CN110878532A - Subway box girder translation construction device and method - Google Patents

Abstract

The invention discloses a subway box girder translation construction device and method, and relates to the field of subway construction. The tops of the first slider and the second slider are respectively provided with a jacking structure for lifting, and the top of the jacking structure is provided with a sliding mechanism; the lower end of the moving beam is provided with a movable rolling structure; the sliding mechanism includes a "ten" The transverse slideway and the longitudinal slideway are arranged crosswise in the shape of "", and a roller trolley for connecting and driving the box girder to move is respectively installed, and both ends of the transverse slideway and the longitudinal slideway are provided with support structures. The device can translate the box girder to the design position through adjustment, which improves the construction efficiency of the box girder, is convenient to use, and can be reused many times, saving a lot of manpower and material resources. The use method of the device can facilitate the construction and translation of the box girder, and can also realize the stable translation of the box girder.

Description

A kind of subway box girder translation construction device and method

technical field

The invention relates to the field of subway construction, in particular to a subway box girder translation construction device and method.

Background technique

With the development of urban subways, the number of large-scale bridges in subway construction has gradually increased, and large-span box girder has been widely used in the design. Installed and used for a second time, and then installed in place. The existing box girder translation construction is basically to prefabricate the box girder in the prefabrication field, and then use the beam transport trolley to transport the prefabricated girder to the construction site, and then hoist the box girder through the bridge erection machine or large hoisting equipment. At the predetermined position, the prefabricated box girder is hoisted at the designed position through the cooperation of the construction personnel on site. In this construction process, hoisting and hoisting the box girder requires large-scale equipment, and at the same time requires the close cooperation of the hoisting personnel and the on-site construction personnel, and communicates at any time, so that the box girder can be hoisted and installed at the design position with a bridge erecting machine or large hoisting equipment. With the cooperation of a large number of people, it is more troublesome to communicate. At the same time, it takes a lot of time to install, and if you encounter high piers or weak soil, you need to use special hoisting equipment, or you can only use a bridge erection machine or even spend a lot of money to achieve hoisting. It is not conducive to the hoisting construction of the box girder.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies of the prior art, and to provide a subway box girder translation construction device and method, which can translate the box girder to the design position through adjustment, improve the construction efficiency of the box girder, and at the same time, it is convenient to use and also It can be reused many times, saving a lot of manpower and material resources. The use method of the device can facilitate the construction and translation of the box girder, and can also realize the stable translation of the box girder.

The purpose of this invention is to realize through the following technical solutions:

A subway box girder translation construction device includes a moving mechanism and a sliding mechanism; the moving mechanism includes a moving beam, and a sliding first sliding block and a second sliding block are installed on the moving beam, and the first sliding block and The second sliding blocks are symmetrically arranged on both sides of the moving beam, the top ends of the first sliding block and the second sliding block are respectively provided with a jacking structure for lifting and lowering, and the top end of the jacking structure is provided with a sliding mechanism; The lower end of the moving beam is provided with a movable rolling structure; the sliding mechanism includes a transverse slideway and a longitudinal slideway which are arranged in a "cross" shape, and the transverse slideway and the longitudinal slideway are respectively installed for connecting and The roller trolley drives the box beam to move, and both ends of the transverse slideway and the longitudinal slideway are provided with support structures.

By adopting the above technical solution, the moving mechanism of the device includes a moving beam, and the moving beam is installed with a sliding first slider and a second slider, which are used to drive the lifting jacks respectively provided at the tops of the first slider and the second slider. The lifting structure can be lifted and lowered to adjust the sliding mechanism provided at the top of the lifting structure, while the lower end of the moving beam is provided with a movable rolling structure to adjust the movement of the device; the sliding mechanism includes a "cross" shape. Cross-set transverse slides and longitudinal slides are used to provide longitudinal and lateral moving tracks for the roller trolleys set on the lateral slides and longitudinal slides respectively, so that the roller trolley is connected to the box beam that needs to be translated, and the roller trolley runs on the lateral slideway. It moves on the longitudinal slideway, and drives the box girder to move with the roller trolley, so as to realize the translation of the box girder; the device can translate the box girder to the design position through adjustment, which improves the construction efficiency of the box girder.

Preferably, a connecting plate is provided between the first sliding block and the second sliding block, the connecting plate is movably arranged on the top surface of the moving beam, and one end of the connecting plate is fixed to the first sliding block , and the other end is fixed with the second sliding block.

By adopting the above technical solution, the connecting plate is movably arranged on the top surface of the moving beam, one end is fixed with the first sliding block, and the other end is fixed with the second sliding block, so that the first sliding block and the second sliding block are connected through the connecting plate connected together, so as to achieve the purpose of moving the first sliding block and the second sliding block together.

