CN116219905B - Multifunctional hanging integrated machine and construction method thereof - Google Patents
Multifunctional hanging integrated machine and construction method thereof Download PDFInfo
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- CN116219905B CN116219905B CN202310142507.XA CN202310142507A CN116219905B CN 116219905 B CN116219905 B CN 116219905B CN 202310142507 A CN202310142507 A CN 202310142507A CN 116219905 B CN116219905 B CN 116219905B
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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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Abstract
The invention relates to a multifunctional hanging integrated machine and a construction method, wherein the hanging integrated machine comprises a plurality of adjustable diamond frames, a track arranged on the top of a cast-in-situ block, a sliding support arranged on the diamond frames, a driving piece arranged on the track, a middle portal frame for supporting and connecting the two diamond frames, an upper cross beam for supporting and connecting the two diamond frames, a first hanging strip vertically arranged and connected with the middle portal frame, a second hanging strip vertically arranged and connected with the upper cross beam, guide beams connected with the first hanging strip and the second hanging strip, a lower operation platform connected with the bottoms of the first hanging strip and the second hanging strip, a bridge cast-in-situ section connected with the cast-in-situ block through the guide beams and the lower operation platform, and a lifting structure capable of being arranged on the upper cross beam for lifting a reinforced concrete combination section and a steel box girder to be connected with the bridge cast-in-situ section, thereby completing bridge construction. The invention realizes the integration and unification of tools and equipment required by the continuous rigid frame bridge of the hybrid beam, thereby not only improving the construction efficiency, but also reducing the construction cost.
Description
Technical Field
The invention relates to the field of bridge construction engineering, in particular to a multifunctional hanging integrated machine and a construction method thereof.
Background
The hybrid beam continuous rigid frame bridge is a common bridge type in a large-span bridge, and has the advantages of strong spanning capability, simple stress state, high construction speed and the like. The main construction process of the continuous rigid frame bridge of the hybrid beam comprises a plurality of important steps of formwork support, reinforcement binding, concrete pouring and vibrating, precast steel beam hoisting and the like. Based on the design thought, stress characteristics and development of construction technology and equipment of the continuous rigid frame bridge of the hybrid beam, the type of the bridge adopts a cantilever pouring method, namely, a bracket or a full framing is firstly adopted for pouring No. 0 concrete on site, then, specially designed tools are adopted for pouring the concrete on site along two sides of a pier symmetrically section by section, after the concrete reaches the required strength, the prestressed tendons are tensioned, the construction machine and the template move forwards, the circulation is carried out until the construction of the cantilever pouring section is completed, and finally, a bridge deck crane is adopted for hoisting the steel-concrete combination section and the integral steel box girder section, so that the full bridge construction is completed. At present, a cantilever casting is carried out by adopting a hanging basket in the construction tool of the concrete cantilever section of the continuous rigid frame bridge, so the construction tool is also called a hanging basket cantilever construction method. The cantilever pouring method has the advantages of no need of heavy-duty transportation equipment, construction site saving, small influence on the lower part of the bridge, repeated use of the template, steel consumption saving, timely adjustment of the bridge alignment, guaranteed construction quality and the like.
The existing cantilever pouring method needs to use a bracket or a full framing when pouring the No. 0 concrete, needs to use a movable bracket to match with a hanging basket when pouring the concrete section by section, needs to use a bridge deck crane when hoisting a steel-concrete combined section and an integral steel box girder section, so that the bracket or the full framing needs to be installed when pouring the No. 0 concrete, needs to be dismantled after construction, needs to install the movable bracket and the hanging basket when pouring the concrete section by section, and needs to install the bridge deck crane when hoisting the steel-concrete combined section and the integral steel box girder, and then needs to dismantle the bridge deck crane after finishing. The cantilever pouring method also has the defect of high construction cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a multifunctional hanging integrated machine and a construction method thereof, and solves the problems of multiple equipment types, single function, long time consumption of assembly and disassembly operations, complex operation, high construction cost and the like in the construction of the existing cantilever pouring method.
The technical scheme for achieving the purpose is as follows:
The invention provides a multifunctional hanging integrated machine, which is used for constructing a bridge above a pier, and comprises:
The adjustable diamond frames can be arranged on two sides of the bridge pier, and cast-in-situ formwork supporting surfaces are formed on the diamond frames so as to cast-in-situ blocks on the bridge pier;
The track is arranged at the top of the cast-in-situ block;
the sliding support is arranged on the diamond frame and can be used for sliding the diamond frame on the track;
The driving piece is arranged on the track and connected with the corresponding sliding support so as to drive the sliding support to move along the track;
A middle door frame which is connected with the diamond frames on the two rails in a sliding way;
An upper cross beam which is connected with the overhanging ends of the diamond frames arranged on the two rails in a sliding way is supported;
The first hanging strip is vertically arranged and connected with the middle door frame;
The second suspender is vertically arranged and connected with the upper cross beam;
The guide beam is connected to the first suspender and the second suspender and is arranged close to the top of the cast-in-situ block;
The lower operation platform is connected to the bottoms of the first suspender and the second suspender and is close to the bottom of the cast-in-situ block;
and the lifting structure can be arranged on the upper cross beam so as to lift the steel-concrete combined section and the steel box girder to be connected with the bridge cast-in-situ section, thereby completing bridge construction.
