A steep slope bridge pile foundation steel platform construction device and method

Abstract

The present application relates to a kind of steep slope bridge pile foundation steel platform construction device and method, including two for clamping the end face flange and the wing plate flange clamping mechanism, for correcting the attitude of the semi-ring steel casing attitude correction mechanism, with electric hoist connection control mechanism;The clamping mechanism includes the control plate and the alignment plate that section is respectively "L" type and is connected by hinge, control wedge that is slidably arranged between the control plate and the alignment plate, with the alignment wedge that control wedge fixed connection is connected with the control wedge for the convenience material turnover selection semi-ring steel casing, form a complete steel casing after using two semi-ring steel casings and enclose, utilize electric hoist to lift and move steel casing can adapt to steep slope bridge pile foundation steel platform narrow construction area;To avoid the center of gravity position of semi-ring steel casing deviates, after being lifted, the attitude of semi-ring steel casing in the air is corrected using attitude correction mechanism, subsequent butt joint and installation are facilitated, butt joint accuracy is high, and installation efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bridge construction, in particular to a steep slope bridge pile foundation steel platform construction device and method. BACKGROUND

[0002] The steep slope bridge pile foundation steel platform construction environment is complex, the available space is small, material stacking and turnover are inconvenient, the steel casing hoisting and moving has certain requirements for the operation space, and in the harsh construction environment, the steel casing is prone to shaking due to wind blowing and bumping during hoisting and moving due to the influence of the steep slope terrain, which slows down the construction progress. SUMMARY

[0003] In order to solve the above problems existing in the prior art, the present application aims to provide a steep slope bridge pile foundation steel platform construction device and method.

[0004] The technical scheme adopted by the present application is as follows:

[0005] A steep slope bridge pile foundation steel platform construction device and method, the steep slope bridge pile foundation steel platform comprises a semi-annular steel casing composed of a cylinder, an end face flange and a wing plate flange, the construction device comprises two clamping mechanisms for clamping the end face flange and the wing plate flange, an attitude correction mechanism for correcting the attitude of the semi-annular steel casing, and a control mechanism connected with an electric hoist.

[0006] The clamping mechanism comprises a control plate and a positioning plate which are respectively in the shape of "L" and are connected by a hinge, a control wedge which is slidingly arranged between the control plate and the positioning plate, a positioning wedge which is fixedly connected with the control wedge, and a rope sleeve one for connecting the control plate and the control wedge.

[0007] The attitude correction mechanism comprises two limiting clamping grooves which are hinged to each other, and a rope sleeve two for connecting the two limiting clamping grooves.

[0008] The control mechanism comprises a bearing box, a steel rope one installed on one side of the bearing box and used for connecting the rope sleeve two, a pulley installed on one side of the bearing box, and a steel rope two having two ends fixedly connected with the control mechanism and a middle part wound around the pulley and used for connecting the two rope sleeves one.

[0009] As a preferred embodiment of the present application, the attitude correction mechanism further comprises a steel rope three fixedly connected with the bearing box and connected with the electric hoist, and a protective shell wrapped on the surface of the bearing box; the side of the bearing box away from the steel rope three is provided with a mounting space, a control motor is fixedly arranged on the inner wall of one side of the mounting space, a winch is fixedly arranged on the output shaft of the control motor, and the winch is used for winding the steel rope one.

[0010] As the preferred of the present application, the pulley is located on the side of the winch away from the steel rope three, the pulley is fixedly arranged on the rotating shaft, both ends of the rotating shaft are rotatably arranged on two steel plates respectively, one of the steel plates is fixedly connected with the protective shell, the other steel plate is fixedly connected with the protective shell through the steel plate two, the protective shell, the steel plate and the bearing box form a bearing space, the pulley is located in the bearing space, the bearing space and the mounting space are communicated, one side of the bearing space is provided with a limiting rod fixedly connected with the steel plate two, the steel rope one penetrates through the mounting space and the bearing space at the limiting rod.