Preferably, the jacking structure includes a first jacking jack and a second jacking jack, and the top ends of the first jacking jack and the second jacking jack are in active contact with the respective lateral slides; A first fixing seat is fixed on the outer wall of the upper end of the oil cylinder of the jack, and a second fixing seat is fixed on the outer wall of the upper end of the oil cylinder of the second jack, and the first fixing seat and the second fixing seat are connected. There are fixed plates.

By adopting the above technical solution, the first jack and the second jack of the jacking structure are in movable contact with the lateral slides respectively, and the first fixed seat and the second jack are fixed on the outer wall of the upper end of the cylinder of the first jack. The second fixing base fixed on the outer wall of the upper end of the cylinder of the jack is connected by a fixing plate, so as to realize that the first jacking jack and the second jacking jack move together under the action of external force.

Preferably, a push plate is fixed on the top end of the first sliding block, one end of the push plate is fixed with the first fixing seat, and the other end of the push plate is fixed with a lateral push jack, The other end is fixed with a fixed pedestal, and the other end of the fixed pedestal is fixed with the moving beam.

By adopting the above-mentioned technical solution, the movement of the lateral push jack drives the movement of the push plate fixed to one end of the lateral push jack, thereby realizing the movement of the first slider fixed to the push plate and driving the movement of the second slider.

Preferably, the rolling structure includes movable beams symmetrically arranged on both sides of the movable beam, lower ends of the movable beams are respectively fixed with sliding grooves adapted to the movable beams, and bottom surfaces of the other ends of the movable beams are respectively connected There are movable rollers; both ends of the bottom surface of the moving beam are also connected with rollers.

By adopting the above technical solution, the lower ends of the moving beams are respectively fixed with chutes adapted to the movable beams, so that the two movable beams can move in the sliding grooves so as to adjust the position of the device, and the rollers provided on the movable beams and the movable beams The purpose is to facilitate the movement of the device, make the device easy to use, and can be reused many times, thereby saving a lot of manpower and material resources.

Preferably, one end of the moving beam away from the movable beam is symmetrically provided with a longitudinal propelling jack, and the other ends of the longitudinal propelling jack are respectively fixed with positioning seats, and several bolts are symmetrically arranged on the positioning seats. The seats are connected to the ground by several bolts.

By adopting the above technical solution, the movement of the longitudinally propelling jack can drive the moving beam to move on the two movable beams, so as to adjust the device to the optimal beam-moving position; when in use, several bolts of the positioning seat are fixed to the ground, so as to Provide a support platform for the longitudinal thrust jack to realize the moving effect of the longitudinal thrust jack.

Preferably, the support structure includes a telescopic rod for support, two ends of the transverse slideway and the longitudinal slideway are respectively fixed to the top end of the telescopic rod, and the other end of the telescopic rod is in contact with the ground.

By adopting the above technical solutions, the telescopic rods provide a support structure for the lateral slides and the longitudinal slides, so as to support the loads of the box beams on the lateral slides and the longitudinal slides.

A method of a subway box girder translation construction device, the steps are as follows:

S1: First re-measure the elevation of the bridge pier with a leveling instrument, and adjust the height of the base cushion used to support the box girder according to the re-measured data, so as to determine the height of the base cushion and the base installation position of the bridge pier. At the same elevation, two temporary supports are placed symmetrically on the base cushion of the bridge pier, and a hydraulic jack is placed under each temporary support, and the temporary supports are used to temporarily support the box girder;

S2: Then move the device to the position of the pre-drawn installation positioning line on the bridge pier, adjust the lateral propulsion jack and the two longitudinal propulsion jacks of the device, so that the first jacking jack and the second jacking jack of the device are in The upper center of the moving beam is symmetrical on both sides, and at the same time, the intersection point of the lateral slide and the longitudinal slide is aligned with the center of the moving beam, and then marks are marked on the lateral slide and the longitudinal slide; assembly debugging and leveling After the device is installed, the two positioning seats are fixedly connected to the bridge pier with bolts, and the box girder is hoisted to the top of the device after confirmation;

S3: Raise the hydraulic jack described in S1, lift the two temporary supports to a height higher than the top surface of the roller trolley of the device, and then slowly hoist the box beam onto the two temporary supports, and then Adjust the height of the two hydraulic jacks, and level the box girder hanging on the two temporary supports;

