 202010639651 A CN202010639651 A CN 202010639651A CN 111893886 A CN111893886 A CN 111893886A
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/10—Cantilevered erection
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
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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
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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Abstract
The invention discloses a construction method of a fully prefabricated assembled corrugated steel web bridge with webs welded with a top bottom plate, which comprises the steps of firstly completing cast-in-place construction of a 0# section and a 1# section, firstly hoisting a new prefabricated corrugated steel web to the bridge and temporarily fixing the prefabricated corrugated steel web of the 1# section with a prefabricated corrugated steel web of the 1# section through bolts in the construction process of the 2# section, then welding to form a welding seam between the corrugated steel webs for fixation, and then hoisting a steel diaphragm to the position between the two prefabricated corrugated steel webs for welding fixation; then hoisting the concrete prefabricated bottom plate to the position below the bridge, temporarily fixing the concrete prefabricated bottom plate and the prefabricated corrugated steel web plate, and forming a bottom plate post-cast strip between the two sections of bottom plates in a cast-in-place manner; installing the concrete precast roof according to the same method to form a roof post-cast strip; repeating the steps until the construction of the cantilever section of the bridge is completed; and finally, constructing the bridge deck to finish the construction of the fully prefabricated assembled corrugated steel web bridge. The invention adopts full-prefabricated construction, improves the concrete quality, shortens the time of field high-altitude operation and reduces the engineering risk.
Description
Technical Field
The invention belongs to the field of bridge engineering, and relates to a construction method of a corrugated steel web bridge, in particular to a construction method of a full-prefabricated assembled corrugated steel web bridge with a web and a top bottom plate in welded connection.
Background
At the end of the last century, the research and application of corrugated steel web girder bridges have begun in China, and units such as department of transportation scientific research and design institute, southwest transportation university, southeast university, Chongqing transportation university and the like have studied the buckling strength, scheme design, effective width of bridge decks, shear connection keys and the like of steel webs. In 2006, along with the design and construction of bridges such as the main bridge of the Huanghe main bridge in Juancheng Shandong and the Nanshan bridge in Shenzhen, the PC bridge with the corrugated steel web in China enters into a scale-forming engineering practical stage. The corrugated steel web is used for modern bridge construction with the structural advantages of good economy, low carbon, environmental protection, constructability, diversity of modes and the like.
As shown in fig. 1, in the conventional corrugated steel web bridge segmental construction, generally, in order to facilitate installation of the first-segment corrugated steel web, 0# block and 1# block are constructed simultaneously. The construction sequence of each section of the corrugated steel web girder is as follows: the method comprises the steps of bottom film and side mold installation and adjustment → bottom plate steel bar (bottom layer) binding → installation of corrugated steel web → bottom plate binding, web, diaphragm plate steel bar, vertical prestress construction → installation of inner film → first concrete pouring construction → residual web and diaphragm plate steel bar binding, external beam tube embedding in advance → coil buckle support installation, template installation → top plate steel bar binding, top plate prestress pipeline installation, hanging basket embedded part installation → second concrete pouring → prestress cable installation, tensioning → pore channel grouting. As seen from the construction sequence, the traditional corrugated steel web bridge has small working surface and long working time during construction, and the danger of high-altitude operation is greatly increased; each construction step can be carried out after the previous construction step is finished, so that the construction period is greatly prolonged. Therefore, it is necessary to design a fully prefabricated assembled corrugated steel web bridge with a web welded to a top plate and a bottom plate and a construction method thereof to solve the above problems.
Disclosure of Invention
The invention aims to solve the problems that the existing connection mode of the corrugated steel web and the top bottom plate is mostly cast-in-place, the construction surface is small, the construction is difficult, the construction time is long and the like, and provides a fully-prefabricated assembled construction corrugated steel web bridge with a web and a top bottom plate which are connected in a welding mode and have the advantages of simple construction process, low cost and high efficiency and a construction method thereof.
In order to solve the technical problems, the invention adopts factory processing and field connection construction of the corrugated steel web and the prefabricated top bottom plate to replace the simultaneous cast-in-place construction of the corrugated steel web and the top bottom plate, and the specific technical scheme is as follows:
a construction method of a full-prefabricated assembled corrugated steel web bridge with a web and a top bottom plate welded together is characterized by comprising the following steps:
7, repeating the steps 3 to 6, constructing the No. 3 and the later sections until the construction of the cantilever section of the bridge is finished, and then carrying out cast-in-place construction on the closure section;
and 8, constructing the bridge deck to finish the construction of the fully prefabricated assembled corrugated steel web bridge.