[0011] As the preferred of the present application, one end of the alignment plate is fixedly provided with a fixing frame and a special-shaped plate, a fixing rod fixedly connected with the fixing frame and the special-shaped plate is arranged between the fixing frame and the special-shaped plate, a guide rod is fixedly arranged on one side of the fixing rod and located between the fixing frame and the special-shaped plate, one end of the control wedge is provided with a through hole, a alignment hole is fixedly arranged in the control wedge, and the guide rod penetrates through the through hole and is in sliding connection with the alignment hole.

[0012] As the preferred of the present application, both ends of the hinge are in sliding connection with the control plate and the alignment plate respectively, a lug one is fixedly arranged on one end of the control plate close to the control mechanism, a lug two is fixedly arranged on one end of the control plate close to the control mechanism, the rope sleeve one is connected with the lug two and the lug one, and a sleeve ring is fixedly arranged on the rope sleeve one and connected with the steel rope two.

[0013] As the preferred of the present application, one end of the control wedge away from the lug two is fixedly provided with a connecting plate, the connecting plate is fixedly connected with the alignment wedge through a link plate; the control plate and the alignment plate each include a horizontal part and a vertical part, a control block is fixedly arranged on one side of the vertical part of the control plate close to the alignment plate, an alignment block is fixedly arranged on one side of the vertical part of the alignment plate close to the control plate, and a lug three is fixedly arranged on one side of the vertical part of the alignment plate away from the alignment block.

[0014] As the preferred of the present application, the two limiting clamping grooves are connected through a rotating pin, one end of the rotating pin is fixedly provided with a counterweight chain, and the lug three cooperates with the counterweight chain.

[0015] As the preferred of the present application, one side of the limiting clamping groove close to the cylinder cooperates with the end face flange, one lug four is fixedly arranged on one side of each of the two limiting clamping grooves away from the cylinder, a rope sleeve two is fixedly arranged on one end of the steel rope one close to the limiting clamping groove, and the rope sleeve two is connected with the two lugs four.

[0016] A steep slope bridge pile foundation steel platform construction method, comprising the following steps:

[0017] S1. Platform excavation: Local excavation is carried out along the mountain ground line to obtain a construction operation platform and a construction access road; the construction operation platform is used as the construction site, and the construction access road is used to manually dig holes to bury steel casings. The steel casings are used as load-bearing components to build a steel platform to obtain a pile foundation construction platform.

[0018] S2. Slope protection: After slope excavation, slope repair, reinforcement insertion and installation of steel reinforcement cage, galvanized steel wire mesh covering, and fine stone concrete spraying are carried out in sequence. The pile foundation construction platform is then protected by mesh and shotcrete.

[0019] S3. Pier construction: Using the pile foundation construction platform as the bottom mold, the steel platform for the steep slope bridge pile foundation is obtained. The exposed part of the steel casing of the steel platform for the steep slope bridge pile foundation uses the semi-circular steel casing. The semi-circular steel casing is constructed using the aforementioned construction device for the steel platform for the steep slope bridge pile foundation.

[0020] As a preferred embodiment of the present invention, in step S3, the steel platform for the steep slope bridge pile foundation includes an upper structure consisting of a truss main beam, a support system, and a platform system; a lower structure consisting of multiple steel casings and corbel beams; and a foundation consisting of buried steel casings.

[0021] The beneficial effects of this invention are as follows: As a construction device and method for steel platform of bridge pile foundation on steep slope, this invention selects semi-circular steel casings to facilitate material turnover. Two semi-circular steel casings are used to form a complete steel casing. The steel casing is moved by an electric hoist, which can adapt to the narrow construction area of ​​the steel platform of bridge pile foundation on steep slope. In order to avoid the center of gravity of the semi-circular steel casing shift, after it is lifted, the posture of the semi-circular steel casing in the air is corrected by a posture correction mechanism, which facilitates subsequent docking and installation, with high docking accuracy and high installation efficiency. Moreover, the clamping mechanism is locked in the air by control wedges and alignment wedges, which has a large clamping force on the steel casing and can resist a certain degree of wind and bumps during the posture correction process, thus having a high safety factor. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is the present invention. Figure 1 A schematic diagram of the side view structure;

[0025] Figure 3 This is the present invention. Figure 2 A schematic diagram of the AA-direction part of the structure;