S4: Then slowly lower the two hydraulic jacks, align the connecting seat pre-set at the bottom of the box girder for connecting the roller trolley with the roller trolley on the lateral slide, and connect the connecting seat and the roller trolley well, Then adjust the position of the beam-moving jack in the lateral direction of the box girder away from the translation direction, abut one end against the stopper fixed on the bridge pier, and the other end against the roller trolley on the lateral slideway, and then Adjust the lateral beam-moving jacks respectively, let the roller trolley drive the box beam to move on the lateral slideway, and move the box beam to the horizontally designed position;

S5: Then lower the first jacking jack and the second jacking jack, and shrink the telescopic rods connected at both ends of the lateral slideway and the longitudinal slideway respectively, so that the two temporary supports support the box girder at this time, Translate the device to the center line below the box girder, repeat the steps S2 and S3, adjust the position of the device and the box girder, and connect the pre-set connection seat at the bottom of the box girder for connecting the roller trolley with the The roller trolleys on the lateral slideway are aligned, and the connecting seat is connected with the roller trolley, and then the position of the beam shifting jack is adjusted in the longitudinal direction of the box girder away from the translation direction, and one end is abutted against the stopper fixed on the bridge pier. On the block, the other end rests on the roller trolley on the longitudinal slideway, and then adjust the longitudinal beam shifting jacks respectively, so that the roller trolley drives the box girder to move on the longitudinal slideway, and moves the box girder to the longitudinally designed position ;

S6: After the box girder is in place, install the permanent support on the base cushion and the designed position, then lower the first jacking jack and the second jacking jack and shrink and set them on the lateral slide and The telescopic rods on the bottom surfaces of both ends of the longitudinal slideway, then separate the two roller trolleys from the connecting seat, and withdraw the device; then slowly lower the height of the two hydraulic jacks to connect the two temporary supports to the box girder The bottom surface is separated, the temporary support is withdrawn, the box girder falls on the permanent support, and the permanent support and the box girder are connected to complete the translation construction of the box girder.

By adopting the above technical solution, the use method of the device can make the device realize the function of stably translating the box girder, and the method can save a lot of manpower and material resources, greatly improve the translation effect of the box girder, and is conducive to ensuring the construction efficiency. went well.

The beneficial effects of the present invention are:

1. The moving mechanism of the device includes a moving beam, and the moving beam is equipped with a sliding first slider and a second slider, which are used to drive the jacking structures provided at the top of the first slider and the second slider respectively, and the top The lifting structure can be lifted and lowered to adjust the sliding mechanism provided at the top of the lifting structure, while the lower end of the moving beam is provided with a movable rolling structure to adjust the movement of the device; The slideway and the longitudinal slideway are used for the longitudinal and lateral movement tracks of the roller trolleys set on the lateral slideway and the longitudinal slideway respectively, so that the roller trolley is connected with the box beam that needs to be translated, and the roller trolley is on the lateral slideway and the longitudinal slideway. The device can move the box girder to the design position through adjustment, which improves the construction efficiency of the box girder.

2. The connecting plate is movably arranged on the top surface of the moving beam, and one end is fixed with the first sliding block, and the other end is fixed with the second sliding block, so that the first sliding block and the second sliding block are connected together through the connecting plate, so that the This is to achieve the purpose of moving the first slider and the second slider together; the first jack and the second jack of the jacking structure are in movable contact with the lateral slides respectively, and the outer wall of the upper end of the oil cylinder of the first jack is in contact with each other. The fixed first fixed seat and the second fixed seat fixed on the upper end outer wall of the oil cylinder of the second jacking jack are connected by a fixed plate, so that the first jacking jack and the second jacking jack can move together under the action of external force.

3. The movement of the lateral push jack drives the movement of the push plate fixed at one end of the lateral push jack, so as to realize the movement of the first slider fixed to the push plate and drive the movement of the second slider; the lower ends of the moving beams are respectively fixed with The movable beam is adapted to the chute, so that the two movable beams can move in the chute so as to adjust the position of the device. The purpose of the rollers provided on the movable beam and the movable beam is to facilitate the movement of the device and make the device easy to use. It can also be reused many times, thereby saving a lot of manpower and material resources.

4. The movement of the longitudinal push jack can drive the moving beam to move on the two movable beams, so as to adjust the device to the optimal position of the moving beam; when in use, several bolts of the positioning seat are fixed with the ground, so as to provide the longitudinal push jack A supporting platform realizes the moving effect of the longitudinal propulsion jack; the telescopic rod provides a support structure for the lateral slide and the longitudinal slide so as to support the load of the box beam on the lateral slide and the longitudinal slide.