The multifunctional hanging integrated machine provided by the invention realizes integration and unification of tools and equipment required by the continuous rigid frame bridge of the hybrid beam, not only can improve the construction efficiency, but also can reduce the entrance and exit, mounting and dismounting and use cost of various large-scale construction equipment in the construction process, thereby reducing the construction cost. The main body of the multifunctional hanging integrated machine is a diamond frame, the diamond frame can be used as a template bracket of a cast-in-situ block when the cast-in-situ block is constructed, the diamond frame is connected with a middle door frame and an upper beam when the cast-in-situ block of a bridge is constructed, a hanging basket walking on the bridge can be formed, the construction of the cast-in-situ block of the bridge is met, the diamond frame, the middle door frame and the upper beam can be used as a basis of a lifting structure when the steel-concrete combined section and the steel box beam are lifted, the construction of the steel-concrete combined section and the steel box beam is completed, and the problems of complex tool equipment, multiple types and single function in the construction of the existing cantilever pouring method are solved.
The invention further improves the multifunctional hanging integrated machine in that the diamond frame comprises an adjusting rod, a fixed rod, a web member, an adjustable inclined rod and a fixed inclined rod;
the adjusting rod and the fixing rod are arranged in parallel, one end parts of the adjusting rod and the fixing rod are correspondingly arranged, and the other end parts are far away from each other;
the web member support is connected between the adjusting rod and the corresponding end part of the fixed rod;
One end of the adjustable inclined rod is rotatably connected to the end part of the fixed rod, which is connected with the web member, and the other end of the adjustable inclined rod is rotatably connected to the end part of the adjusting rod, which is far away from the web member;
One end of the fixed inclined rod is connected to the end part of the adjusting rod, which is connected with the web member, and the other end of the fixed inclined rod is connected to the end part of the fixed rod, which is far away from the web member;
the end part of the adjusting rod, which is connected with the adjustable inclined rod, is also provided with a plurality of adjusting holes.
The multifunctional hanging integrated machine is further improved in that the multifunctional hanging integrated machine further comprises a sensor arranged on the driving piece and a control system in control connection with the driving piece;
The sensor is used for detecting the driving stroke of the driving piece;
the control system is connected with the sensor and is used for controlling the operation of the driving piece according to the driving stroke detected by the sensor so as to realize deviation correction on the movement of the two diamond frames.
The multifunctional hanging integrated machine is further improved in that the hanging structure comprises a crane jack arranged on the upper cross beam, a guide frame arranged on the upper cross beam, a hanging frame connected with a steel strand which bypasses the guide frame and passes through the crane jack and a hanging tool connected with the hanging frame.
The invention also provides a construction method of the multifunctional hanging integrated machine, which comprises the following steps:
Adjusting the diamond frame according to a design inclined plane at the bottom of the bridge;
arranging a plurality of diamond frames on the side part of the bridge pier;
setting a template on the diamond frame and applying cast-in-situ blocks;
Removing the set templates and the diamond-shaped frames after the cast-in-situ block is formed;
arranging a track on the top of the cast-in-situ block;
The two diamond frames are connected together through a middle portal and an upper cross beam, the middle portal support is connected between the middle parts of the two diamond frames, and the upper cross beam support is connected between the end parts of the two diamond frames;
A sliding support is arranged on one side of the diamond frame far away from the upper beam, and is arranged on a corresponding track in a sliding manner, so that the upper beam connected to the diamond frame is overhung to the outer side of the cast-in-situ block;
A driving piece is arranged on the track and is connected with a corresponding sliding support to drive the sliding support to move along the track;
a first hanging strip which is vertical is arranged on the middle portal frame;
a second hanging strip which is vertical is connected to the upper cross beam;
a guide beam arranged close to the top of the cast-in-situ block is connected to the first suspender and the second suspender;
the bottoms of the first hanging strip and the second hanging strip are connected with a lower operation platform which is arranged close to the bottom of the cast-in-situ block;
The bridge cast-in-place section connected with the cast-in-place block is manufactured section by section through the guide beam and the lower operation platform, and the positions of the guide beam and the lower operation platform are adjusted by moving and adjusting the diamond frame and the track forwards in the construction process of the bridge cast-in-place section so as to meet the requirement of constructing the bridge cast-in-place section by section;
After the construction of the bridge cast-in-situ section is completed, a lifting structure is arranged on the upper cross beam, the steel-concrete combined section and the steel box girder are lifted by the lifting structure, the steel-concrete combined section is connected with the bridge cast-in-situ section, and the steel box girder is connected with the steel-concrete combined section, so that the construction of the bridge is completed.
The construction method is further improved in that when the diamond frame is arranged at the side part of the bridge pier, embedded parts are arranged at the side part of the bridge pier, and split bolts are arranged between the oppositely arranged embedded parts for connection and fixation;
and detachably connecting the diamond frame with the corresponding embedded part.
The construction method is further improved in that when the driving piece drives the corresponding diamond frame to move, travel data of the diamond frame are obtained;
and calculating the stroke deviation based on the stroke data of the two diamond frames, and controlling the next driving stroke of the driving piece according to the calculated formed deviation so as to realize deviation correction.
The construction method is further improved in that when constructing the cast-in-situ section of the bridge, upper operation platforms are arranged on the two diamond frames;
And arranging hanging baskets at the end sides of the upper working platform and the lower working platform, and using the upper working platform and the hanging baskets to construct a bridge cast-in-situ section.
The construction method is further improved in that the guide beam is fixedly connected to the bridge cast-in-situ section when the bridge cast-in-situ section close to the position of the reinforced concrete joint section is constructed;
Hanging the lower operation platform on the guide beam;
and removing the first hanging strip and the second hanging strip so as to facilitate hoisting of the reinforced concrete joint section.
The construction method is further improved in that two diamond frames are additionally arranged at the bottom of the upper cross beam before the steel box girder is hoisted, and corresponding tracks, sliding supports and driving pieces are arranged at the bottoms of the arranged diamond frames.
Drawings
FIG. 1 is a schematic view of the diamond frame of the multifunctional hanging integrated machine.
FIG. 2 is a schematic diagram of a construction of a template bracket of the multifunctional hanging integrated machine as a cast-in-situ block according to the present invention.
