CN112502043A - Multilayer bridge construction method and construction support system - Google Patents
Multilayer bridge construction method and construction support system Download PDFInfo
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- CN112502043A CN112502043A CN202011228871.0A CN202011228871A CN112502043A CN 112502043 A CN112502043 A CN 112502043A CN 202011228871 A CN202011228871 A CN 202011228871A CN 112502043 A CN112502043 A CN 112502043A
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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
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Abstract
The invention discloses a multi-layer bridge construction method and a construction support system, wherein the construction method comprises bottom bridge construction and upper bridge construction, a bottom bridge system is laid on the top of a first jig frame, a second jig frame is arranged on the outer side of the support bridge system, a conversion device is erected on the top of the second jig frame and the support bridge system, and a top bridge system is laid on the top of the conversion device; the supporting system comprises a first jig frame, a second jig frame and a conversion device, wherein the conversion device is erected at the tops of the second jig frame and the supporting bridge system and used for supporting the top bridge system. According to the multi-layer bridge construction method and the construction support system, the conversion device is arranged to support the laying of the top bridge system, the construction of the upper bridge does not depend on the installation of the web members, the construction efficiency is high, the method and the system can be suitable for the construction of various bridges, and the application range is wide.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a multi-layer bridge construction method and a construction supporting system.
Background
With the rapid increase of traffic flow, the traffic jam of cities is relieved because the multi-layer bridge can be used for traffic vehicles to run on different bridge floors, and the multi-layer bridge becomes a main traffic hub of the cities. Traditional multilayer bridge construction adopts the construction methods of sectional type usually, if whole segmentation hoist and mount, needs a large amount of bed-jigs of assembling, and need occupy great assembly place, and the efficiency of construction is low, if layering segmentation hoist and mount, and the requirement to web member installation accuracy is higher, and is not suitable for the bridge that has the extroversion truss.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a multi-layer bridge construction method which can improve the construction efficiency of a multi-layer bridge and has a wide application range.
The invention further provides a multi-layer bridge construction supporting system.
The multilayer bridge construction method according to the embodiment of the first aspect of the invention is characterized by comprising the following steps:
constructing a bottom bridge: arranging a first jig frame, and paving a bottom bridge system on the top of the first jig frame;
constructing an upper bridge: arranging a second jig frame on the outer side of a supporting bridge system, erecting a conversion device on the second jig frame and the top of the supporting bridge system, and laying a top bridge system on the top of the conversion device;
wherein the construction step of the upper bridge is repeated for N times, and N is more than or equal to 1; and when N is 1, the supporting bridge system is the bottom bridge system, and when N is more than 1, the supporting bridge system in the upper-layer bridge construction for the Nth time is the top bridge system in the upper-layer bridge construction for the N-1 th time.
The construction method of the multilayer bridge provided by the embodiment of the invention at least has the following beneficial effects:
according to the multi-layer bridge construction method in the embodiment of the invention, the conversion device is arranged to support the laying of the top bridge system, the construction of the upper bridge system does not depend on the installation of the web members, the laying of the top bridge system can be carried out after the conversion device is erected, the construction efficiency is high, the required jig frame and the support system are simple, a large field is not occupied, and the jig frame does not interfere with the web members, so that the construction method can be suitable for the construction of various types of bridges, and the application range is wide.
According to some embodiments of the invention, the step of constructing the sub-floor bridge further comprises: and installing a lower chord on the top of the first jig frame, and installing a bottom deck on the lower chord to form the bottom bridge system.
According to some embodiments of the invention, the upper bridge construction step further comprises: and assembling standard knots step by step to form the second jig frame, and correcting after the first jig frame is installed and/or correcting after the second jig frame is installed.
According to some embodiments of the present invention, after the construction of the underlying bridge is completed, the web members are installed on the supporting bridge system, and the construction of the conversion apparatus includes: and erecting a portal frame on the top of the support bridge system and the second jig frame, and penetrating the portal frame through the adjacent web members.
According to some embodiments of the invention, the step of constructing the portal comprises: and arranging a cross beam and an upright column, installing the upright column at the top of the supporting bridge system, and respectively installing two ends of the cross beam at the tops of the upright column and the second jig frame to form the portal frame.