5. The use method of the device can make the device realize the function of stably translating the box girder, and the method can save a lot of manpower and material resources, greatly improve the translation effect of the box girder, and help to ensure the smooth progress of the construction.

Description of drawings

Fig. 1 is the structural representation of a kind of subway box girder translation construction device of the present invention;

Fig. 2 is the axial schematic diagram of a kind of subway box girder translation construction device of the present invention;

3 is a schematic front view of a subway box girder translation construction device of the present invention;

4 is a schematic bottom view of a subway box girder translation construction device according to the present invention;

5 is a schematic diagram of the use of a translation box girder of a subway box girder translation construction device of the present invention.

In the figure, 1-moving beam, 2-transverse slide, 3-longitudinal slide, 4-roller trolley, 5-first jack, 6-second jack, 7-fixed plate, 8-movable beam , 9-Longitudinal push jack, 10-Telescopic rod, 11-First slider, 12-Second slider, 13-Connecting plate, 51-First fixed seat, 52-Push plate, 53-Transverse push jack, 54 -Fixed pedestal, 61-Second fixed seat, 91-Positioning seat.

Detailed ways

The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.

As shown in Figures 1 to 5, a subway box girder translation construction device includes a moving mechanism and a sliding mechanism; the moving mechanism includes a moving beam 1, and a sliding first slider 11 and a second slider are installed on the moving beam 1. 12. The first sliding block 11 and the second sliding block 12 are symmetrically arranged on both sides of the moving beam 1. The tops of the first sliding block 11 and the second sliding block 12 are respectively provided with a jacking structure for lifting. The top is provided with a sliding mechanism; the lower end of the moving beam 1 is provided with a movable rolling structure; Roller trolleys 4 for connecting and driving the box beam to move are respectively installed, and both ends of the transverse slideway 2 and the longitudinal slideway 3 are provided with support structures. The moving mechanism of the device includes a moving beam 1, and the moving beam 1 is equipped with a sliding first slider 11 and a second slider 12, which are used to drive the lifting jacks respectively provided at the tops of the first slider 11 and the second slider 12. The lifting structure can be lifted and lowered to adjust the sliding mechanism provided at the top of the lifting structure, and the lower end of the moving beam 1 is provided with a movable rolling structure to adjust the movement of the device; the sliding mechanism includes a "cross" shape. Cross-shaped transverse slides and 2 longitudinal slides 3, which are used to provide longitudinal and lateral movement tracks for the roller trolleys 4 set on the transverse slides 2 and the longitudinal slides 3 respectively, so that the roller trolley 4 and the box girder that needs to be translated Connected, the roller trolley 4 moves on the transverse slideway 2 and the longitudinal slideway 3, and drives the box girder to move with the roller trolley 4, so as to realize the translation of the box girder; the device can translate the box girder to the design position by adjusting , improve the construction efficiency of box girder.

During the specific implementation of the device, the device is first placed at the position that needs to be translated, the elevation of the bridge pier is re-measured with a level, and the height of the base cushion used to support the box girder is adjusted according to the re-measured data. To make sure that the base cushion and the base of the pier are installed at the same elevation, two temporary supports are placed symmetrically on the base cushion of the pier, and a hydraulic jack is placed under each temporary support. The support is used to temporarily support the box girder; the device is then moved to the pre-drawn installation location line on the pier for placement. The device includes a moving mechanism and a sliding mechanism; the moving mechanism includes a moving beam 1 on which a sliding first sliding block 11 and a second sliding block 12 are installed, and the first sliding block 11 and the second sliding block 12 are symmetrically arranged at On both sides of the moving beam 1, the tops of the first sliding block 11 and the second sliding block 12 are respectively provided with a jacking structure for lifting and lowering, and the top of the jacking structure is provided with a sliding mechanism; the lower end of the moving beam 1 is provided with a movable rolling mechanism Structure, the rolling structure includes movable beams 8 symmetrically arranged on both sides of the movable beam 1, the lower ends of the movable beam 1 are respectively fixed with sliding grooves adapted to the movable beam 8, and the bottom surface of the other end of the movable beam 8 is respectively connected with movable The rollers, the two ends of the bottom surface of the moving beam 1 are also connected with rollers; and one end of the moving beam 1 away from the movable beam 8 is symmetrically provided with a longitudinal thrust jack 9, and the other end of the longitudinal thrust jack 9 is respectively fixed with a positioning seat 91, on the positioning seat 91 There are several bolts, and the positioning seat 91 is used for connecting with the ground. Connect the two positioning bases 91 to the ground through bolts, then adjust the two longitudinal thrust jacks 9, push the moving beam 1 to the middle position of the two movable beams 8, let the moving beam 1 be in the middle position, and then adjust the moving beam 1 on the the first sliding block 11 and the second sliding block 12, so that the moving beam 1 is in the middle of the first sliding block 11 and the second sliding block 12, so as to facilitate the translation of the box beam, and then adjust the first sliding block 11 and the second sliding block 12. The tops of the sliders 12 are respectively provided with jacking structures for lifting, and the jacking structures include a first jacking jack 5 and a second jacking jack 6, and the tops of the first jacking jack 5 and the second jacking jack 6 are The lateral slideways 2 are in active contact respectively; according to the designed height, the first jack 5 and the second jack 6 are raised to the designed moving height, and then the first jack 5 and the second jack 6 are raised It is in active contact with the lateral slideway 2 of the sliding mechanism. The lateral slideway 2 and the longitudinal slideway 3 of the sliding mechanism are respectively equipped with roller trolleys 4 for connecting and driving the box beam to move. The number of transverse slideways 2 and longitudinal slideways 3 is set according to the weight of the box girder and the limit of gravity that each roller trolley 4 can bear, so as to meet the requirements of the movement of the box girder. Then adjust the support structures provided at both ends of the transverse slideway 2 and the longitudinal slideway 3 . The support structure includes a telescopic rod 10 for support. Both ends of the transverse slideway 2 and the longitudinal slideway 3 are respectively fixed to the top end of the telescopic rod 10. The other end of the telescopic rod 10 is in contact with the ground to stretch the four telescopic rods 10. Let one end contact the ground, and the other end is supported on the bottom surfaces of the two ends of the lateral slideway 2 and the longitudinal slideway 3 respectively, so as to support the lateral slideway 2 and the longitudinal slideway 3 so that they can bear enough bearing capacity.