Fig. 3 is a schematic structural view of a hanging basket of the multifunctional hanging integrated machine as a construction of a bridge cast-in-situ section.
Fig. 4 is a partially enlarged schematic view at A1 in fig. 3.
Fig. 5 is a partially enlarged schematic view at A2 in fig. 3.
Fig. 6 is a partially enlarged schematic view at A3 in fig. 3.
Fig. 7 is a partially enlarged schematic view of fig. 3 at A4.
FIG. 8 is a schematic diagram of the automatic deviation rectifying control system and driving part of the multifunctional hanging integrated machine.
FIG. 9 is a schematic structural view of a crane with a multifunctional hanging integrated machine as a reinforced concrete joint section.
Fig. 10 is a front view of the structure shown in fig. 9.
Fig. 11 is a schematic structural view of temporary fixation after the steel-concrete joint section is hoisted in place.
FIG. 12 is a schematic view of a multi-functional hanging integrated machine of the present invention as a crane for a steel box girder.
Fig. 13 is a front view of the structure shown in fig. 12.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
Referring to fig. 1, the invention provides a multifunctional hanging integrated machine and a construction method thereof, which are used for integrating various functions and equipment such as a template bracket of a cast-in-situ block required by a continuous rigid frame bridge of a hybrid beam, a hanging basket of a cast-in-situ section of the bridge, a reinforced concrete combination section, a light and heavy crane of a steel box beam and the like, thereby realizing the unified design of construction equipment and tools and overcoming the defects of complex equipment, single equipment function and high construction cost of the traditional continuous rigid frame bridge tool equipment of the hybrid beam. The multifunctional hanging integrated machine and the construction method thereof are described below with reference to the accompanying drawings.
Referring to FIG. 1, a schematic diagram of a diamond-shaped frame in a multifunctional hanging integrated machine according to the present invention is shown. Referring to fig. 2, a schematic structural diagram of a template bracket of the multifunctional hanging integrated machine as a cast-in-situ block according to the present invention is shown. Referring to fig. 3, a schematic structural diagram of the hanging basket of the multifunctional hanging integrated machine for construction of a bridge cast-in-situ section is shown. The multifunctional hanging integrated machine of the present invention will be described with reference to fig. 1 to 3.
As shown in fig. 1 to 3, the multifunctional hanging integrated machine of the present invention is used for constructing a bridge on piers 10, the bridge is a hybrid beam, and comprises a concrete cast-in-situ structure and a steel structure, the constructed bridge spans two piers 10, and the multifunctional hanging integrated machine of the present invention comprises a diamond frame 21, a track 231, a sliding support 232, a driving member, a middle portal 221, an upper beam 222, a first hanging strip 223, a second hanging strip 224, a guide beam 24, a second hanging strip, The bridge cast-in-situ slab comprises a lower operation platform 25 and a lifting structure, a plurality of diamond frames 21, a track 231 and bridge cast-in-situ sections, wherein the diamond frames 21 are of an adjustable structure, the diamond frames 21 can be arranged on two sides of a pier 10, cast-in-situ formwork supporting surfaces are formed on the diamond frames 21 to form cast-in-situ blocks 121 by casting on the pier 10, the diamond frames 21 serve as formwork brackets of the cast-in-situ blocks 121 at the moment, the track 231 is arranged on the top of the cast-in-situ blocks 121, after the cast-in-situ blocks 121 are constructed, the bridge cast-in-situ sections are required to be constructed in the side span and the mid span directions on two sides of the cast-in-situ blocks 121, and the track 231 is paved on two sides of the top of the cast-in-situ blocks 121 and is used for constructing bridge cast-in-situ sections in the corresponding directions. The sliding support 232 is mounted on the diamond 21, and the diamond 21 can be slidably arranged on the rail 231 through the sliding support 232. As shown in connection with fig. 3 and 5, a driving member 281 is provided on the rail 231, and the driving member 281 is connected to a corresponding sliding support 232 for driving the sliding support 232 to move along the rail, thereby realizing pushing of the diamond 21 to move along the rail. As shown in fig. 3 and 10, the middle frame 221 is supported and connected to the diamond-shaped frame 21 slidably disposed on the two rails 231, and the upper beam 222 is supported and connected to the overhanging ends of the diamond-shaped frame 21 slidably disposed on the two rails 231. Two rails 231 are arranged on the side of the side span and the side of the middle span of the top of the cast-in-situ block 121, a diamond-shaped frame 21 is arranged on each rail 231 in a sliding mode, and the two diamond-shaped frames 21 are connected together through the arranged middle door frame 221 and the upper cross beam 222 to form a frame body capable of moving and adjusting the top of the cast-in-situ block 121. The first suspender 223 is vertically arranged and connected with the middle door frame 221, the second suspender 224 is vertically arranged and connected with the upper beam 222, and the first suspender 223 and the second suspender 224 are vertically arranged and extend to the bottom of the cast-in-situ block 121. The guide beam 24 is connected to the upper parts of the first hanging strip 223 and the second hanging strip 224 and is arranged near the top of the cast-in-place block 121, the lower operation platform 25 is connected to the bottoms of the first hanging strip 223 and the second hanging strip 224 and is arranged near the bottom of the cast-in-place block 121, the bridge cast-in-place section 122 connected with the cast-in-place block 121 is constructed through the guide beam 24 and the lower operation platform 25, the bridge cast-in-place section 122 adopts a piecewise construction mode, firstly, the cast-in-place block 121 is taken as a foundation, side spans and middle spans arranged on the cast-in-place block 121 are taken as main supporting structures, the guide beam 24 and the lower operation platform 25 are hung, the guide beam 24 and the lower operation platform 25 provide construction platforms for using the bridge cast-in-place section 122, a new track is arranged on the No. 1 bridge cast-in-place section after the No. 1 bridge cast-in-place section is poured, and then the diamond frames are moved forwards to continue the construction of the next bridge cast-in-place section. After the bridge cast-in-situ section 122 is constructed, as shown in fig. 9 and 10, a lifting structure 29 can be arranged on the upper beam 222, and the steel-concrete combined section 123 and the steel box girder are lifted by the lifting structure 29 to be connected with the bridge cast-in-situ section 122, so that the construction of the bridge is completed.