Furthermore, the corrugated steel web plate convex groove joint comprises an embedded steel plate, an inner corrugated steel plate and an outer corrugated steel plate, the inner corrugated steel plate and the outer corrugated steel plate are welded on the inner side and the outer side of one surface of the embedded steel plate to form a corrugated groove matched with the shape of the prefabricated corrugated steel web plate, and bolt holes connected with the prefabricated corrugated steel web plate are arranged in corresponding positions on the inner corrugated steel plate and the outer corrugated steel plate; the other side of the embedded steel plate is provided with shear nails distributed in an array manner, the embedded steel plate in the middle and the shear nails on the embedded steel plate are embedded in the concrete prefabricated bottom plate or the concrete prefabricated top plate, and the embedded steel plates at two ends and the shear nails on the embedded steel plates are positioned in the area of the bottom plate cast-in-place belt or the top plate cast-in-place belt.
Further, in the step 5, the concrete construction method of the post-cast strip of the concrete floor comprises the following steps:
and after welding the prefabricated corrugated steel web plate and the corrugated steel web plate tongue joint, chiseling the connecting part of the concrete prefabricated bottom plate, erecting a formwork of the post-cast strip of the concrete bottom plate, binding U-shaped connecting steel bars, and performing cast-in-place construction to form the post-cast strip of the concrete bottom plate.
Further, in the step 6, the concrete construction method of the concrete roof post-cast strip comprises the following steps:
and after welding the prefabricated corrugated steel web plate and the corrugated steel web plate tongue joint, chiseling the connecting part of the concrete prefabricated top plate, erecting a formwork of the post-cast strip of the concrete top plate, binding U-shaped connecting steel bars, and performing cast-in-place construction to form the post-cast strip of the concrete bottom plate.
Further, in the steps 5 and 6, the method for binding the U-shaped connecting steel bars comprises the following steps:
and (3) cross-connecting the U-shaped connecting steel bars with the previous section of U-shaped connecting steel bars, inserting transverse steel bars between the U-shaped connecting steel bars, connecting shear nails extending out of the convex groove joints of the corrugated steel web plates, and connecting the upper and lower layers of transverse steel bars by stirrups to complete U-shaped connecting steel bar binding.
Furthermore, the welding seams between the corrugated steel webs, the concrete top plate post-cast strip and the concrete bottom plate post-cast strip are arranged in a staggered mode, so that the corrugated steel webs, the concrete top plate post-cast strip and the concrete bottom plate post-cast strip are not on the same plumb line.
The invention has the following beneficial effects:
the prefabricated top bottom plate and the corrugated steel web plate are assembled on site to replace traditional cast-in-place integral construction, so that full-prefabricated construction is realized, the concrete quality is improved, the time of on-site high-altitude operation is shortened, the engineering risk is reduced, the construction is green and environment-friendly, the total progress of the engineering is accelerated, the construction period is shortened, the construction cost is lower, and the prefabricated corrugated steel web plate has strong market competitiveness in municipal engineering, environmental protection area engineering and emergency engineering.
Drawings
FIG. 1 is a flow chart of construction of each section of a conventional corrugated steel web bridge.
FIG. 2 is a schematic diagram of the construction of the present invention.
Fig. 3 is a schematic view of a concrete precast floor.
Fig. 4 is a schematic view of a concrete precast ceiling panel.
FIG. 5 is a schematic view of a corrugated steel web tongue and groove joint design for connecting a web to a top and bottom plate.
FIG. 6 is a left and top view of the corrugated steel web tongue and groove joint of FIG. 5.
FIG. 7 is a view showing a construction of a connection post-cast strip, in which the concrete bottom plate post-cast strip is identical to the concrete top plate post-cast strip.
FIG. 8 is a construction drawing of a 0# section and a 1# section beam in the first construction step.
FIG. 9 is a construction drawing showing the installation of corrugated steel webs in the third construction step.
Fig. 10 is a left, top view of the corrugated steel web of fig. 9.
FIG. 11 is a construction drawing showing the installation of the steel diaphragms in the fourth construction step.
FIG. 12 is a top view of the steel diaphragm of FIG. 11.
Fig. 13 is a construction drawing of assembling and pouring the concrete prefabricated bottom plate in the fifth construction step.
Fig. 14 is a left side view of fig. 13.
FIG. 15 shows a construction process of assembling and pouring the precast concrete roof panel in the sixth step.
