CN210122690U - Spherical hinge mould for bridge rotation upper rotary table displacement method construction - Google Patents

Abstract

The utility model discloses a carousel displacement method construction is with ball pivot mould on bridge turns, including the pivot with fix the epaxial blade unit of commentaries on classics, the cutting edge envelope curve of blade unit is unanimous with the ball pivot surface great circle. The utility model discloses can form the surperficial smooth sunken unanimous with the ball pivot shape in sand pond surface, and form the one deck soft sand layer on sunken surface, have elastic buffer's effect, avoid the harm to the ball pivot surface.

Description

Spherical hinge mould for bridge rotation upper rotary table displacement method construction

Technical Field

The utility model relates to a bridge construction technology, more specifically relates to a carousel displacement method construction is with ball pivot mould on bridge turns.

Background

Bridge rotation construction is a mature technology, however, the problem that construction personnel are troubled by rotation construction, particularly long construction period of bearing platform construction, is always the problem, and the construction period of general rotation construction needs 10-12 months.

The bridge swivel bearing platform is complex in structure, and the structure of the bearing platform needs to be divided into an upper structure and a lower structure for construction in sequence. The lower bearing platform is a bearing structure when all bridges rotate, a lower spherical hinge is embedded in the top surface of the lower bearing platform, the lower spherical hinge is tightly connected with an upper spherical hinge of the upper turntable through a tetrafluoro slip sheet, and the lower bearing platform rotates through a pin shaft at the axis. The upper bearing platform (upper turntable) and the beam body rotate through the upper spherical hinge. According to the traditional construction process, a lower bearing platform is constructed firstly, a spherical hinge and a slideway are embedded, concrete is poured, and an upper rotary table can be constructed after the strength meets the design requirement. The method is more traditional, the period is particularly long, if the swivel relates to a cross-railway or a highway, the influence on the safe and environment-friendly operation of the line is particularly large, the related range is particularly wide, and therefore the problem to be solved urgently is how to design a technology for shortening the construction period without shortening the quality.

Disclosure of Invention

An object of the utility model is to overcome the above-mentioned defect that prior art exists, provide a carousel displacement method construction is with ball pivot mould on the bridge is turned for the shaping ball pivot is sunken on the sand pond that is used for supporting the ball pivot of the construction department of going on the carousel in step, in order to form the space of installation ball pivot.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a spherical hinge die for bridge swivel upper turntable displacement method construction is characterized by comprising a rotating shaft and a blade unit fixed on the rotating shaft, wherein the blade envelope curve of the blade unit is consistent with the outer surface great circle of a spherical hinge.

Preferably, the blade unit comprises two first and second blades at an angle to each other.

Preferably, the cutting edges of the first and second blades are serrated in shape.

Preferably, the cutting edges of the second blade are staggered from the cutting edges of the first blade.

Preferably, the sides of the blade unit have blade stiffeners.

According to the above technical scheme, the utility model discloses can form the glossy sunken of surface on sand pond surface, and form the one deck soft sand layer on sunken surface, have elastic buffer's effect, avoid the harm to the ball pivot surface.

Drawings

FIG. 1 is a construction flow chart of a displacement method construction method of a rotary table on a bridge rotator;

FIG. 2 is a front view after completion of sand basin filling;

FIG. 3 is a cross-sectional view after completion of sand basin filling;

FIG. 4 is a schematic diagram of the spherical hinge mold of the present invention forming a depression in the sand basin;

FIG. 5 is a cross-sectional view of the spherical hinge mold of the present invention after forming a recess in a sand basin and protecting the recessed surface;

FIG. 6 is a front view of the completed ball joint installation;

FIG. 7 is a cross-sectional view after completion of the ball-and-socket joint installation;

FIG. 8 is a front view of the completed turret pour;

FIG. 9 is a cross-sectional view after completion of the pouring of the turntable;

FIG. 10 is a front view of the completed track;

FIG. 11 is a cross-sectional view after completion of track construction;

fig. 12 is a front view after pouring of the pier seat is completed;

fig. 13 is a cross-sectional view after the pier seat pouring is completed;

FIG. 14 is a front view of the upper deck resting on the track;

FIG. 15 is a cross-sectional view of the upper deck landing on the track;

FIG. 16 is a front view before longitudinal translation;

FIG. 17 is a front view in longitudinal translation;

FIG. 18 is a front view after longitudinal translation;

FIG. 19 is a front view before vertical translation;

FIG. 20 is a side view in vertical translation;

FIG. 21 is a longitudinal side view in horizontal adjustment;

FIG. 22 is a side view after installation;

fig. 23 is a front view of a spherical hinge mold according to an embodiment of the present invention;

fig. 24 is a side view of a ball-and-socket joint mold in an embodiment of the invention.