The multifunctional hanging integrated machine takes the diamond frame as a main body, integrates and unifies equipment required by each stage of bridge construction, improves turnover rate and utilization rate of components in bridge construction, reduces the entrance and exit, mounting and dismounting and use cost of various large-scale construction equipment in the construction process, can reduce construction cost, improves construction efficiency, and well solves the problems of complex tooling equipment, multiple types and single function existing in the construction of the existing cantilever pouring method.
In one embodiment of the present invention, as shown in fig. 1, the diamond 21 includes an adjusting lever 211, a fixing lever 212, a web member 213, an adjustable diagonal member 214, and a fixing diagonal member 215;
Wherein, the adjusting rod 211 and the fixed rod 212 are arranged in parallel, one end parts of the adjusting rod 211 and the fixed rod 212 are correspondingly arranged, and the other end parts are far away from each other;
the web member 213 is supportedly connected between the corresponding ends of the adjustment lever 211 and the fixing lever 212;
One end of the adjustable inclined rod 214 is rotatably connected with the end part of the fixed rod 212, which is connected with the web member 213, and the other end of the adjustable inclined rod 214 is rotatably connected with the end part of the adjusting rod 211, which is far away from the web member 213;
One end of the fixed diagonal member 215 is connected to the end of the adjustment lever 211 connected to the web member 213, and the other end of the fixed diagonal member 215 is connected to the end of the fixed rod 212 remote from the web member 213;
the end of the adjusting lever 211 connected to the adjustable diagonal lever 214 is also provided with a plurality of adjusting holes 216.
The shape of the adjusting diamond 21 is realized by selectively connecting the adjustable inclined rod 214 and the corresponding adjusting hole 216 on the adjusting rod 211 so as to meet the use requirements of different functions.
Further, the diamond 21 is provided with a gusset 217 at each node, and the ends of the adjusting lever 211, the fixing lever 212, the web member 213, the adjustable diagonal lever 214, and the fixing diagonal lever 215 are all connected to the corresponding gusset 217.
In one embodiment of the present invention, as shown in fig. 2, the inclination of the adjustable diagonal rods 214 on the diamond-shaped frame 21 is adjusted so that the inclination of the adjustable diagonal rods 214 is consistent with the inclination of the bottom interface of the cast-in-place block 121 when the cast-in-place block 121 is constructed. The embedded parts 111 are arranged on the side parts of the bridge pier 10, the embedded parts 111 are used for being connected with the diamond-shaped frames 21, the embedded parts 111 on the two sides of the bridge pier 10 are oppositely arranged, and split bolts 112 are connected between the two oppositely arranged embedded parts 111 in a pulling mode, and the structural strength of the embedded parts 111 can be improved through the arrangement of the split bolts 112. The fixed rod 212 of the diamond 21 is fixedly connected to the embedded part 111 of the pier 10, and the adjustable diagonal rod 214 is used for supporting and connecting a template for construction of the cast-in-situ block 121. Two diamond frames 21 are respectively arranged on two sides of the bridge pier 10, the diamond frames 21 are used for providing support for templates, templates on the other two sides of the cast-in-situ block 121 can be directly erected on the bridge pier, or back ridges are arranged on the diamond frames 21, the side parts of the back ridges extending out of the bridge pier 10 form protruding ends, cross beams are arranged on the protruding ends, and the corresponding templates are erected by the cross beams.
At the moment, the rhombic frame is assembled to form a template bracket for construction of cast-in-situ blocks, and the first function of the hanging integrated machine is the bracket function.
In a specific embodiment of the present invention, as shown in fig. 3,5 and 8, the present invention further includes a sensor disposed on the driving element 281 and a control system 30 in control connection with the driving element 281, where the sensor is used to detect a driving stroke of the driving element 281, and the control system 30 is connected with the sensor and is used to control the operation of the driving element 281 according to the driving stroke detected by the sensor, so as to implement deviation correction for movement of two diamond frames.
The movement of the two diamond frames positioned on one side of the middle span is synchronous, and likewise, the movement of the two diamond frames positioned on one side of the side span is synchronous, the stroke data of each diamond frame are detected through the arranged sensor, and then the next advancing of the diamond frame is controlled according to the actual forward advancing value of the diamond frame, so that automatic deviation correction is realized.
Specifically, as shown in fig. 10, the diamond frames 21 on the left and right sides are respectively driven by driving members respectively connected, the control system controls the diamond frames 21 on the left and right sides to synchronously push forward, a stroke theoretical value is 25±2cm, in each pushing stroke, a sensor connected to the driving member measures the actual value of forward advancing, data is fed back to the control system, the control system calculates the advancing deviation on both sides, then automatic adjustment and correction are carried out in the next stroke, the synchronization of the walking of the diamond frames on both sides is ensured, the walking correction is realized until the designed position is reached, and casting of the cast-in-situ section of the bridge is carried out. According to the mode, the cast-in-place section of the bridge is cast section by section, and the prestressed tendons are tensioned until the concrete of the cast-in-place section of the bridge is cast completely. For example, in the previous stroke, the left driving piece is pushed forward to walk 25+1=26 cm (wherein 25cm is a theoretical value of 1cm and is an error caused by the influence of various factors such as control precision, oil pressure and a measuring sensor, and the like, and the right driving piece is pushed forward to walk 25-2=23 cm (wherein 25cm is a theoretical value of 2cm and is an error caused by the influence of various factors such as control precision, oil pressure and a measuring sensor, and the like, and the actual walking is 23 cm), and in the previous stroke, the accumulated stroke difference of the left side and the right side is-1 cm, the control system calculates the accumulated deviation of the left side and the right side in the previous stroke to be 26-23-1=2 cm, and in the next jacking stroke, the control system automatically sends a command to enable the left side to advance 24cm, the right side to advance 26cm, so as to realize the advancing deviation correction, and in the jacking stroke, the sensor continuously measures the actual value of the left side and the right side of the previous stroke, and feeds back to the control system, and the control system calculates the accumulated deviation (due to the influence of the control precision, the oil pressure, the measuring sensor and the like, always ensures that the accumulated deviation of the two limbs always reach a certain circulating position in the previous stroke within a certain range, if the accumulated deviation is always within a certain circulating position.