Further, the box girder that needs to be translated is then hoisted above the device, the hydraulic jacks under the two temporary supports are raised, and the two temporary supports are raised to a height higher than the top surface of the roller trolley 4 of the device, and then Slowly hoist the box girder to the two temporary supports, then adjust the height of the two hydraulic jacks, and level the box girder hanging on the two temporary supports; then slowly lower the two hydraulic jacks, Align the connecting seat pre-set at the bottom of the box girder for connecting the roller trolley 4 with the roller trolley 4, and connect the connecting seat with the roller trolley 4, and then install the moving beam in the horizontal and vertical directions of the box girder away from the translation direction. Jack, adjust the position of the beam shifting jack, place one end against the stop block fixed on the bridge pier, and the other end against the two roller trolleys 4, and then adjust the horizontal and vertical beam shifting jacks respectively, so that The roller trolley 4 drives the box girder to move on the lateral slideway 2 and the longitudinal slideway 3, and finally moves the box girder to the designed position.

The steps of using the translational construction device are as follows:

S1: First re-measure the elevation of the bridge pier with a leveling instrument, and adjust the height of the base cushion used to support the box girder according to the re-measured data, so as to determine the height of the base cushion and the base installation position of the bridge pier. At the same elevation, two temporary supports are placed symmetrically on the base cushion of the bridge pier, and a hydraulic jack is placed under each temporary support, and the temporary supports are used to temporarily support the box girder;

S2: Then move the device to the position of the pre-drawn installation positioning line on the bridge pier, adjust the lateral propulsion jack 53 and the two longitudinal propulsion jacks 9 of the device, so that the first jack 5 and the second jack 6 of the device are in The upper center of the moving beam 1 is symmetrical on both sides, and at the same time, align the intersection of the lateral slide 2 and the longitudinal slide 3 with the center of the moving beam 1, and then mark the scale on the lateral slide and longitudinal slide 3; Assemble, debug and level the device Afterwards, the two positioning seats 91 are fixedly connected to the bridge piers with bolts, and the box girder is hoisted to the top of the device after confirmation;

S3: Raise the hydraulic jack of S1, lift the two temporary supports to a height higher than the top surface of the roller trolley 4 of the device, then slowly lift the box girder to the two temporary supports, and then adjust the two hydraulic The height of the jack, leveling the box girder hanging on the two temporary supports;

S4: Then slowly lower the two hydraulic jacks, align the pre-set connecting seat at the bottom of the box girder for connecting the roller trolley 4 with the roller trolley 4 on the lateral slide 2, and connect the connecting seat and the roller trolley 4 well , and then adjust the position of the moving beam jack in the lateral direction of the box girder away from the translation direction, abut one end against the stopper fixed on the bridge pier, and the other end against the roller trolley 4 on the lateral slide 2, and then Adjust the lateral beam-moving jacks respectively, so that the roller trolley 4 drives the box beam to move on the lateral slideway 2, and moves the box beam to the horizontally designed position;