According to some embodiments of the invention, the step of constructing the conversion device further comprises: and after the portal frame is erected, a connecting beam is arranged between the portal frame and the top bridge system.
According to some embodiments of the invention, the step of constructing the upper bridge further comprises: and after the web members are installed on the supporting bridge system, the top layer bridge system is laid on the top of the conversion device, and the top layer bridge system is connected with the web members.
According to some embodiments of the invention, the top level bridge system constructing step comprises: and installing an upper chord on the top of the web member, and installing a top deck on the upper chord to form the top deck bridge system.
According to some embodiments of the invention, the web member is mounted at the time of or after the installation of the conversion means.
According to a second aspect of the present invention, a multi-deck bridge construction support system for bridge construction having a bottom deck and a top deck having M decks is provided, comprising:
a first bed jig for supporting the bottom bridge system;
the second jig frame is positioned on the outer side of the support bridge system;
the conversion device is erected at the tops of the second jig frame and the supporting bridge system and is used for supporting the top bridge system;
wherein M is more than or equal to 1; when M is 1, the supporting bridge system is the bottom bridge system, and when M is more than 1, the supporting bridge system of the M-th layer is the top bridge system of the M-1-th layer.
The multilayer bridge construction supporting system provided by the embodiment of the invention at least has the following beneficial effects:
according to the multilayer bridge construction supporting system disclosed by the embodiment of the invention, the conversion device can support the laying of the top bridge system, the construction of the upper bridge system does not need to depend on the installation of the web members, the top bridge system can be laid after the conversion device is erected, the construction efficiency is high, the structure of the supporting system is simpler, a larger field does not need to be occupied, the second jig frame cannot interfere with the web members, so that the supporting system can be suitable for the construction of various types of bridges, and the application range is wide.
According to some embodiments of the invention, the transfer device comprises a portal that can be erected on top of the support bridge system and the second jig frame, the portal being adapted to pass between adjacent web members of the multi-level bridge.
According to some embodiments of the invention, the conversion device further comprises an adjustment joint mounted on top of the gantry, the adjustment joint being for supporting the top level bridge.
According to some embodiments of the invention, the gantry comprises a column for mounting on top of the support bridge and a beam for connecting the column with top of the second jig frame.
According to some embodiments of the present invention, the conversion device further comprises a bottom beam and a top beam, the bottom beam and the top beam are respectively connected to two ends of the upright column, the bottom beam is used for being mounted on the supporting bridge system, and the top beam is connected with the cross beam.
According to some embodiments of the invention, a reinforcement is connected between the upright and the cross-beam.
According to some embodiments of the invention, a tie beam is arranged between the second moulding bed and the supporting bridge system and/or between the portal and the top bridge system.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
FIG. 1 is a schematic construction diagram of a multi-layer bridge construction method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an embodiment of the multi-layer bridge construction supporting system.
Reference numerals:
a first jig 100;
a bottom bridge system 200, a lower chord 210, a bottom bridge deck 220;
a second jig 300;
the conversion device 400, a portal frame 410, a cross beam 411, a vertical column 412, an adjusting joint 420, a bottom beam 430 and a top beam 440;
a top deck 500, upper chords 510, a top deck 520;
the web member 600.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is more than two, if there are first and second described for the purpose of distinguishing technical features, but not for indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," 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, the schematic representations of the terms used above do not necessarily refer 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.
One embodiment of the present invention provides a multi-layer bridge construction method, including a bottom bridge construction step and an upper bridge construction step, wherein the bottom bridge construction step includes: arranging a first jig frame 100, and paving a bottom bridge system 200 on the top of the first jig frame 100; the upper bridge construction step comprises: and arranging a second jig frame 300 on the outer side of the supporting bridge system, then erecting a conversion device 400 on the second jig frame 300 and the top of the supporting bridge system, and further laying a top bridge system 500 on the top of the conversion device 400. The conversion device 400 can provide a supporting function for the construction of the top bridge system 500, the installation of the upper bridge does not need to depend on the web member 600, the top bridge system 500 can be laid after the conversion device 400 is erected, and the construction efficiency is high; the second jig 300 is arranged at the outer side of the supporting bridge system, the conversion device 400 is arranged between the supporting bridge system and the second jig 300, and the second jig 300 and the web member 600 of the bridge can be prevented from colliding and interfering by supporting the top bridge system 500 through the conversion device 400, so that the construction method is suitable for the construction of the truss bridge with the vertical plates at two sides and the truss bridge with the two sides inclining outwards, and has a wide application range.