Further, the slide rail further includes a reaction force piece 282 provided on the rail 231, the reaction force piece 282 is connected to the driving piece 281, a connection piece 283 is connected to the front end of the driving piece 281, and the connection piece 283 is connected to the slide holder 232. Preferably, the driving member is a hydraulic jack.
Still further, as shown in fig. 3 and 5, in order to ensure the structural stability of the diamond frame 21, an anti-overturning structure 234 is provided at the rear portion of the diamond frame 21, the anti-overturning structure 234 is connected to the adjusting rod 211 of the diamond frame 21, after the diamond frame 21 moves in place, the other end of the anti-overturning structure 234 is connected to the rail 231, and the diamond frame 21 is fixedly connected to the rail 231 by the anti-overturning structure 234, so that the anti-overturning effect on the diamond frame 21 can be achieved, and the operation safety can be improved. The rear part of the diamond-shaped frame 21 refers to one side of the diamond-shaped frame 21 away from the construction position of the cast-in-situ section of the bridge. Preferably, the anti-overturning structure 234 is a steel plate, one end of the steel plate is rotatably connected to the adjusting rod 211 of the diamond frame 21, the other end of the steel plate is detachably connected with the rail 231 through bolts, when the diamond frame 21 needs to be moved, the connection between the steel plate and the rail is released, and after the diamond frame moves in place, the steel plate is connected with the rail.
The rails 231 are laid on the cast-in-situ block 121 or the bridge cast-in-situ section 122 through steel sleeper, in order to improve the structural stability of the rails 231, rear anchor beams 235 are arranged at the rear parts of the rails 231, the rear anchor beams 235 are pressed on the two rails 231, and are connected with the cast-in-situ block 121 or the bridge cast-in-situ section 122 in an anchoring manner through anchor bolts driven into the cast-in-situ block 121 or the bridge cast-in-situ section 122.
A traveling hanger 233 is further provided at the bottom of the adjusting lever 211 of the diamond-shaped frame 21, and a reverse buckling wheel is provided at the bottom of the planet hanger 233 and is slidably provided in the rail 231.
Still further, as shown in fig. 3, 6 and 7, the lower work platform 25 includes a bottom girder 251, the bottom front side and the rear side of the bottom girder 251 are respectively provided with joists, a scaffold board is laid on the bottom girder 251, and a guard rail is erected on the end side. Hanging baskets 27 are provided on both sides of the lower work platform 25. The bottoms of the first strap 223 and the second strap 224 are connected to corresponding joists.
Still further, an upper work platform 26 is provided at the top of the diamond 21, and a hanging basket 27 is provided at the overhanging end side of the upper work platform 26. The upper work platform 26 is used for concrete casting applications.
At the moment, the diamond-shaped frames are assembled to form a movable frame body for the section-by-section construction of the bridge cast-in-situ section, so that the second function of the hanging integrated machine, namely a hanging basket function, is realized.
In a specific embodiment of the present invention, as shown in fig. 9 and 10, after the construction of the bridge cast-in-situ section 122 is completed, the hanging basket, the first hanging strap, and the second hanging strap are removed, and the bottom longitudinal beam 251 of the lower working platform 25 is hung on the guide beam 24, where the guide beam 24 is fixedly connected with the bridge cast-in-situ section 122, specifically, an embedded part may be disposed on the bridge cast-in-situ section 122, and then the guide beam 24 is fixedly connected with the embedded part. The manual control jack pushes the diamond frame 21 backwards, the overhanging part of the diamond frame 21 moves to the upper part of the bridge cast-in-situ section, then a lifting structure 29 is arranged on the upper beam 222 of the diamond frame 21, and the lifting structure 29 comprises a crane jack 291 arranged on the upper beam 222, a guide frame 292 arranged on the upper beam 222, a hanging bracket 294 connected with a steel strand 293 bypassing the guide frame 292 and penetrating the crane jack 291, and a hanging bracket 295 connected with the hanging bracket 294. Preferably, two handling structures 29 are provided.
The steel-concrete joint section 123 is connected to the hanger 295, and the steel-concrete joint section 123 is suspended to a connection position by the crane jack 291.
Referring to fig. 11, after the reinforced concrete joint section 123 is lifted in place, a temporary fixing stiffness frame 241 is provided on the bridge cast-in-situ section 122, and the reinforced concrete joint section 123 is temporarily fixed by the temporary fixing stiffness frame 241.
The guide beam 24 is then lengthened, the lengthened section of the guide beam 24 is allowed to support the anchoring section on the reinforced concrete joint section 123, then the bottom longitudinal beam 251 is moved over the guide beam 24, the bottom longitudinal beam 251 is moved to the joint position, and then a form is set and concrete is poured to connect the bridge cast-in-place section 122 and the reinforced concrete joint section 123.
At the moment, the diamond-shaped frame and the lifting structure are combined to form the light crane, so that the steel-concrete combined section can be lifted, and the third function of the hanging integrated machine, namely the light crane function, is realized.