In the figure, 101 is a steel pad, 102 is a steel template, 103 is a nut, 104 is a counter-pull rod, 105 is standard sand, 106 is a bedding concrete, 107 is a pin hole, 108 is geotextile, 109 is a waterproof material, 2 is an upper bearing platform, 201 is an upper spherical hinge, 202 is a supporting foot, 203 is a pin shaft, 204 is a rotary table, 205 is a pier seat, 300 is a strip foundation, 301 is I-shaped steel, 302 is a pad beam, 303 is a horizontal longitudinal jack, 304 is a horizontal longitudinal reaction seat, 305 is a span beam, 306 is a cross beam, 307 is a stand column, 308 is a longitudinal beam, 309 is a first jack group, 310 is a second jack group, 311 is a transverse beam, 312 is a transverse translation jack, 313 is a transverse horizontal jack reaction seat, 4 is a spherical hinge mold, 401 is a pin shaft, 402 is a stiffening rib, 403 is a first blade, and 404 is a second blade.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings.

In the following detailed description of the embodiments of the present invention, for the sake of clarity of the structure of the present invention, it is to be understood that the structure shown in the drawings is not drawn to scale, and is partially enlarged, deformed and simplified, and therefore the present invention is not limited thereto.

Referring to fig. 1, the construction method of the rotary table displacement method on the bridge rotation body is characterized by comprising the following steps

S1: and (4) carrying out lower bearing platform construction at the designed position according to the construction requirement.

S2: and selecting a position which does not influence the construction of the lower bearing platform near the construction position of the lower bearing platform, and performing the construction of the upper bearing platform. The construction of the upper bearing platform and the construction of the lower bearing platform are carried out synchronously, so that the construction time can be effectively reduced. The construction of the upper bearing platform comprises the following steps

S21: pouring cushion layer concrete; pouring cushion concrete according to the structural size of the upper turntable, wherein a pin shaft hole is formed in the center of the cushion concrete, the axis of the pin shaft hole is parallel to the central axis of the lower bearing platform, a virtual connecting line between the pin shaft hole and the center of the lower bearing platform is called a central line, the horizontal direction parallel to the central line is called a horizontal longitudinal direction, and the horizontal direction perpendicular to the central line is called a horizontal transverse direction.

S22: forming a sand pool; the vertical sand pool steel templates are lined by taking the pin shaft hole as the center according to the radius of the upper rotary table, the supported sand pool steel templates are distributed in a rectangular shape, and standard sand is filled in the four-side sand pool steel templates to form a sand pool.

The front view and the cross section of the sand pool and the cushion concrete are shown in figures 2 and 3, the pin shaft hole is used as the center, the periphery of the turntable radius is marked, the rectangular steel template is supported, the diagonal rods, the steel gaskets and the nuts are adopted for reinforcement vertically and horizontally, and the middle is filled with standard sand. And (3) tamping the standard sand by using a tamper every 15cm, so as to ensure that the bearing capacity of the foundation is not less than 180 Kpa.

S23: repairing the sand pool; the standard sand removed is in the shape of a sunken segment with the same radius as the spherical hinge. After finishing the sand pool shaping, as shown in fig. 4, after the standard sand filling height meets the requirement, the spherical hinge mold is inserted into the pin hole, and the spherical hinge mold is rotated to enable the planar standard sand to form an arc cone shape which is the same as that of the spherical hinge and to be tightly fit with the spherical hinge.

In this embodiment, the sand pool is modified by using a spherical hinge mold, the spherical hinge mold comprises a rotating shaft with the same diameter as the pin shaft and a blade unit fixedly connected with the rotating shaft, the blade unit is provided with a cutting edge, the envelope curve of the cutting edge is consistent with the great circle of the outer surface of the spherical hinge, the rotating shaft is led into the pin shaft of the sand pool, then the blade is rotated downwards, and a recess consistent with the spherical hinge in shape is formed on the surface of the sand pool.

The blade unit has blade stiffeners on its face to improve the strength of the blade.

The shape of the blade may be serrated.

Preferably, referring to fig. 23 and 24, the blade unit is composed of two blades, the two blades form a certain angle with each other, the blade shapes of the first blade and the second blade are both saw-toothed, the blade of the second blade is staggered with the blade of the first blade, the first blade mainly functions in forming, a recess is formed on the surface of the sand pool, a ridge-ditch landform is formed on the sand pool due to the saw-toothed blade, the second blade mainly functions in shaping, the ridge-ditch is flattened, a flat soft sand layer is formed on the upper surface of the recess, and the soft sand layer can play a role in elastic buffering, so that the outer surface of the ball hinge is prevented from being damaged.

S24: protecting a sand pool; and paving a layer of soft geotextile on the surface of the standard sand after the shape modification, paving a layer of waterproof material on the geotextile, and reserving the pin shaft holes of the geotextile and the waterproof material for leaking.

The sand pool protection is as shown in fig. 5, the redundant standard sand on the surface of the arc cone is cleaned, a layer of soft geotextile is laid on the surface of the standard sand, and a layer of waterproof material is laid on the geotextile.

S25: mounting a spherical hinge; and (3) installing a spherical hinge, inserting a spherical hinge pin shaft into the pin shaft hole in a centering manner, and installing support legs around the spherical hinge, wherein the support legs are strictly uniformly distributed according to the center of the pin shaft.