[0026] Figure 4 This is the present invention. Figure 1is a front view structural diagram of one of the clamping mechanisms of the present application

[0027] Figure 5 is a hidden rear structure diagram of the semi-annular steel casing of the present application Figure 1

[0028] Figure 6 is a front view structural diagram of the posture correction mechanism of the present application Figure 5

[0029] Figure 7 is a front view structural diagram of the alignment plate and control plate of the present application Figure 5

[0030] Figure 8 is an isometric structural diagram of one of the clamping mechanisms of the present application Figure 5

[0031] Figure 9 is a hidden rear structure diagram of the alignment plate and control plate of the present application Figure 8

[0032] Figure 10 is a structural diagram of the control wedge of the present application Figure 9

[0033] Figure 11 is a structural diagram of the guide rod of the present application Figure 9 DETAILED DESCRIPTION

[0034] In order to further illustrate the technical means and effects adopted by the present application to achieve the predetermined inventive purpose, the specific embodiments, structures, features and effects of the present application are described in detail below in combination with the drawings and preferred embodiments.

[0035] In combination with Figures 1-11 , the steep slope bridge pile foundation steel platform construction device includes a semi-annular steel casing composed of a cylinder 11, an end face flange 12 and a wing plate flange 13, the construction device includes two clamping mechanisms 15 for clamping the end face flange 12 and the wing plate flange 13, a posture correction mechanism 16 for correcting the posture of the semi-annular steel casing, and a control mechanism 17 connected with an electric hoist; the steep slope bridge pile foundation steel platform is affected by the terrain, the platform building position terrain is complex, the platform is narrow, and the operation is difficult; in order to facilitate material turnover, a semi-annular steel casing is selected, two semi-annular steel casings form a complete steel casing after being enclosed, and the electric hoist is a small lifting machinery which can adapt to the narrow construction area of the steep slope bridge pile foundation steel platform.

[0036] ​​​​​​​The clamping mechanism 15 comprises a control plate 34 and a positioning plate 35 which are both in "L" shape and connected by a hinge 43, a control wedge 37 which is slidingly arranged between the control plate 34 and the positioning plate 35, a positioning wedge 44 which is fixedly connected with the control wedge 37, a rope sleeve 40 for connecting the control plate 34 and the control wedge 37; the control plate 34 and the positioning plate 35 are both approximately in "L" shape, and the two side plates are not completely perpendicular, after the hinge 43 which is arranged at 45° is opened or closed, the whole side edge of the two side plates of the control plate 34 and the positioning plate 35 has clamping effect on the half-ring steel jacket, and the control wedge 37 and the positioning wedge 44 can further clamp the corresponding position of the half-ring steel jacket.

[0037] The posture correcting mechanism 16 comprises two limiting clamping grooves 50 which are hinged with each other, and a rope sleeve 49 for connecting the two limiting clamping grooves 50; the center of gravity of the half-ring steel jacket is offset, and after it is lifted, the posture cannot be guaranteed to be controllable, therefore the posture correcting mechanism 16 is used for correcting the posture of the half-ring steel jacket in the air, so as to facilitate subsequent butt joint and installation.

[0038] The control mechanism 17 comprises a bearing box 26, a steel rope 20 which is installed on one side of the bearing box 26 and used for connecting the rope sleeve 49, a pulley 32 which is installed on one side of the bearing box 26, and a steel rope 19 which is fixedly connected with the control mechanism 17 at two ends and used for connecting the two rope sleeves 40 at the middle part and around the pulley 32; the control wedge 37 and the positioning wedge 44 can be tightened by the rope sleeve 40, so that the side which is away from each other of the control plate 34 and the positioning plate 35 is pried, so that the side which is close to each other of the control plate 34 and the positioning plate 35 increases the extrusion degree of the end face flange 12 and the wing plate flange 13.