It should be noted that the construction steps of the upper bridge can be repeated for N times, wherein N is more than or equal to 1; when N is 1, only one layer of upper layer bridge system is provided, and the supporting bridge system in the upper layer bridge system construction step is the bottom layer bridge system 200; when N is more than 1, the multilayer bridge has at least three layers, and when the Nth upper bridge system construction is carried out, the supporting bridge system in the construction step is the top bridge system 500 in the Nth-1 th upper bridge system construction. Therefore, the top bridge system 500 in the previous upper bridge construction step can provide a supporting foundation for the top bridge system 500 construction in the next upper bridge construction step, the cyclic construction of the multilayer bridge is realized, and the structural strength and the construction efficiency of the multilayer bridge can be ensured.
Therefore, in the multi-layer bridge construction method in the embodiment of the invention, the conversion device 400 is arranged to support the laying of the top bridge system 500, the construction of the upper bridge does not depend on the installation of the web members 600, the top bridge system 500 can be laid after the conversion device 400 is erected, the construction efficiency is high, the required jig frame and support system are simple, a large field is not occupied, and the second jig frame 300 does not interfere with the web members 600, so that the construction method can be suitable for the construction of various types of bridges, and the application range is wide.
Specifically, the bottom layer bridge construction step comprises: the lower chord 210 is hoisted to the top of the first jig 100 and installed, the first jig 100 supports the lower chord 210, then the bottom deck 220 is hoisted to the operation surface of the lower chord 210, and the bottom deck 220 and the lower chord 210 are installed and fixed. The bottom deck 220 may be a deck slab formed by pouring concrete through a steel formwork, a partitioned roadway slab or an integral deck steel plate, and the deck steel plate or the roadway slab may be assembled by welding and then combined and fixed with the lower chord 210.
In addition, the first jig 100 needs to be assembled and installed according to the actual elevation and the plane position of the lower chord 210 before installation, the verticality and the flatness of the top of the first jig 100 meet the installation requirements, and the verticality and the flatness of the top of the first jig 100 are matched with the installation height of the lower chord 210. The first jig frame 100 can be assembled in a manner of assembling standard knots step by step, so that the assembly efficiency of the first jig frame 100 can be improved; the bottom of the first jig 100 is provided with a jig base, so that the structural stability of the first jig 100 is ensured, the first jig 100 is prevented from inclining or shaking, the top of the first jig 100 is provided with an adjusting joint 420, the height of the adjusting joint 420 can be adjusted, and the adjusting joint 420 can be finely adjusted in the construction process so as to facilitate the installation of the bottom deck 220 and the splicing of the bottom decks 220 of different sections; the adjustment joint 420 may be a multi-layered steel backing plate that is detachable from each other.
It should be noted that the whole construction of the bridge adopts a sectional construction method, and the bridge can be installed in a sectional manner from two sides to a span, so that the construction efficiency is high; in addition, the construction of the bottom bridges of different sections does not influence the construction of the upper bridges of other sections, so that the bottom bridges and the upper bridges of different sections can be constructed simultaneously, and the construction efficiency of the bridges can be effectively improved; in addition, the bottom layer bridge and the upper layer bridge in the same section are constructed in a layered mode, large-scale hoisting machinery is not needed, and construction cost is low.