S5: Then lower the first jack 5 and the second jack 6, and shrink the telescopic rods 10 connected at both ends of the lateral slide 2 and the longitudinal slide 3 respectively, and let the two temporary supports support the box girder at this time , translate the device to the center line below the box girder, repeat steps S2 and S3, adjust the position of the device and the box girder, and set the pre-set connecting seat at the bottom of the box girder for connecting the roller trolley 4 to the transverse slideway 2 Align the roller trolley 4 above, and connect the connecting seat with the roller trolley 4, and then adjust the position of the moving beam jack in the longitudinal direction of the box girder away from the translation direction, and abut one end against the stop block fixed on the bridge pier, The other end rests on the roller trolley 4 on the longitudinal slideway 3, and then adjust the longitudinal beam shifting jacks respectively, so that the roller trolley 4 drives the box girder to move on the longitudinal slideway 3, and moves the box girder to the longitudinally designed position ;

S6: After the box girder is in place, install the permanent support on the base cushion and the designed position, then lower the first jacking jack 5 and the second jacking jack 6 and shrink and set them on the transverse slideway 2 and the longitudinal slideway 3. The telescopic rods 10 on the bottom surface of both ends, then separate the two roller trolleys 4 from the connecting seat, and withdraw the device; then slowly lower the height of the two hydraulic jacks, separate the two temporary supports from the bottom surface of the box girder, and remove the Take out the temporary support, let the box girder fall on the permanent support, connect the permanent support and the box girder, and complete the translation construction of the box girder.

Preferably, in the construction it is worth noting that:

1: Leveling. Take a point every 0.5m in the range of the slideway to re-measure the elevation of the pier and abutment, and adjust the height difference of the base cushion according to the re-measurement data to ensure that the bottom surface of the base installation position of the same bridge pier and abutment is adjusted to the same elevation and position. Uneven areas need to be leveled with mortar.

2: Place the beam-moving slideway. According to the pre-drawn installation positioning line on the bridge pier, the lateral slideway 2 and longitudinal slideway 3 of the device are placed in place, and the installation requirements for the installation of the lateral slideway 2 and the longitudinal slideway 3 are controlled as follows:

Slideway Installation Quality Control Sheet

3: Place the roller trolley 4, pump station, traverse oil cylinder, etc. to the position of the moving design, and debug it so that it is required when moving the box beam.

4: Assembly and debugging. According to the smooth installation of the equipment on the slideway, install the roller trolley 4 and the screw jack respectively. After the assembly is complete, the beam can be moved only after the empty car runs without error.

5: The box beam is leveled. Before moving the box girder, four 200t hydraulic jacks shall be used to lift the box girder from the temporary support, and the height shall exceed the device by 4-5cm; The positioning line aligns the box beam longitudinally. After the alignment is completed, slowly drop the beam on the top seat of the roller trolley 4 of the device and connect it. The box beam is leveled by the beam shifting trolley oil cylinder, and the beam can be moved after leveling.

6: Move the beam and the box beam into place;

Step 1: Mark the scale on the slideway. When moving the box beam, it is necessary to measure whether the transverse distance is consistent. If it exceeds 50mm, it needs to stop for unilateral adjustment. After the adjustment is completed, the beam is moved. Horizontal and vertical alignment.

Step 2: Exit the device and adjust the elevation. After the alignment is completed, use the oil top to lift the box beam to make the device empty, and then withdraw the device. Adjust the elevation and control the thickness of the mortar cushion within the allowable range.

Step 3: The box girder is grouted in place to complete the erection of the one-hole box girder.

After the top beam is ready, slowly supply oil to the two jacks at one end. The oil pressure gauge should not be greater than 5MPa/min. The oil pump driver should pay attention to the change of the oil gauge at any time. For the dead oil valve, first pad the steel plate, then pad the bottom layer and the top layer of the steel plate with rubber pads, then open the oil valve of the oil pump, continue to lift, and pad the steel plate. The gap between them is slightly larger than the total height of the supports.

7: Support installation. After the beam body is lifted into place, lock the oil valve. At this time, the longitudinal and lateral position deviation of the beam body should be carefully reviewed, and the plane position should be adjusted with a jack until the design requirements are met, and the permanent support can be installed. During installation, the elevation and span should be measured to ensure that each bearing meets the requirements of the construction specification, and the positioning of the pier anchor bolt holes should be accurate. After the permanent bearing is installed, the beam will begin to fall, until the permanent bearing completely falls on the cushion stone. Finally, the grouting and other processing work are carried out, the permanent support and the box beam are connected, and the translation construction of the box beam is completed.