As shown in fig. 12 and 13, after the steel-concrete joint section 123 is installed, the steel box girder 124 is installed by hoisting based on the steel-concrete joint section 123, so as to complete the construction of the bridge, and the steel box girder 124 is welded and fixed with the installed bridge portion after being hoisted in place.
The track 231 is arranged on the reinforced concrete combination section 123, so that the stability of the structure is improved, four diamond frames 21 are arranged at the moment, and therefore, when the construction of the side span part of the bridge is completed, two diamond frames 21 at the side span part can be moved to the middle span construction position, the four diamond frames 21 are connected together through the upper cross beam 222 and the middle door frame 221, the four diamond frames 21 provide reliable support for the lifting structure 29, and the lifting requirement of the steel box girder 124 is met.
At the moment, the diamond frames and the lifting structure are combined to form the heavy crane, so that the steel box girder can be lifted, and the fourth function of the hanging integrated machine is realized, and the heavy crane is realized.
The hanging integrated machine can synchronously construct on two opposite piers, and each pier simultaneously constructs in the side span and middle span directions, so that the stress of the piers is balanced, the lengths of the side span and the middle span bridge cast-in-situ section are consistent, and the steel-concrete combined section and the steel box girder are hoisted and installed after the middle span bridge cast-in-situ section is constructed, thereby completing the closure of the bridge.
The invention also provides a construction method of the multifunctional hanging integrated machine, and the construction method is described below.
As shown in fig. 1 and 2, the construction method of the present invention includes the steps of:
the diamond-shaped frame 21 is adjusted according to the design inclined plane of the bottom of the bridge;
A plurality of diamond frames 21 are provided at the side portions of the bridge pier 10;
setting templates on the diamond-shaped frames 21 and applying cast-in-situ blocks 121;
removing the set templates and the diamond-shaped frames 21 after the cast-in-situ block 121 is formed;
as shown in connection with fig. 3, a track 231 is provided on top of the cast-in-place block 121;
The two diamond frames 21 are connected together through a middle door frame 221 and an upper cross beam 222, the middle door frame 222 is connected between the middle parts of the two diamond frames 21 in a supporting way, and the upper cross beam 222 is connected between the end parts of the two diamond frames 21 in a supporting way;
a sliding support 232 is arranged on one side of the diamond-shaped frame 21 far away from the upper beam 222, and the sliding support 232 is arranged on a corresponding track 231 in a sliding manner, so that the upper beam 222 connected to the diamond-shaped frame 21 is overhung to the outer side of the cast-in-situ block 121;
as shown in connection with fig. 5, a driving member 281 is provided at the rail 231, and the driving member 281 is connected with a corresponding sliding support 232 to drive the sliding support 232 to move along the rail 231;
a first hanging strip 223 is vertically arranged on the middle door frame 221;
A second hanging strip 224 which is vertical is connected to the upper beam 222;
the first suspender 223 and the second suspender 224 are connected with the guide beam 24 arranged near the top of the cast-in-situ block 121;
The bottoms of the first suspender 223 and the second suspender 224 are connected with a lower working platform 25 which is arranged close to the bottom of the cast-in-situ block 121;
The bridge cast-in-situ section 122 connected with the cast-in-situ block 121 is manufactured section by section through the guide beam 24 and the lower operation platform 25, and the positions of the guide beam 24 and the lower operation platform 25 are adjusted by moving the adjusting diamond frame 21 and the track 231 forwards in the construction process of the bridge cast-in-situ section 122 so as to meet the requirement of constructing the bridge cast-in-situ section 122 section by section;
as shown in fig. 9, 10 and 12, after the construction of the bridge cast-in-situ section 122 is completed, a lifting structure 29 is installed on the upper beam 222, the reinforced concrete combined section 123 and the reinforced concrete beam 124 are lifted by the lifting structure 29, the reinforced concrete combined section 123 is connected with the bridge cast-in-situ section 122, and the reinforced concrete beam 124 is connected with the reinforced concrete combined section 124, thereby completing the construction of the bridge.
In one embodiment of the present invention, as shown in fig. 2, when the diamond 21 is disposed at the side of the bridge pier 10, the embedded parts 111 are disposed at the side of the bridge pier 10, and the split bolts 112 are disposed between the oppositely disposed embedded parts 111 to be fixedly connected;
The diamond 21 is detachably connected with the corresponding embedded part 111.
Preferably, the detachable connection between the diamond 21 and the embedded part 111 is achieved by bolts.
In one embodiment of the present invention, as shown in fig. 5 and 8, when the driving member 281 drives the corresponding diamond 21 to move, the travel data of the diamond 21 is obtained;
The stroke deviation is calculated based on the stroke data of the two diamond frames 21, and the next driving stroke of the driving piece is controlled according to the calculated formed deviation to realize deviation correction.
In one embodiment of the present invention, as shown in FIG. 3, an upper work platform 26 is provided on both diamond frames 21 during construction of the bridge cast-in-place section 122;
the hanging basket 27 is arranged at the end sides of the upper working platform 26 and the lower working platform 25, and the upper working platform 26 and the hanging basket 27 are utilized to construct the bridge cast-in-situ section 122.
In one embodiment of the present invention, as shown in fig. 9, the guide beam 24 is fixedly connected to the bridge cast-in-situ section 122 when constructing the bridge cast-in-situ section 122 at a position close to the reinforced concrete joint section 123;
hanging a lower working platform 25 on the guide beam 24;
The first strap 223 and the second strap 224 are removed to facilitate lifting of the reinforced concrete joint section 123.
In one embodiment of the present invention, as shown in fig. 12 and 13, two diamond frames 21 are added to the bottom of the upper beam 222 before the steel box girder 124 is hoisted, and corresponding rails, sliding supports and driving members are provided to the bottoms of the diamond frames 21. The two added diamond frames 21 are used for straddling construction.