In one embodiment of the present invention, the upper bridge constructing step includes: the second jig frame 300 is arranged on the outer side of the supporting bridge system, the second jig frame 300 can be assembled in a mode of assembling standard knots step by step, the top of the second jig frame 300 can be also provided with an adjusting knot 420 for height adjustment, and after the second jig frame 300 is assembled and installed, the perpendicularity and the top flatness of the second jig frame 300 need to be measured and corrected to ensure the construction precision; the bottom mountable bed-jig base of second bed-jig 300 sets up the bed-jig base and can guarantee that second bed-jig 300 is stably installed subaerial, avoids second bed-jig 300 to heel.
Referring to fig. 1 and 2, in one embodiment of the present invention, the converting apparatus 400 is constructed by: after the second jig frame 300 is installed, the portal frame 410 is erected on the top of the second jig frame 300 and the supporting bridge system, so that the portal frame 410 can penetrate between the two web members 600, the defect that the second jig frame 300 directly supports the upper bridge system and interferes with the web members 600 is overcome, the web members 600 and the portal frame 410 can be installed at the same time, the construction of the top bridge system 500 does not depend on the installation accuracy of the web members 600, in addition, the portal frame 410 can penetrate between the web members 600, the installation requirements of the upper bridge system with different widths can be met by adjusting the length of the portal frame 410, and therefore the outer side of the bridge can be set to be vertical or inclined (the construction schematic diagram of a double-layer bridge is shown in fig. 1, and the bridge is inclined), the construction is flexible, and the application range is wide.
Specifically, the construction steps of the portal frame 410 include: hoisting the cross beam 411 and the upright column 412 to the upper part of the supporting bridge system, vertically installing the upright column 412 at the top part of the supporting bridge system, then installing and fixing the two ends of the cross beam 411 with the top part of the upright column 412 and the top part of the second jig frame 300 respectively, and combining the upright column 412 and the cross beam 411 to form the portal frame 410 for supporting the top-layer bridge system 500. The top plane of the vertical column 412 is flush with the top plane of the second jig frame 300, so as to ensure that the cross beam 411 is installed on the tops of the two in a horizontal state, and provide an accurate installation reference for installing the top-level bridge system 500. In order to ensure the structural strength of the portal frame 410, after the upright column 412 and the cross beam 411 are installed, a reinforcing member is installed between the upright column 412 and the cross beam 411, and the reinforcing member can be made of section steel and installed in an inclined strut mode.
In other embodiments, after the installation of the gantry 410 is completed, an adjusting joint 420 is installed on the top of the gantry 410, the adjusting joint 420 may be a pipe member or a combination of a pipe member and a steel plate, and the upper plane height of the adjusting joint 420 is changed by replacing the number of the pipe member or the steel plate, so as to facilitate the installation and mutual assembly of the upper-layer bridge system.
In order to ensure the structural stability of the second jig frame 300, a connecting beam can be installed between the second jig frame 300 and the supporting bridge system after the second jig frame 300 is installed, the second jig frame 300 and the supporting bridge system are combined to form a stressed whole, the second jig frame 300 can be prevented from shaking, and the stability in the bridge construction process can be ensured.
In one embodiment of the present invention, after the bottom-layer bridge system 200 is installed, the web members 600 are installed on the bottom-layer bridge system 200, and the top-layer bridge system 500 is laid on top of the web members 600, so that the top-layer bridge system 500 and the bottom-layer bridge system 200 are combined by the web members 600 to form an integrated bridge structure. It should be noted that the construction of the web member 600 and the conversion apparatus 400 may be performed alternately, that is, the installation of the web member 600 may be performed before, during or after the installation of the conversion apparatus 400, and the installation time of the two may be overlapped to shorten the construction period.
It should be noted that, a base for mounting the web member 600 may be disposed on the lower chord 210, and the web member 600 may be directly mounted on the base, so as to facilitate alignment, mounting, and fixing of the web member 600 and the lower chord 210, and improve convenience of construction.