Fig. 16 is a left side view of fig. 15.
Fig. 17 is a construction drawing of a three-span cantilever in the seventh construction step.
Fig. 18 is a construction drawing of a closure section in the construction step eight.
1-precast concrete bottom plate, 1.1-U-shaped connecting steel bar, 1.2-precast concrete bottom plate post-cast strip, 2-precast concrete top plate, 2.1-U-shaped connecting steel bar, 2.2-precast concrete top plate post-cast strip, 3-precast corrugated steel web plate, 3.1-bolt hole between corrugated steel web plates, 3.4-high-strength bolt, 3.5-welded seam between corrugated steel web plates, 3.6-corrugated steel web plate top view, 3.7-corrugated steel web plate left view, 3.8-corrugated steel web plate reinforcement hole, 3.9-corrugated steel web plate convex groove joint, 3.10-corrugated steel web plate convex groove joint projection, 3.11-corrugated steel web plate reserved bolt hole, 3.12-rear embedded corrugated steel web plate convex groove joint top view, 3.13-left view of corrugated steel web plate convex groove joint of embedded welding nail, 3.14-convex groove joint reserved bolt hole, 3.15-top view of corrugated steel web tongue joint of embedded welding nail, 3.16-shear nail, 3.17-welding joint of corrugated steel web tongue joint outside bottom plate, 3.18-welding joint of corrugated steel web tongue joint outside top plate, 3.19-inside corrugated steel plate, 3.20-outside corrugated steel plate, 3.21-embedded steel plate, 4-steel diaphragm plate, 4.1-manhole, 4.2-steel diaphragm plate reserved joint, 4.3-steel diaphragm plate reserved bolt hole, 4.4-steel diaphragm plate welding joint, 6-pier foundation, 8-transverse steel bar, 9-stirrup.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The mode and implementation steps of the invention are further described by taking a single-box type corrugated steel web beam as an example and combining the attached drawings
Firstly, as shown in fig. 8, a pier foundation is constructed, cantilever sections of a bridge are constructed in sections, cast-in-place construction of 0# section and 1# section is completed, prefabrication construction is adopted for 2# section and subsequent sections, prefabricated corrugated steel webs 3 are pre-buried into concrete webs in the construction process of 1# section, and U-shaped connecting steel bars 1.1 and 2.1 are reserved at the end parts of a top plate and a bottom plate of 1# section.
And secondly, as shown in fig. 3 to 7, manufacturing a 2# and later-segment precast concrete bottom plate 1 and a precast concrete top plate 2, wherein wave-shaped steel web tongue and groove joints 3.9 connected with a precast wave-shaped steel web are pre-embedded on the upper surface of the precast concrete bottom plate 1 and the lower surface of the precast concrete top plate 2, the wave-shaped steel web tongue and groove joints 3.9 are longer than the precast concrete bottom plate 1 and the precast concrete top plate 2 in length and extend out at two ends to form wave-shaped steel web tongue and groove joint protrusions 3.10, and U-shaped connecting steel bars 1.1 and 2.1 for connection are pre-embedded at two ends of the precast concrete bottom plate 1 and the precast concrete top plate 2 respectively.
And thirdly, constructing the 2# section, namely as shown in fig. 9 and 10, firstly hoisting a prefabricated corrugated steel web 3 to the bridge, then temporarily fixing the prefabricated corrugated steel web 3 with the prefabricated corrugated steel web 3 of the previous section (the 1# section) through a high-strength bolt 3.4 and a connecting hole 3.1 between the corrugated steel webs, finally adjusting the line shape, welding the joint of the two prefabricated corrugated steel webs 3 to form a welding seam 3.5 between the corrugated steel webs (the weather temperature during welding needs to be controlled in the process), and installing the two prefabricated corrugated steel webs 3 of the 2# section according to the method.
Fourthly, constructing the transverse plate, as shown in fig. 10-12, firstly hoisting the steel diaphragm plate between two prefabricated corrugated steel webs 3 of the 4-2 # section, then temporarily fixing the steel diaphragm plate 4 and the two prefabricated corrugated steel webs 3 through high-strength bolts 3.4 and steel diaphragm reserved bolt holes 4.3 on a steel diaphragm reserved joint 4.2, adjusting the position of the steel diaphragm plate 4 to be hoisted, welding, and forming a steel diaphragm welding seam 4.4 between the steel diaphragm plate 4 and the steel diaphragm reserved joint 4.2 (the weather temperature during welding needs to be controlled in the process).