The bridge is arranged on two piers, the construction method of the invention adopts a synchronous construction mode of the two piers, synchronous side span construction and middle span construction are carried out at each pier, the lengths of the side span and middle span bridge cast-in-situ sections are consistent, after the bridge cast-in-situ sections are constructed, the steel-concrete combined sections and the steel box girders are hoisted at the positions of the middle spans, when the steel-concrete combined sections are installed, the inner and outer templates, the inner guide girders, the hanging strips and the bottom joists of the side span hanging baskets are removed, the inner templates and the inner guide girders of the middle span hanging baskets are removed, and a middle span hanging basket retreating track is paved, the middle span hanging basket is retreated by adopting a temporary manually controlled jack so as to anchor the bottom joist at the poured bridge sections, and then the hydraulic continuous jack and the steel strand guide girders are installed on the hanging basket cross beams, and lifting steel strands and hanging frames are arranged. Lifting lugs are welded at the top of the reinforced concrete combined section and are connected with the lifting tool and transported to a preset position, steel strands are put down, the lifting tool is connected with the lifting tool, and the reinforced concrete combined section is lifted. After the steel-concrete combined section is lifted to the design position, the guide beam is connected with the steel structure of the steel-concrete combined section to serve as a temporary fixing stiffness framework, so that the temporary fixing of the steel structure of the steel-concrete combined section is realized. And the middle span hanging basket and the hanging basket outer mold move forward, concrete is poured on the steel-concrete combination section, the hanging basket outer mold and the bottom joist are removed after the concrete reaches the strength, and the connection of the guide beam and the steel-concrete combination section steel structure is disconnected. Paving a hanging basket advancing track, operating a hydraulic jack control system, walking the hanging basket to a preset lifting position, temporarily anchoring, then transporting the side-span hanging basket to a middle-span hanging basket position, assembling the side-span hanging basket with the middle-span hanging basket by utilizing a connecting piece to form a heavy bridge deck crane capable of bearing the weight of the whole steel box girder section in the middle, lightering the whole section steel box girder to a design position, lowering the hanging frame, connecting the hanging frame with the hanging frame, lifting the whole section steel box girder by adopting a continuous jack, and connecting the whole section steel box girder with the existing section after lifting to the design position to complete full bridge closure.
According to the invention, the hanging basket of the cantilever pouring section and the crane for hoisting the span steel box girder are uniformly designed to form the hanging integrated machine suitable for construction of the continuous rigid frame bridge of the ultra-large span hybrid girder, and the hanging integrated machine has an automatic deviation correcting function.
The hanging integrated machine and parts thereof have 4 functions in the whole construction process of the continuous rigid frame bridge of the hybrid beam, and are respectively ① bracket functions, wherein the assembled multifunctional diamond frame is deformed by an adjustable rod, is connected with a bolt through an adjusting hole and is used as a bracket for pouring a pier top cast-in-place block (also called a No. 0 block), the hanging basket function of the ② hanging integrated machine is formed by adjusting and deforming the bracket used for pouring the No. 0 block, the main bearing structure of the hanging integrated machine is formed by adjusting and deforming the bracket used for pouring the No. 0 block, the light crane of the ③ steel-concrete combined section and the stiffness framework function are realized by the light crane state of the hanging integrated machine, the hoisting of the steel-concrete combined section is realized, the guide beam of the hanging basket is used as a stiffness framework for temporarily fixing the steel-concrete combined section, and the heavy crane function of the ④ integral steel box girder section is formed by combining the side span diamond frame and the midspan diamond frame.
In addition, the current basket hanging forward advancing process mainly comprises two independent jacks arranged on the left limb and the right limb, and the two independent jacks are manually operated to push forward, so that the problems of low advancing efficiency, poor synchronism and the like in the current basket hanging forward advancing process are solved. The hanging integrated machine can integrate and unify tools and equipment required by the continuous rigid frame bridge of the hybrid beam, not only can improve the construction efficiency, but also can reduce the entering and exiting fields, mounting and dismounting and use cost of various large-scale construction equipment in the construction process. In addition, the multifunctional hanging integrated machine can also improve the safety of cantilever pouring and hanging processes and ensure the construction quality.
Compared with the prior art, the suspension all-in-one machine has the advantages that the suspension all-in-one machine integrates various functions and equipment such as a No. 0 block bracket, a cantilever pouring section hanging basket, a steel-concrete combined section light crane, a temporary fixed stiffness framework, an integral steel box girder section heavy crane and the like required by the continuous rigid frame bridge of the hybrid girder, realizes the unified design of construction equipment and tools, and overcomes the defects of complex equipment, single equipment function and high construction cost of the traditional continuous rigid frame bridge tool equipment of the hybrid girder. In addition, the hanging integrated machine realizes the forward movement and automatic deviation correction of the jack through the jack control system, and can greatly improve the reliability and safety of equipment.
The present invention has been described in detail with reference to the embodiments of the drawings, and those skilled in the art can make various modifications to the invention based on the above description. Accordingly, certain details of the illustrated embodiments are not to be taken as limiting the invention, which is defined by the appended claims.