In one embodiment of the present invention, the top deck bridge system 500 is constructed by the steps of: after the installation of the web members 600 with the conversion apparatus 400 is completed, the upper chords 510 are installed on the top of the web members 600, and the top deck 520 is installed on the upper chords 510 to form the top deck bridge 500. Specifically, in the installation process of the upper chord member 510, the upper chord member 510 is hoisted to the top of the conversion device 400, the adjusting joint 420 at the top of the portal 410 supports the upper chord member 510, and the conversion device 400 is a main bearing part for installing the top-layer bridge system 500, so that the phenomenon that the stress of the web member 600 is uneven or the upper chord member 510 is eccentrically collapsed due to the fact that the upper chord member 510 depends on the installation of the web member 600 and the center lines of the upper chord member and the web member are not coincident is avoided, and the construction risk is reduced; in addition, the upper chord member 510 is hung on the operation surface of the top bridge system 500 and then can be butted with the top of the web member 600, and after the upper chord member and the web member are installed and fixed, the bottom bridge and the upper bridge can be installed in a combined manner.
After the top chord 510 is installed, the top deck 520 is laid on the top chord 510. Specifically, the top deck 520 may be formed by casting concrete through segmented steel forms, or formed by splicing segmented roadway plates, or formed by using an integral deck steel plate, and the top deck 520 may be fixed to the upper chords 510 by welding or concrete casting.
In order to ensure the structural stability of the upper chord 510 after installation, a connecting beam may be installed between the gantry 410 and the upper chord 510 after the upper chord 510 is installed, and the connecting beam assists in supporting the upper chord 510, so as to ensure the stability of bridge construction.
After the construction of the upper layer bridge is finished, the auxiliary facilities on the bridge can be continuously installed, such as installing anti-collision guardrails, isolating guardrails between motor lanes and non-man lanes, non-man lane steps, setting road center lines and the like.
It should be noted that a pier is arranged below the bottom layer bridge, and the pier can be arranged right below the lower chord 210 to support the whole bridge. After the bridge is built, the first jig frame 100, the second step and the conversion device 400 for supporting can be detached for recycling.
Referring to fig. 1 and 2, the present invention also provides a multi-layer bridge construction supporting system, which can be applied to the construction process of a bridge having a bottom bridge system and an M-layer top bridge system. Specifically, the multi-layer bridge construction support system comprises a first jig 100, a second jig 300 and a conversion device 400, wherein the first jig 100 is used for supporting the bottom bridge system 200, the second jig 300 is arranged on the outer side of the support bridge system and used for supporting the conversion device 400, the conversion device 400 is erected on the tops of the second jig 300 and the support bridge system, and the conversion device 400 is used for supporting the top bridge system 500 so as to facilitate installation of the top bridge system 500. Wherein M is more than or equal to 1; when M is 1, the supporting system is used for the construction of a double-layer bridge, the supporting bridge system is a bottom bridge system 200, when M is more than 1, the bridge for which the supporting system is used for construction has at least three layers, and the supporting bridge system of the M layer is a top bridge system 500 of the M-1 layer, so that the top bridge system 500 in the previous upper bridge construction step can provide a supporting foundation for the top bridge system 500 construction in the next upper bridge construction step, and the supporting system can meet the circulating construction of a multi-layer bridge.
According to the multilayer bridge construction supporting system in the embodiment of the invention, the conversion device 400 is arranged to support the laying of the top bridge system 500, the construction of the upper layer bridge does not depend on the installation of the web member 600, the top bridge system 500 can be laid after the conversion device 400 is erected, the construction efficiency is high, the structure of the supporting system is simple, a large field is not occupied, the second jig frame 300 cannot interfere with the web member 600, and the supporting system can be suitable for the construction of various types of bridges and is wide in application range.
It should be noted that the web member 600 is installed between the bottom-layer bridge and the top-layer bridge, and the bottom-layer bridge and the top-layer bridge are combined to form a complete bridge through the connection of the web member 600. In one embodiment of the present invention, the conversion device 400 includes a portal 410, the portal 410 can be erected on the top of the second jig frame 300 and the support bridge system, and the portal 410 can pass through the adjacent web members 600, so as to avoid interference between the second jig frame 300, the conversion device 400 and the web members 600, and thus the support bridge system can be suitable for a two-side vertical plate type truss bridge or a two-side extroversion type truss bridge.