Fifthly, constructing the bottom plate, as shown in figures 3, 5-7 and 13-14, firstly hoisting the precast concrete bottom plate 1 to the position under the bridge, temporarily fixing the precast corrugated steel web plate 3 and the precast concrete bottom plate 1 through the corrugated steel web plate reserved bolt holes 3.11 and the tongue and groove joint reserved bolt holes 3.14 by using high-strength bolts 3.4, then adjusting the line shape, welding the precast corrugated steel web plate 3 and the corrugated steel web plate tongue and groove joints 3.9 of the precast concrete bottom plate 1 at the joint to form a convex and groove joint welding seam 3.17 outside the bottom plate, finally performing roughening treatment on the joint of the precast concrete bottom plate 1, erecting a mold, cross-connecting the U-shaped connecting steel bars 1.1 and the previous U-shaped connecting steel bars 1.1, inserting the transverse steel bars 8 between the U-shaped connecting steel bars 1.1, connecting the shear nails 3.16 of the convex and groove joint protrusions 3.10 of the corrugated steel web plate, and fixing the shear nails 3.16 and the U-shaped connecting steel bars 1.1 by using spot welding, the transverse reinforcing steel bars 8 are arranged at an upper layer and a lower layer, the upper transverse reinforcing steel bars 8 and the lower transverse reinforcing steel bars 8 are connected through the stirrups 9, and the shear nails 3.16 of the U-shaped connecting reinforcing steel bars 1.1, the transverse reinforcing steel bars 8, the stirrups 9 and the protruding parts 3.10 of the corrugated steel web convex groove joint between the concrete prefabricated bottom plate 1 of the previous section and the concrete bottom plate are poured to form a post-pouring strip 1.2.
Sixthly, as shown in fig. 4-7 and fig. 15-16, firstly hoisting the precast concrete top plate 2 to the bridge, temporarily fixing the precast corrugated steel web plate 3 and the corrugated steel web plate tongue-and-groove joint 3.9 of the precast concrete top plate 2 through the corrugated steel web plate pre-bolt hole 3.11 and the tongue-and-groove joint pre-bolt hole 3.14 by using a high-strength bolt 3.4, adjusting the line shape, welding the precast corrugated steel web plate 3 and the corrugated steel web plate tongue-and-groove joint 3.9 of the precast concrete top plate 2 at the joint to form a top plate outer corrugated steel web plate tongue-and-groove joint weld joint 3.18, finally performing roughening treatment on the joint of the precast concrete top plate 2, erecting a mold, cross-connecting the U-shaped connecting steel bars 2.1 with the previous section of U-shaped connecting steel bars 2.1, inserting the transverse steel bars 8 between the U-shaped connecting steel bars 2.1, connecting the shear nails 3.16 of the corrugated steel web plate tongue-and the U-and groove joint protrusions 3.10, fixing the transverse steel bars with the spot welding 3.16 and the U-shaped connecting steel bars, two-layer about the transverse reinforcement 8 sets up to two-layer 8 about connecting with stirrup 9, U shaped steel muscle 2.1, transverse reinforcement 8, stirrup 9 and shear force nail 3.16 formation concrete roof post-cast strip 2.2 between this section of pouring construction and preceding section concrete prefabricated roof 2.
And seventhly, as shown in fig. 16 and 17, setting certain intervals among the precast concrete top plate post-cast strip 2.2, the precast concrete bottom plate post-cast strip 1.2 and the welding seam 3.5 between the corrugated steel webs respectively to reduce the influence of early strength and later shrinkage creep of the concrete on the post-cast strip, and circularly constructing the 3# and later sections until the construction of the cantilever section of the whole bridge is completed.
Eighthly, as shown in fig. 18, adopting concrete cast-in-place construction to close the section, firstly erecting a formwork, binding steel bars through the steel bar holes 3.8 of the corrugated steel web plate to connect the prefabricated corrugated steel web plate 3 with the steel bars of the concrete web plate, and pouring concrete to complete the cast-in-place construction of the closure section.
And ninthly, performing bridge deck construction and finishing full-bridge construction.
As shown in fig. 2, the welded joint 3.5 between the corrugated steel webs, the concrete top plate post-cast strip 2.2 and the concrete bottom plate post-cast strip 1.2 are arranged in a staggered manner, so that the three strips are not on a plumb line, and the bearing capacity of the bridge can be greatly improved.