[0039] Beneficially, the posture correcting mechanism 16 further comprises a steel rope 21 which is fixedly connected with the bearing box 26 and connected with an electric hoist, and a protective shell 22 which is coated on the surface of the bearing box 26; the side of the bearing box 26 which is away from the steel rope 21 is provided with a mounting space 29, a control motor 28 is fixedly arranged on the inner wall of one side of the mounting space 29, a winch 27 is fixedly arranged on the output shaft of the control motor 28, and the winch 27 is used for winding the steel rope 20. The winch 27 controls the posture correcting mechanism 16, and by adjusting the horizontal position of the posture correcting mechanism 16 relative to the clamping mechanism 15, the purpose of adjusting the posture of the half-ring steel jacket is achieved, and the horizontal height of the two clamping mechanisms 15 is equal.

[0040] Beneficially, the pulley 32 is located on the side of the winch 27 away from the steel rope three 21, the pulley 32 is fixedly arranged on the rotating shaft 31, both ends of the rotating shaft 31 are rotatably arranged on two steel plates one 25 respectively, one of the steel plates one 25 is fixedly connected with the protective shell 22, and the other steel plate one 25 is fixedly connected with the protective shell 22 through the steel plate two 24, the protective shell 22, the steel plate one 25 and the bearing box 26 enclose to form a bearing space 30, the pulley 32 is located in the bearing space 30, the bearing space 30 and the mounting space 29 are communicated, one side of the bearing space 30 is provided with a limiting rod 23 fixed with the steel plate two 24, and the steel rope one 20 penetrates through the mounting space 29 and the bearing space 30 at the limiting rod 23. The intermediate position of the steel rope two 19 is lifted by the pulley 32, in actual operation, the included angle of the steel rope two 19 is smaller than that in the drawing, after the reinforcement is bound, the semi-annular steel casing can still be lifted by the device, by adjusting the initial length of the steel rope two 19, the steel rope two 19 has sufficient space after lifting the semi-annular steel casing and is not blocked by the reinforcement.

[0041] Beneficially, one end of the alignment plate 35 is fixedly provided with a fixed frame 36 and a special-shaped plate 53, a fixed rod 42 fixedly connected with the fixed frame 36 and the special-shaped plate 53 is arranged between the fixed frame 36 and the special-shaped plate 53, a guide rod 54 is fixedly arranged on one side of the fixed rod 42 and located between the fixed frame 36 and the special-shaped plate 53, a through hole 55 is arranged at one end of the control wedge block 37, an alignment hole 57 is fixedly arranged in the control wedge block 37, and the guide rod 54 penetrates through the through hole 55 and is in sliding connection with the alignment hole 57. The special-shaped plate 53 is lack of an angle relative to the fixed frame 36, and this position is used for reserving sufficient operation space for the hinge 43 to meet the normal opening and closing of the hinge 43.

[0042] Beneficially, the two ends of the hinge 43 are respectively connected with the control plate 34 and the alignment plate 35, the control plate 34 is fixedly provided with a lug one 33 at one end close to the control mechanism 17, the control plate 34 is fixedly provided with a lug two 41 at one end close to the control mechanism 17, the rope sleeve one 40 connects the lug two 41 and the lug one 33, the rope sleeve one 40 is fixedly provided with a thimble 52, and the thimble 52 is connected with the steel rope two 19. The two ends of the hinge 43 are not fixed, but are provided with a sliding groove and a sliding strip structure, and a spring is arranged in the sliding groove. Under the condition of no force, the hinge 43 and the control plate 34 and the alignment plate 35 can keep a stable posture, but when the control wedge 37 and the alignment wedge 44 are inserted, the end of the hinge 43 and the control plate 34 and the alignment plate 35 slide, and the control plate 34 and the alignment plate 35 have a weak magnetism. When the gap between the two ends of the control plate 34 and the alignment plate 35 away from each other increases, the gap between the two ends of the control plate 34 and the alignment plate 35 close to each other will not increase, but will be close to the surface of the end flange 12. Therefore, even if the two ends of the control plate 34 and the alignment plate 35 of the two clamping mechanisms are close to each other without connecting structure, they will not easily separate from the half-ring steel casing. At this time, by lifting the half-ring steel casing and tightening the rope sleeve one 40, it can be ensured that the two ends of the control plate 34 and the alignment plate 35 of the two clamping mechanisms away from each other will not open, and when the end of the hinge 43 slides to the limit position, the slightly inclined control plate 34 and the alignment plate 35 reach the maximum degree of engagement with the end flange 12, which can resist a certain degree of wind blowing and jolting.