In this embodiment, the equipment schedule is as follows:

Machinery and equipment material input plan

Device model quantity work content Translational construction device 1 set slip box girder Manual hydraulic jack 8 units Replacement of falling beams, temporary support hanging basket platform 1 set Work platform for beam shifting construction

The parameters of the translational construction device are as follows:

Main technical parameters of translational construction device

At the same time, the lateral movement of the beam adopts rail sliding, and the sliding part adopts stainless steel plate, and the contact surface is lubricated with butter before construction.

The parameters of the roller trolley 4, the slideway and the beam shifting jack of the device are as follows:

Main technical parameters of roller trolley 4, slideway and beam shifting

Note: According to the weight of the box girder, set the parameters of the beam-moving jack roller trolley 4 and the slideway. At the same time, due to the length of the slideway, a support structure (telescopic rod 10) needs to be erected in the middle to support the entire box girder. Considering the construction cost and the impact of traffic below the completed beam body. The method of building a steel pipe bracket as a construction platform is not only labor-intensive but also costly, so a hanging basket lifting platform is used as the construction platform. The platform is controlled up and down by the hoisting trolley. After moving one hole beam, the platform falls to the ground and is transferred to the next hole from under the bridge. The hoisting trolley and oil station and other accessories on the bridge are transferred to the next hole through the beam groove and cover beam. Shift beam position of the hole.

Due to the relatively large weight of the box girder, when using this device to translate the box girder, the number of the translation box girder can be adjusted according to the ultimate bearing capacity of the device. In addition, the device needs to be adjusted separately when the box beam is moved laterally and longitudinally, and it cannot be translated into place at one time, so special attention should be paid when using it.

The foregoing are only preferred embodiments of the present invention, and it should be understood that the present invention is not limited to the forms disclosed herein, and should not be construed as an exclusion of other embodiments, but may be used in various other combinations, modifications, and environments, and Modifications can be made within the scope of the concepts described herein, from the above teachings or from skill or knowledge in the relevant field. However, modifications and changes made by those skilled in the art do not depart from the spirit and scope of the present invention, and should all fall within the protection scope of the appended claims of the present invention.

Claims (8)