It should be noted that, as shown in fig. 5 and 6, the corrugated steel web tongue-and-groove joint 3.9 includes an embedded steel plate 3.21, an inner corrugated steel plate 3.19, and an outer corrugated steel plate 3.20, the inner corrugated steel plate 3.19 and the outer corrugated steel plate 3.20 are welded on the inner and outer sides of one surface of the embedded steel plate 3.21 to form a tongue-and-groove shape matching with the upper and lower two corrugated edges of the prefabricated corrugated steel web 3, and tongue-and-groove joint reserved bolt holes 3.14 connected with the prefabricated corrugated steel web 3 are provided at corresponding positions on the inner corrugated steel plate 3.19 and the outer corrugated steel plate 3.20; the other side of the embedded steel plate 3.21 is provided with shear nails 3.16 distributed in an array manner, the embedded steel plate 3.21 in the middle and the shear nails 3.16 thereon are embedded in the concrete prefabricated bottom plate 1 or the concrete prefabricated top plate 2, and the embedded steel plates 3.21 at the two ends and the shear nails 3.16 thereon are positioned in the concrete bottom plate post-cast strip 1.2 or the concrete top plate post-cast strip 2.2 area.
The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.
Claims (6)
1. A construction method of a full-prefabricated assembled corrugated steel web bridge with a web and a top bottom plate welded together is characterized by comprising the following steps:
step 1, constructing a pier foundation, constructing cantilever sections of a bridge in sections on the pier foundation, completing cast-in-place construction of a 0# section and a 1# section, adopting prefabrication construction for a 2# section and subsequent sections, embedding prefabricated corrugated steel webs into concrete webs in the construction process of the 1# section, and reserving U-shaped connecting steel bars at the end parts of a top plate and a bottom plate of the 1# section;
step 2, manufacturing a concrete prefabricated bottom plate and a concrete prefabricated top plate of the No. 2 and later sections, wherein corrugated steel web convex groove joints connected with a prefabricated corrugated steel web are pre-embedded in the upper surface of the concrete prefabricated bottom plate and the lower surface of the concrete prefabricated top plate, and U-shaped connecting reinforcing steel bars for connection are pre-embedded in two ends of the concrete prefabricated bottom plate and two ends of the concrete prefabricated top plate respectively;
step 3, constructing the 2# segment, namely firstly hoisting a new prefabricated corrugated steel web plate to the bridge, then temporarily fixing the new prefabricated corrugated steel web plate with the 1# segment prefabricated corrugated steel web plate through high-strength bolts, adjusting the line shape, finally welding to form a welding seam between the corrugated steel web plates, and installing the two prefabricated corrugated steel web plates of the 2# segment according to the method;
step 4, hoisting the steel diaphragm plate to a position between two prefabricated corrugated steel webs of the No. 2 section, temporarily fixing the steel diaphragm plate with the two prefabricated corrugated steel webs through high-strength bolts and reserved joints of the steel diaphragm plate, adjusting the position, and welding to form a welding seam of the steel diaphragm plate;
step 5, hoisting the concrete prefabricated bottom plate to the position below the bridge, temporarily fixing the concrete prefabricated bottom plate and the prefabricated corrugated steel web plate by utilizing the high-strength bolts and the corrugated steel web plate convex groove joints, and then welding the prefabricated corrugated steel web plate and the corrugated steel web plate convex groove joints to form convex groove joint welding seams; forming a post-cast strip of the concrete bottom plate by cast-in-place construction between the two sections of the bottom plates;
step 6, hoisting the concrete precast roof plate to the bridge, temporarily fixing the concrete precast roof plate and the precast corrugated steel web plate by using the high-strength bolt and the corrugated steel web plate convex groove joint, and then welding the precast corrugated steel web plate and the precast corrugated steel web plate to form a convex groove joint welding seam; forming a post-cast strip of the concrete roof plate by cast-in-place construction between the two sections of roof plates;
7, repeating the steps 3 to 6, constructing the No. 3 and the later sections until the construction of the cantilever section of the bridge is finished, and then carrying out cast-in-place construction on the closure section;
and 8, constructing the bridge deck to finish the construction of the fully prefabricated assembled corrugated steel web bridge.