[0043] Beneficially, the control wedge 37 is fixedly provided with a connecting plate 56 at one end away from the lug two 41, and the connecting plate 56 is fixedly connected with the alignment wedge 44 through the link plate 38; the control plate 34 and the alignment plate 35 each include a horizontal part and a vertical part, the vertical part of the control plate 34 is fixedly provided with a control block 45 at one side close to the alignment plate 35, the vertical part of the alignment plate 35 is fixedly provided with an alignment block 46 at one side close to the control plate 34, and the vertical part of the alignment plate 35 is fixedly provided with a lug three 39 at one side away from the alignment block 46.

[0044] Beneficially, the two limiting clamping grooves 50 are connected through a rotating pin 48, one end of the rotating pin 48 is fixedly provided with a counterweight chain 47, and the lug three 39 cooperates with the counterweight chain 47. The space on the lug three 39 and the counterweight chain 47 can cooperate, and when the half-ring steel casing is not loaded, each mechanism will not be randomly wound.

[0045] Beneficially, the limiting clamping groove 50 is matched with the end face flange 12 on one side close to the barrel 11, and two limiting clamping grooves 50 are respectively fixed with a hanging ear four 51 on the side away from the barrel 11, the steel rope one 20 is fixed with a rope sleeve two 49 on one end close to the limiting clamping groove 50, and the rope sleeve two 49 is connected with two hanging ear fours 51. After the rope sleeve two 49 is tightened, the two limiting clamping grooves 50 can be close to each other, and the triangle formed by the limiting clamping grooves 50 and the end face flange 12 is more stable, which is beneficial to the posture correcting mechanism 16 to be kept in the middle position of the end face flange 12, and facilitates alignment through the counterweight chain 47.

[0046] A steep slope bridge pile foundation steel platform construction method, comprising the following steps:

[0047] S1, platform excavation; local excavation is carried out along the ground line of the mountain body to obtain a construction operation platform and a construction access; the construction operation platform is used as a construction site, the construction access is used, a steel casing is buried by manual excavation, a steel platform is erected by taking the steel casing as a force member, and a pile foundation construction platform is obtained;

[0048] S2, slope protection; slope excavation, post slope repair, reinforcing bar insertion, reinforcing cage arrangement, galvanized steel wire mesh hanging, and fine stone concrete spraying are sequentially carried out to protect the pile foundation construction platform by mesh spraying;

[0049] S3, cap construction; the pile foundation construction platform is obtained by taking the pile foundation construction platform as a bottom mold, the outer exposed part of the steel casing of the steep slope bridge pile foundation steel platform is used, and the semi-annular steel casing is constructed by the steep slope bridge pile foundation steel platform construction device.

[0050] Beneficially, in step S3, the steep slope bridge pile foundation steel platform comprises an upper structure composed of a truss main beam, a support system, and a table surface system, a lower structure composed of a plurality of steel casings and a corbel beam, and a foundation base composed of a buried steel casing.

[0051] The working principle of the present application is as follows:

[0052] Platform excavation; local excavation along the ground line of the mountain body to obtain a construction platform and a construction road; using the construction platform as a construction site and using the construction road, a steel casing is buried by manual hole digging, a steel platform is erected using the steel casing as a force-bearing component to obtain a pile foundation construction platform; according to design requirements, a certain depth is excavated, and the slope of the excavation is less than 1:0.5. The center position of the steel platform is measured and released, and then 1.0 m is released outward as a work space on each side of the steel platform, and the excavation boundary line is released according to the slope requirements. After the axis position of the steel platform foundation is checked and found to be correct, the excavation is performed, and to facilitate checking and to ensure that the foundation matches the design, the longitudinal and transverse axes of the steel platform are led from the foundation pit to a safe place, and the axis piles are effectively protected. The steel casing buried work platform is excavated by a small excavator combined with manual methods. Due to the limitations of the steep slope working surface, the steel casing buried work platform at a single pile site must be not less than 5*5 m.