Specifically, the portal 410 includes a vertical column 412 and a cross beam 411, the vertical column 412 is used for being installed at the top of a supporting bridge system, the vertical column 412 supports the cross beam 411, two ends of the cross beam 411 are respectively connected with the top of the vertical column 412 and the top of the second jig frame 300, and the portal 410 is formed above the web member 600 through the combination of the vertical column 412 and the cross beam 411, so that the portal 410 avoids the web member 600. The column 412 may be a circular steel pipe, a section steel, or the like, and the beam 411 may be a section steel, a steel plate, or the like.
In an embodiment of the present invention, the conversion apparatus 400 further includes a bottom beam 430 and a top beam 440, the bottom beam 430 and the top beam 440 are respectively connected to two ends of the upright 412, the bottom beam 430 is configured to be mounted on a supporting bridge system, the bottom beam 430 is configured to increase a contact area between the upright 412 and the supporting bridge system, so as to avoid stress concentration at a connection location between the upright 412 and the supporting bridge system, the top beam 440 is configured to be connected to the cross beam 411, and the top beam 440 supports the cross beam 411, so as to avoid distortion and overturning of the gantry 410 due to inaccurate alignment between the cross beam 411 and the upright 412.
In addition, the top of the portal 410 is further provided with an adjusting joint 420, the adjusting joint 420 can be a steel round pipe or a combination of the steel round pipe and a steel gasket, and the height of the adjusting joint 420 can be changed by changing the length of the steel round pipe or the number of the steel gaskets, so that the conversion device 400 can adapt to the construction of top-layer bridge systems 500 with different heights, and the convenience of the construction of the top-layer bridge systems 500 is improved.
In order to ensure the structural stability of the upper bridge system after installation, a connecting beam (not shown) is further arranged between the portal frame 410 and the upper bridge system, and the connecting beam can be used for carrying out auxiliary support on the upper bridge system, so that the stability of bridge construction can be ensured. The connecting beam is also arranged between the second jig frame 300 and the supporting bridge system, the second jig frame 300 can be combined with the supporting bridge system to form a stressed whole, the second jig frame 300 can be prevented from shaking in the construction process, and the stability in the bridge construction process is ensured.
In one embodiment of the present invention, the gantry 410 further comprises a reinforcement member, both ends of which respectively connect the cross beam 411 and the upright 412, so as to improve the structural strength of the gantry 410, and enable the conversion apparatus 400 to provide stable support to the top deck bridge 500.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (16)
1. The multilayer bridge construction method is characterized by comprising the following steps:
constructing a bottom bridge: arranging a first jig frame, and paving a bottom bridge system on the top of the first jig frame;
constructing an upper bridge: arranging a second jig frame on the outer side of a supporting bridge system, erecting a conversion device on the second jig frame and the top of the supporting bridge system, and laying a top bridge system on the top of the conversion device;
wherein the construction step of the upper bridge is repeated for N times, and N is more than or equal to 1; and when N is 1, the supporting bridge system is the bottom bridge system, and when N is more than 1, the supporting bridge system in the upper-layer bridge construction for the Nth time is the top bridge system in the upper-layer bridge construction for the N-1 th time.
2. The multi-deck bridge construction method of claim 1, wherein the sub-deck bridge construction step further comprises: and installing a lower chord on the top of the first jig frame, and installing a bottom deck on the lower chord to form the bottom bridge system.
3. The method of constructing a multi-layered bridge as recited in claim 1, wherein the step of constructing the upper-layered bridge further comprises: and assembling standard knots step by step to form the second jig frame, and correcting after the first jig frame is installed and/or correcting after the second jig frame is installed.
4. The method of constructing a multi-layered bridge as recited in claim 1, wherein web members are installed on the supporting bridge system after the construction of the sub-layer bridge is completed, and the step of constructing the conversion means includes: and erecting a portal frame on the top of the support bridge system and the second jig frame, and penetrating the portal frame through the adjacent web members.
5. The multi-deck bridge construction method according to claim 4, wherein the construction step of the portal frame comprises: and arranging a cross beam and an upright column, installing the upright column at the top of the supporting bridge system, and respectively installing two ends of the cross beam at the tops of the upright column and the second jig frame to form the portal frame.