1. a subway box girder translation construction device, is characterized in that, comprises moving mechanism and sliding mechanism; The moving mechanism comprises a moving beam (1) on which a sliding first sliding block (11) and a second sliding block (12) are mounted, and the first sliding block (11) and the first sliding block (11) and the second sliding block (12) are mounted on the moving beam (1). Two sliding blocks (12) are symmetrically arranged on both sides of the moving beam (1). The top end of the jacking structure is provided with a sliding mechanism; the lower end of the moving beam (1) is provided with a movable rolling structure; The sliding mechanism includes a transverse slideway (2) and a longitudinal slideway (3) which are arranged in a "cross" shape, and are respectively installed on the transverse slideway (2) and the longitudinal slideway (3) for connecting and The roller trolley (4) that drives the box beam to move, the two ends of the transverse slideway (2) and the longitudinal slideway (3) are provided with support structures. 2. A subway box girder translation construction device according to claim 1, characterized in that a connecting plate (13) is provided between the first sliding block (11) and the second sliding block (12), so The connecting plate (13) is movably arranged on the top surface of the moving beam (1), one end of the connecting plate (13) is fixed with the first sliding block (11), and the other end is fixed with the second sliding block (12) FIXED. 3. A subway box girder translation construction device according to claim 1, characterized in that the jacking structure comprises a first jacking jack (5) and a second jacking jack (6), the first jacking jack (6) The top ends of the jacking jack (5) and the second jacking jack (6) are in active contact with the respective lateral slideways (2); the upper end outer wall of the oil cylinder of the first jacking jack (5) is fixed with a first fixed A seat (51), a second fixing seat (61) is fixed on the upper end outer wall of the oil cylinder of the second lifting jack (6), the first fixing seat (51) and the second fixing seat (61) are fixed A fixed plate (7) is connected between them. 4. A subway box girder translation construction device according to claim 3, characterized in that a push plate (52) is fixed on the top of the first sliding block (11), and one end of the push plate (52) is fixed. is fixed with the first fixing base (51), the other end of the push plate (52) is fixed with a lateral push jack (53), and the other end of the lateral push jack (53) is fixed with a fixed base (54), The other end of the fixed base (54) is fixed with the moving beam (1). 5. A subway box girder translation construction device according to claim 1, characterized in that the rolling structure comprises movable beams (8) symmetrically arranged on both sides of the moving beam (1), and the moving beam (1) The lower end of (1) is respectively fixed with a chute adapted to the movable beam (8), and the bottom surface of the other end of the movable beam (8) is respectively connected with a movable roller; the bottom surface of the movable beam (1) There are also rollers attached to both ends. 6. A subway box girder translation construction device according to claim 5, characterized in that the end of the movable beam (1) away from the movable beam (8) is symmetrically provided with a longitudinal propelling jack (9), so The other ends of the longitudinal thrust jacks (9) are respectively fixed with positioning seats (91), the positioning seats (91) are symmetrically provided with a plurality of bolts, and the positioning seats (91) are connected to the ground through a plurality of bolts. 7. A subway box girder translation construction device according to claim 1, characterized in that the support structure comprises a telescopic rod (10) for supporting, the transverse slideway (2) and the longitudinal slideway ( 3) Both ends of the telescopic rod (10) are respectively fixed with the top end, and the other end of the telescopic rod (10) is in contact with the ground. 8. according to the method for the subway box girder translation construction device described in any one of claim 1～7, it is characterized in that, comprise the steps: S1: First re-measure the elevation of the bridge pier with a leveling instrument, and adjust the height of the base cushion used to support the box girder according to the re-measured data, so as to determine the height of the base cushion and the base installation position of the bridge pier. At the same elevation, two temporary supports are placed symmetrically on the base cushion of the bridge pier, and a hydraulic jack is placed under each temporary support, and the temporary supports are used to temporarily support the box girder; S2: Then move the device to the position of the pre-drawn installation positioning line on the bridge pier, adjust the lateral propulsion jack (53) and the two longitudinal propulsion jacks (9) of the device, and let the first jacking jack 5 of the device and the second jack (6) are symmetrical on both sides of the center on the moving beam (1), and at the same time align the intersection of the transverse slide (2) and the longitudinal slide (3) with the moving beam (1) ) center, and then mark the scale on the lateral slideway and longitudinal slideway (3); after assembling, debugging and leveling the device, fix the two positioning seats (91) to the bridge pier with bolts to confirm After correct, hoist the box beam to the top of the device; S3: Raise the hydraulic jack described in S1, lift the two temporary supports to a height higher than the top surface of the roller trolley (4) of the device, and then slowly hoist the box beam onto the two temporary supports, Then adjust the height of the two hydraulic jacks, and level the box girder hanging on the two temporary supports; S4: Then slowly lower the two hydraulic jacks, and align the pre-set connection seat at the bottom of the box girder for connecting the roller trolley (4) with the roller trolley (4) on the lateral slideway (2), Connect the connecting seat to the roller trolley (4), then adjust the position of the beam-moving jack in the lateral direction of the box girder away from the translation direction, and press one end against the stopper fixed on the bridge pier, and the other end against Lean on the roller trolley (4) on the lateral slide (2), and then adjust the lateral beam shifting jacks respectively, so that the roller trolley (4) drives the box beam to move on the lateral slide (2), Move the box girder to the horizontally designed position; S5: Then lower the first jacking jack 5 and the second jacking jack 6, and shrink the telescopic rods (10) connected at both ends of the transverse slideway (2) and the longitudinal slideway (3) respectively, so that the two A temporary support is used to support the box girder at this time, the device is translated to the center line below the box girder, the steps S2 and S3 are repeated, the positions of the device and the box girder are adjusted, and the bottom of the box girder is preset. The good connecting seat for connecting the roller trolley (4) is aligned with the roller trolley (4) on the lateral slideway (2), and the connecting seat and the roller trolley (4) are connected well, and then the box beam is moved away from the translation Adjust the position of the beam shifting jack in the longitudinal direction, abut one end against the stop block fixed on the bridge pier, and the other end against the roller trolley (4) on the longitudinal slideway (3), Then adjust the longitudinal beam shifting jacks respectively, so that the roller trolley (4) drives the box beam to move on the longitudinal slideway (3), and moves the box beam to the longitudinally designed position; S6: After the box girder is in place, install the permanent support on the base cushion and the designed position, and then lower the first jacking jack (5) and the second jacking jack (6) and shrink and set at the Telescopic rods (10) on the bottom surfaces of both ends of the transverse slideway (2) and the longitudinal slideway (3), then separate the two roller trolleys (4) from the connecting seat, and withdraw from the device; then slowly descend again The height of the two hydraulic jacks, separate the two temporary supports from the bottom surface of the box girder, withdraw the temporary support, let the box girder fall on the permanent support, connect the permanent support and the box girder, and complete the translation of the box girder construction.

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