[0053] Excavation slope protection; after the soil excavation on one side of the steel platform, net spraying protection is performed to prevent landslides and soil sliding after excavation; including slope excavation, inserting reinforcement, arranging a steel reinforcement framework, surface galvanized steel wire netting, and spraying fine concrete.

[0054] Pile cap construction; using the pile foundation construction platform as a base mold, the steep slope bridge pile foundation steel platform is obtained, and the outer exposed part of the steel casing of the steep slope bridge pile foundation steel platform uses the semi-ring steel casing, and the buried part uses the buried steel casing.

[0055] The buried steel casing is wrapped with C30 reinforced concrete with a thickness of 50 cm, and the buried steel casing is a permanent casing with a top surface located not less than 0.5 m below the ground surface, so that it becomes a wellhead enclosure to block the rolling of soil and stones and other objects from the well into the well to prevent injury, facilitate water blocking and positioning, and facilitate the welding construction of the first exposed steel casing and the buried steel casing; the total length of the buried steel casing is not less than 2 m, and the height of each section is 1.0 m, which is excavated, sunk, and poured with reinforced concrete.

[0056] The excavation sequence of each steel casing pile site is from the downhill to the uphill, and adjacent holes cannot be performed at the same time. According to the actual situation on site, one hole is opened at each pier site, and the next hole is constructed after the steel casing construction of the previous hole is completed and the concrete strength reaches 75%. The excavation method is to excavate layer by layer from top to bottom using picks and shovels, and to break hard soil or large boulders using hammers and drills. The order of excavating soil is to excavate the middle first and then the periphery. The excavated soil in the hole is loaded into a bucket, and a self-made lifting device is used to vertically transport the soil to the platform, and then the soil is transported to the designated soil and stone area at the foot of the slope through a chute. The casing is installed by manual operation with an electric hoist, and the casings are firmly welded together. The casings are excavated and sunk.

[0057] After the hole is dug and the buried steel cylinder is lowered, the transverse steel bars are installed first, then the circumferential steel bars are installed and welded or tied.

[0058] The semi-annular steel cylinder is used in combination with the steep slope bridge pile foundation steel platform construction device for construction. The semi-annular steel cylinder is adapted in size to the buried steel cylinder.

[0059] In the initial state, the semi-annular steel cylinders are stacked at the designated position of the pile foundation construction platform, the length of the steel rope two 19 is adjusted and fixed, and the winch 27 controls the attitude adjusting mechanism 16 to be in a suitable position, so that the two clamping mechanisms 15 are naturally suspended on the attitude adjusting mechanism 16 after being lowered;

[0060] The electric hoist is started to move the clamping mechanism 15 and the attitude adjusting mechanism 16 to the vicinity of the semi-annular steel cylinder, the clamping mechanism 15 and the attitude adjusting mechanism 16 are manually separated, the two clamping mechanisms 15 are buckled to the two ends of the end flange 12 of the target semi-annular steel cylinder through the opening and closing hinge 43, and the attitude adjusting mechanism 16 is installed at the middle position of the end flange 12.

[0061] The electric hoist is started to control the control mechanism 17 to rise; during this process, the steel rope two 19 and the steel rope one 20 are respectively tightened to drive the target semi-annular steel cylinder to be about 1m away from the ground, and the length relationship of the steel rope two 19 and the steel rope one 20 is not equal, so that the target semi-annular steel cylinder is in an inclined state; as the steel rope two 19 is tightened, the steel rope two 19 pulls the rope sleeve one 40 through the thimble 52, so that the rope sleeve one 40 is in a triangular state and the base of the triangle gradually shortens, causing the ear two 41 to gradually approach the ear one 33, the control wedge 37, the alignment hole 57 and the alignment wedge 44 move together with the ear two 41, the alignment hole 57 and the guide rod 54 slide, causing the control plate 34 and the alignment plate 35 to gradually increase the distance on the side close to the control wedge 37 and gradually decrease the distance on the side away from the control wedge 37, and the side away from the control wedge 37 is buckled more tightly as the steel rope two 19 is tightened. Before the steel rope two 19 is loosened, the control plate 34 and the alignment plate 35 can fully bite the end flange 12 and the wing plate flange 13 of the target semi-annular steel cylinder, so that they will not easily fall off due to shaking.