6. The multi-deck bridge construction method of claim 4, wherein the step of constructing the conversion means further comprises: and after the portal frame is erected, a connecting beam is arranged between the portal frame and the top bridge system.
7. The method of constructing a multi-layered bridge as recited in claim 1, wherein the step of constructing the upper-layered bridge further comprises: and after the web members are installed on the supporting bridge system, the top layer bridge system is laid on the top of the conversion device, and the top layer bridge system is connected with the web members.
8. The multi-deck bridge construction method of claim 7, wherein the top deck bridge system construction step comprises: and installing an upper chord on the top of the web member, and installing a top deck on the upper chord to form the top deck bridge system.
9. The multi-deck bridge construction method of claim 7, wherein the web members are installed at the time of installation of the conversion means or after completion of the installation of the conversion means.
10. Multilayer bridge construction braced system for the bridge construction of the top layer bridging that has bottom bridging and M layer, its characterized in that includes:
a first bed jig for supporting the bottom bridge system;
the second jig frame is positioned on the outer side of the support bridge system;
the conversion device is erected at the tops of the second jig frame and the supporting bridge system and is used for supporting the top bridge system;
wherein M is more than or equal to 1; when M is 1, the supporting bridge system is the bottom bridge system, and when M is more than 1, the supporting bridge system of the M-th layer is the top bridge system of the M-1-th layer.
11. The multi-deck bridge construction support system of claim 10, wherein said transition device comprises a portal that can be erected atop said support bridge system and said second jig frame, said portal being adapted to pass between adjacent web members of said multi-deck bridge.
12. The multi-deck bridge construction support system of claim 11, wherein the transition device further comprises an adjustment joint mounted on top of the gantry, the adjustment joint configured to support the top deck bridge system.
13. The multi-deck bridge construction support system of claim 11, wherein the mast comprises a column for mounting to a top of the support bridge system and a beam for connecting the column to a top of the second jig frame.
14. The multi-deck bridge construction support system of claim 13, wherein the conversion device further comprises a bottom beam and a top beam, the bottom beam and the top beam are respectively connected to two ends of the upright column, the bottom beam is used for being mounted on the support bridge system, and the top beam is connected with the cross beam.
15. The multi-deck bridge construction support system of claim 13, wherein a reinforcement is connected between the columns and the beams.
16. The multi-deck bridge construction support system of claim 11, wherein a tie beam is disposed between the second jig frame and the support bridge system and/or between the portal frame and the top bridge system.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011228871.0A CN112502043A (en) | 2020-11-06 | 2020-11-06 | Multilayer bridge construction method and construction support system |
| PCT/CN2021/119892 WO2022095618A1 (en) | 2020-11-06 | 2021-09-23 | Multi-layer bridge construction method and construction supporting system |
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| WO2022095618A1 (en) * | 2020-11-06 | 2022-05-12 | 中建科工集团有限公司 | Multi-layer bridge construction method and construction supporting system |
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| JP4928341B2 (en) * | 2007-04-27 | 2012-05-09 | 株式会社ピーエス三菱 | Construction method of truss bridge |
| CN103147405B (en) * | 2013-04-03 | 2015-04-29 | 中铁大桥局股份有限公司 | Method for erecting steel girder of cable-stayed bridge with diagonal main trusses |
| CN110184926A (en) * | 2019-05-14 | 2019-08-30 | 宁波市政工程建设集团股份有限公司 | A kind of public affairs rail is built together the overhead pier stud construction method of double-layer integrallyization |
| CN214459642U (en) * | 2020-11-06 | 2021-10-22 | 中建科工集团有限公司 | Multilayer bridge construction support system |
| CN112502043A (en) * | 2020-11-06 | 2021-03-16 | 中建科工集团有限公司 | Multilayer bridge construction method and construction support system |
| CN112921813B (en) * | 2021-01-25 | 2022-06-21 | 中建科工集团有限公司 | Double-layer multi-span bridge construction method |
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| WO2022095618A1 (en) * | 2020-11-06 | 2022-05-12 | 中建科工集团有限公司 | Multi-layer bridge construction method and construction supporting system |
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