Claims (6)
1. The utility model provides a construction method of multi-functional all-in-one of hanging, its characterized in that, multi-functional all-in-one of hanging is used for constructing the bridge on the pier, multi-functional all-in-one of hanging includes:
The adjustable diamond frames can be arranged on two sides of the bridge pier, and cast-in-situ formwork supporting surfaces are formed on the diamond frames so as to cast-in-situ blocks on the bridge pier;
The track is arranged at the top of the cast-in-situ block;
the sliding support is arranged on the diamond frame and can be used for sliding the diamond frame on the track;
The driving piece is arranged on the track and connected with the corresponding sliding support so as to drive the sliding support to move along the track;
A middle door frame which is connected with the diamond frames on the two rails in a sliding way;
An upper cross beam which is connected with the overhanging ends of the diamond frames arranged on the two rails in a sliding way is supported;
The first hanging strip is vertically arranged and connected with the middle door frame;
The second suspender is vertically arranged and connected with the upper cross beam;
The guide beam is connected to the first suspender and the second suspender and is arranged close to the top of the cast-in-situ block;
The lower operation platform is connected to the bottoms of the first suspender and the second suspender and is close to the bottom of the cast-in-situ block;
The lifting structure can be arranged on the upper cross beam, and is used for lifting the steel-concrete combined section and the steel box girder to be connected with the bridge cast-in-situ section, so that bridge construction is completed;
the construction method comprises the following steps:
Adjusting the diamond frame according to a design inclined plane at the bottom of the bridge;
arranging a plurality of diamond frames on the side part of the bridge pier;
setting a template on the diamond frame and applying cast-in-situ blocks;
Removing the set templates and the diamond-shaped frames after the cast-in-situ block is formed;
arranging a track on the top of the cast-in-situ block;
The two diamond frames are connected together through a middle portal and an upper cross beam, the middle portal support is connected between the middle parts of the two diamond frames, and the upper cross beam support is connected between the end parts of the two diamond frames;
A sliding support is arranged on one side of the diamond frame far away from the upper beam, and is arranged on a corresponding track in a sliding manner, so that the upper beam connected to the diamond frame is overhung to the outer side of the cast-in-situ block;
A driving piece is arranged on the track and is connected with a corresponding sliding support to drive the sliding support to move along the track;
a first hanging strip which is vertical is arranged on the middle portal frame;
a second hanging strip which is vertical is connected to the upper cross beam;
a guide beam arranged close to the top of the cast-in-situ block is connected to the first suspender and the second suspender;
the bottoms of the first hanging strip and the second hanging strip are connected with a lower operation platform which is arranged close to the bottom of the cast-in-situ block;
The bridge cast-in-place section connected with the cast-in-place block is manufactured section by section through the guide beam and the lower operation platform, and the positions of the guide beam and the lower operation platform are adjusted by moving and adjusting the diamond frame and the track forwards in the construction process of the bridge cast-in-place section so as to meet the requirement of constructing the bridge cast-in-place section by section;
After the construction of the bridge cast-in-situ section is completed, a lifting structure is arranged on the upper cross beam, the steel-concrete combined section and the steel box girder are lifted by the lifting structure, the steel-concrete combined section is connected with the bridge cast-in-situ section, and the steel box girder is connected with the steel-concrete combined section, so that the construction of the bridge is completed.
2. The construction method according to claim 1, wherein, when the diamond frame is arranged at the side part of the pier, embedded parts are arranged at the side part of the pier, and split bolts are arranged between the oppositely arranged embedded parts for connection and fixation;
and detachably connecting the diamond frame with the corresponding embedded part.
3. The construction method according to claim 1, wherein travel data of the corresponding diamond frame is obtained when the driving member drives the diamond frame to move;
and calculating the stroke deviation based on the stroke data of the two diamond frames, and controlling the next driving stroke of the driving piece according to the calculated formed deviation so as to realize deviation correction.
4. The construction method according to claim 1, wherein an upper working platform is provided on the two diamond frames when constructing the cast-in-place section of the bridge;
And arranging hanging baskets at the end sides of the upper working platform and the lower working platform, and using the upper working platform and the hanging baskets to construct a bridge cast-in-situ section.
5. The construction method according to claim 1, wherein the guide beam is fixedly connected to the bridge cast-in-situ section when constructing the bridge cast-in-situ section at a position close to the reinforced concrete joint section;
Hanging the lower operation platform on the guide beam;
and removing the first hanging strip and the second hanging strip so as to facilitate hoisting of the reinforced concrete joint section.
6. The construction method according to claim 1, wherein two diamond-shaped frames are additionally arranged at the bottom of the upper cross beam before the steel box girder is hoisted, and corresponding rails, sliding supports and driving pieces are arranged at the bottoms of the arranged diamond-shaped frames.
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| CN202310142507.XA CN116219905B (en) | 2023-02-20 | 2023-02-20 | Multifunctional hanging integrated machine and construction method thereof |
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| CN117005320A (en) * | 2023-08-22 | 2023-11-07 | 中交一公局第二工程有限公司 | Drag construction technology of double-layer steel truss bridge connected with double-layer cast-in-place box girders |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201574360U (en) * | 2009-12-10 | 2010-09-08 | 吴真珍 | Truss type hanging basket |
| CN203065975U (en) * | 2013-01-09 | 2013-07-17 | 中铁十局集团西北工程有限公司 | Box beam block number zero pouring supporting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104631343B (en) * | 2015-02-15 | 2016-08-24 | 河海大学 | From traveling rhombus keying cradle in truss type structure and suspended basket and construction method |
| CN207608836U (en) * | 2017-12-07 | 2018-07-13 | 中交第三航务工程局有限公司 | A kind of Successive interference cancellation cantilever pouring construction Diamond-Shape Form Traveler |
| CN109505267A (en) * | 2018-12-12 | 2019-03-22 | 中建港务建设有限公司 | A kind of Hanging Basket cantilever pouring construction method |
| CN218436648U (en) * | 2022-08-26 | 2023-02-03 | 中交四航局第一工程有限公司 | Combined system for cast-in-situ pier top beam |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201574360U (en) * | 2009-12-10 | 2010-09-08 | 吴真珍 | Truss type hanging basket |
| CN203065975U (en) * | 2013-01-09 | 2013-07-17 | 中铁十局集团西北工程有限公司 | Box beam block number zero pouring supporting system |
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