[0062] Under the action of the counterweight chain 47, the attitude adjusting mechanism 16 has a tendency to fall on one side, the steel rope 20 is tightened, the rope sleeve 2 is forced to be triangular, and the angle of the two limiting slots 50 has a tendency to further reduce; the control motor 28 is started, the control motor 28 drives the winch 27 to rotate, the winch 27 controls the steel rope 20 to be retracted or extended, so that the end flange 12 of the semi-annular steel casing gradually becomes horizontal, and whether the attitude of the semi-annular steel casing is qualified is determined by observing the parallelism of the counterweight chain 47 and the casing 11; after the attitude of the semi-annular steel casing is qualified, the electric hoist is used to lift and move the semi-annular steel casing to the top of the buried steel casing or the last semi-annular steel casing, and then the semi-annular steel casing is lowered and the position of the semi-annular steel casing is adjusted, so that the semi-annular steel casing is coaxial with the last steel casing and is connected.

[0063] If the target semi-annular steel casing is not the first one, the counterweight chain 47 is used to make the wing flange 13 of the target semi-annular steel casing correspond to the last steel casing, so that the two adjacent semi-annular steel casings are rotated by 90 degrees.

[0064] After the target semi-annular steel casing is preliminarily fixed with the last steel casing by manually installing a plurality of positioning bolts, the electric hoist is started, the control mechanism 17 is moved downward, the clamping mechanism 15 and the attitude adjusting mechanism 16 are removed, the lug 39 is hung on the counterweight chain 47, the steep slope bridge pile foundation steel platform construction device lifts the next semi-annular steel casing, and the remaining bolts are manually installed to ensure that the target steel casing is completely fixed with the last steel casing.

[0065] M20 bolts are used to connect each steel casing, and after the construction is completed, the torque of each bolt is checked.

[0066] After the construction of all the steel casings is completed, corbels are installed, including corbel releasing measurement, rust removal of the surface of the steel pipe pier welding position, corbel point finding, preliminary positioning spot welding, accurate positioning measurement, corbel correction, and corbel welding; finally, the construction of the bailey frame, the installation of the unloading support, the erection of the bailey frame girder, the installation of the distribution beam, the construction of the steel platform panel, and the construction of the steel platform transverse anti-overturning are sequentially performed to complete the construction of the steep slope bridge pile foundation steel platform.

[0067] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, change, and modification of the above embodiments, which does not depart from the technical solution of the present application, are still within the scope of the present application.

Claims

1. A steep slope bridge pile foundation steel platform construction device, characterized in that: The steep slope bridge pile foundation steel platform comprises a semi-annular steel casing composed of a cylinder, an end face flange and a wing plate flange, the construction device comprises two clamping mechanisms for clamping the end face flange and the wing plate flange, an attitude correction mechanism for correcting the attitude of the semi-annular steel casing, and a control mechanism connected with an electric hoist; The clamping mechanism comprises a control plate and a positioning plate which are respectively in the shape of "L" and are connected by a hinge, a control wedge which is slidingly arranged between the control plate and the positioning plate, a positioning wedge which is fixedly connected with the control wedge, and a rope sleeve one for connecting the control plate and the control wedge; The attitude correction mechanism comprises two limiting clamping grooves which are hinged to each other, and a rope sleeve two for connecting the two limiting clamping grooves; The control mechanism comprises a bearing box, a steel rope one which is installed on one side of the bearing box and is used for connecting the rope sleeve two, a pulley which is installed on one side of the bearing box, and a steel rope two which has two ends fixedly connected with the control mechanism and a middle part winding around the pulley and used for connecting the two rope sleeves one; One end of the positioning plate is fixedly provided with a fixing frame and a special-shaped plate, a fixing rod is arranged between the fixing frame and the special-shaped plate and is fixedly connected with both, a guide rod is fixedly arranged on one side of the fixing rod and located between the fixing frame and the special-shaped plate, one end of the control wedge is provided with a through hole, and a positioning hole is fixedly arranged in the control wedge, and the guide rod penetrates through the through hole and is slidingly connected with the positioning hole; Both ends of the hinge are slidingly connected with the control plate and the positioning plate respectively, one end of the control plate close to the control mechanism is fixedly provided with a lug one, one end of the control plate close to the control mechanism is fixedly provided with a lug two, the rope sleeve one connects the lug two and the lug one, a sleeve ring is fixedly arranged on the rope sleeve one, and the sleeve ring is connected with the steel rope two.