2. The construction method of the fully-prefabricated assembled corrugated steel web bridge with the web welded with the top and bottom plates as claimed in claim 1, is characterized in that: the corrugated steel web plate convex groove joint comprises an embedded steel plate, an inner corrugated steel plate and an outer corrugated steel plate, the inner corrugated steel plate and the outer corrugated steel plate are welded on the inner side and the outer side of one surface of the embedded steel plate to form a corrugated groove matched with the shape of the prefabricated corrugated steel web plate, and bolt holes connected with the prefabricated corrugated steel web plate are arranged in corresponding positions on the inner corrugated steel plate and the outer corrugated steel plate; the other side of the embedded steel plate is provided with shear nails distributed in an array manner, the embedded steel plate in the middle and the shear nails on the embedded steel plate are embedded in the concrete prefabricated bottom plate or the concrete prefabricated top plate, and the embedded steel plates at two ends and the shear nails on the embedded steel plates are positioned in the area of the bottom plate cast-in-place belt or the top plate cast-in-place belt.
3. The construction method of the fully-prefabricated assembled corrugated steel web bridge with the web welded with the top and bottom plates as claimed in claim 2, is characterized in that: in the step 5, the concrete construction method of the post-cast strip of the concrete bottom plate comprises the following steps:
and after welding the prefabricated corrugated steel web plate and the corrugated steel web plate tongue joint, chiseling the connecting part of the concrete prefabricated bottom plate, erecting a formwork of the post-cast strip of the concrete bottom plate, binding U-shaped connecting steel bars, and performing cast-in-place construction to form the post-cast strip of the concrete bottom plate.
4. The construction method of the fully-prefabricated assembled corrugated steel web bridge with the web welded with the top and bottom plates as claimed in claim 3, is characterized in that: in the step 6, the concrete construction method of the post-cast strip of the concrete roof comprises the following steps:
and after welding the prefabricated corrugated steel web plate and the corrugated steel web plate tongue joint, chiseling the connecting part of the concrete prefabricated top plate, erecting a formwork of the post-cast strip of the concrete top plate, binding U-shaped connecting steel bars, and performing cast-in-place construction to form the post-cast strip of the concrete bottom plate.
5. The construction method of the fully-prefabricated assembled corrugated steel web bridge with the web welded with the top and bottom plates as claimed in claim 4, is characterized in that: in the steps 5 and 6, the U-shaped connecting steel bar binding method comprises the following steps:
and (3) cross-connecting the U-shaped connecting steel bars with the previous section of U-shaped connecting steel bars, inserting transverse steel bars between the U-shaped connecting steel bars, connecting shear nails extending out of the convex groove joints of the corrugated steel web plates, and connecting the upper and lower layers of transverse steel bars by stirrups to complete U-shaped connecting steel bar binding.
6. The construction method of the fully prefabricated assembled corrugated steel web bridge with the web welded with the top and bottom plates as claimed in any one of claims 1 to 5, characterized in that: the welding seams between the corrugated steel webs, the concrete top plate post-cast strip and the concrete bottom plate post-cast strip are arranged in a staggered mode, so that the corrugated steel webs, the concrete top plate post-cast strip and the concrete bottom plate post-cast strip are not on the same plumb line.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201202084Y (en) * | 2008-06-03 | 2009-03-04 | 万水 | Corrugated steel web-prestressed concrete combined box grinder subsection |
| KR20130088246A (en) * | 2012-01-31 | 2013-08-08 | 권희재 | Connecting structure of corrugated steel plate web-psc composite girder |
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| CN209162623U (en) * | 2018-11-15 | 2019-07-26 | 兰州交通大学 | A kind of Wavelike steel webplate Composite abutment and girder thin portion connection structure |
| CN210596963U (en) * | 2019-06-19 | 2020-05-22 | 苏交科集团股份有限公司 | Self-bearing composite structure bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201202084Y (en) * | 2008-06-03 | 2009-03-04 | 万水 | Corrugated steel web-prestressed concrete combined box grinder subsection |
| KR20130088246A (en) * | 2012-01-31 | 2013-08-08 | 권희재 | Connecting structure of corrugated steel plate web-psc composite girder |
| CN204185755U (en) * | 2014-11-03 | 2015-03-04 | 河南大建桥梁钢构股份有限公司 | A kind of Wavelike steel webplate post-stressed concrete T beam |
| CN108824162A (en) * | 2018-07-30 | 2018-11-16 | 重庆大学 | A kind of steel_concrete composite beam and its construction method using plain plate and corrugated sheet steel mixing web |
| CN209162623U (en) * | 2018-11-15 | 2019-07-26 | 兰州交通大学 | A kind of Wavelike steel webplate Composite abutment and girder thin portion connection structure |
| CN210596963U (en) * | 2019-06-19 | 2020-05-22 | 苏交科集团股份有限公司 | Self-bearing composite structure bridge |
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