2. A steep slope bridge pile foundation steel platform construction device according to claim 1, characterized in that: The attitude correction mechanism further comprises a steel rope three which is fixedly connected with the bearing box and is connected with the electric hoist, and a protective shell which is coated on the surface of the bearing box; one side of the bearing box away from the steel rope three is provided with a mounting space, a control motor is fixedly arranged on the inner wall of one side of the mounting space, a winch is fixedly arranged on the output shaft of the control motor, and the winch is used for winding the steel rope one.

3. A steep slope bridge pile foundation steel platform construction device according to claim 2, characterized in that: The pulley is located on the side of the winch away from the steel rope three, the pulley is fixedly arranged on a rotating shaft, both ends of the rotating shaft are rotatably arranged on two steel plates one, one of the steel plates one is fixedly connected with the protective shell, the other steel plate one is fixedly connected with the protective shell through a steel plate two, the protective shell, the steel plate one and the bearing box jointly form a bearing space, the pulley is located in the bearing space, the bearing space and the mounting space are communicated, one side of the bearing space is provided with a limiting rod fixedly connected with the steel plate two, and the steel rope one penetrates through the mounting space and the bearing space at the limiting rod.

4. A steep slope bridge pile foundation steel platform construction device according to claim 3, characterized in that: The control wedge is fixed with a connecting plate at one end away from the lug two, and the connecting plate is fixedly connected with the alignment wedge through a link plate; the control plate and the alignment plate each include a horizontal part and a vertical part, the vertical part of the control plate is fixed with a control block at a side close to the alignment plate, the vertical part of the alignment plate is fixed with an alignment block at a side close to the control plate, and a lug three is fixed at a side of the vertical part of the alignment plate away from the alignment block.

5. A steep slope bridge pile foundation steel platform construction device according to claim 4, characterized in that: The two limiting clamping grooves are connected through a rotating pin, one end of the rotating pin is fixed with a counterweight chain, and the lug three cooperates with the counterweight chain.

6. A steep slope bridge pile foundation steel platform construction device according to claim 5, characterized in that: The limiting clamping groove at a side close to the barrel cooperates with the end face flange, and one lug four is fixed at a side of each of the two limiting clamping grooves away from the barrel, one end of the steel rope one close to the limiting clamping groove is fixed with a rope sleeve two, and the rope sleeve two connects the two lugs four.

7. A method for constructing a steep slope bridge pile foundation steel platform, characterized in that, The method comprises the following steps: S1, platform excavation; local excavation is performed along a mountain ground line to obtain a construction operation platform and a construction access; the construction operation platform is used as a construction site, the construction access is used, artificial hole digging is used to bury a steel casing, a steel platform is erected using the steel casing as a force bearing component, and a pile foundation construction platform is obtained; S2, slope protection; slope excavation, slope repair, reinforcing bar insertion, reinforcing bar framework arrangement, galvanized steel wire mesh hanging, and fine concrete spraying are sequentially performed to protect the pile foundation construction platform by mesh spraying; S3, cap construction; the pile foundation construction platform is used as a bottom mold to obtain the steep slope bridge pile foundation steel platform, the outer exposed part of the steel casing of the steep slope bridge pile foundation steel platform uses the semi-annular steel casing, and the semi-annular steel casing is constructed using the steep slope bridge pile foundation steel platform construction device according to any one of claims 1-6.

8. The method according to claim 7, wherein the method further comprises the steps of: providing a plurality of steel platforms; and connecting the plurality of steel platforms to the plurality of piles. In step S3, the steep slope bridge pile foundation steel platform includes an upper structure composed of a truss main beam, a support system, and a table surface system, a lower structure composed of multiple steel casings and corbel beams, and a foundation base composed of buried steel casings.

Images