As shown in fig. 6 and 7, after geotextile and waterproof materials are laid on the surface of standard sand, spherical hinges are installed, the spherical hinges are installed by a crane, the spherical hinges are required to be balanced and prevented from inclining, centering pin shafts are inserted, and then supporting legs are installed around the spherical hinges and are strictly uniformly distributed according to the centers of the pin shafts.

S26: filling a sand body; and filling standard sand around the spherical hinge and the support legs, tamping layer by layer, and stopping filling to the lower bottom surface of the upper turntable.

S27: pouring the turntable; and supporting a turntable bottom template around the spherical hinge and the support leg, arranging a turntable shaping steel template around the turntable bottom template, supporting and reinforcing, and pouring concrete into a space enclosed by the turntable bottom template and the spherical hinge shaping steel template to form the turntable. The front view and the cross-sectional view of the turntable after casting are shown in fig. 8 and 9.

S3: performing track construction, wherein the front view and the cross-sectional view after the track construction is completed are shown in fig. 10 and 11, and the track construction comprises the following steps

S31: constructing a strip foundation; the method comprises the steps of measuring and paying off on two sides of a bearing platform, pouring two strip-shaped foundations, enabling the strip-shaped foundations to be parallel to a connecting line between a pin shaft hole and the center of a lower bearing platform, reserving a certain distance from the length of one end of each strip-shaped foundation to the edge, close to the construction position of the upper bearing platform, of a foundation pit of the lower bearing platform, and enabling the other end of each strip-shaped foundation to meet the setting requirement of a horizontal longitudinal jack.

S32: fixing a track; and a steel rail is fixed on the top surface of each strip foundation respectively, and the axial direction of the steel rail is consistent with that of the strip foundation to form two rail beams.

In this embodiment, the track is connected with the bar foundation through the bolt, the bolts are embedded in the top surface of the bar foundation at intervals, half of the length of each bolt is embedded in concrete, the other half of the length of each bolt is exposed outside, a screw is arranged at the exposed end, and the track is fixed on the bar foundation through the bolts. The steel rail is an I-beam.

S4: pier foundation construction

S41: mounting a pad beam; and each steel rail is provided with a pad beam, and the two pad beams are provided with pier seat bottom templates. A schematic view of the installation of the bolster is shown in fig. 10 and 11.

S42: pouring a pier seat; the bottom formwork outside the upper rotating disc is supported, the pier seat shaping steel formwork is arranged around the pier seat bottom formwork and is reinforced, concrete is poured into a space enclosed by the pier seat bottom formwork and the pier seat shaping steel formwork to form a pier seat, and the pier seat shaping steel formwork is detached after the pier seat concrete meets the design strength.

The pier seat is the uppermost part of the upper bearing platform, the pier body is connected with the upper bearing platform, and the front view and the section view after pouring are shown in fig. 12 and fig. 13.

S43: the upper bearing platform is arranged on the track beam; and (3) removing the turntable bottom formwork, the turntable sizing steel formwork and the pier seat bottom formwork, and drawing out all standard sand to enable the bearing platform to fall on the track beam integrally to bear force, as shown in fig. 14 and 15.

S5: and (5) horizontal and longitudinal translation construction. In this embodiment, a horizontal longitudinal jack is used to transfer the upper bearing platform to just above the lower bearing platform. Specifically, the method comprises the following steps:

s51: installing a horizontal longitudinal jack; and welding a track horizontal longitudinal jack counterforce seat on a steel track on the non-lower cushion cap foundation pit side of the upper cushion cap, wherein the distance between the track horizontal longitudinal jack counterforce seat and the upper cushion cap needs to meet the installation requirement of the track horizontal longitudinal jack, and installing the track horizontal longitudinal jack after the track horizontal longitudinal jack counterforce seat is welded.

S52: constructing a span beam; two span beams are constructed above the lower bearing platform, one end of each span beam is respectively and stably connected with one track beam, the other end of each span beam is erected on the ground of the lower bearing platform foundation pit, the top surfaces of the two span beams and the top surfaces of the two track beams are located in the same horizontal plane, and a cross beam is arranged between the two span beams. The span beam is a main component spanning a foundation pit of the lower bearing platform, and is made of section steel in the embodiment, and the two span beams are connected through a cross beam to improve stability.

In this embodiment, the middle of the span beam and the lower bearing platform are supported by the upright posts.

S53: longitudinally translating; and horizontally and longitudinally moving the upper bearing platform by using a rail horizontal longitudinal jack to enable the upper bearing platform to slide upwards the lower bearing platform, horizontally and longitudinally translating the upper bearing platform to the cross beam through the rail until the upper bearing platform is right above the lower bearing platform, and aligning the center line of the pin shaft of the upper bearing platform with the center of the lower bearing platform.

FIGS. 16-18 are front views before, during, and after longitudinal translation, respectively.

S6: and (5) vertically moving and constructing, namely vertically lowering the upper bearing platform until the lower end of the upper spherical hinge pin shaft hole is slightly higher than the upper end of the pin shaft of the lower spherical hinge. In this embodiment, two sets of vertical jacks are used to complete the operation, and the specific steps include:

s61: arranging a vertical jack; firstly, marking a point at each of four corners of a lower bearing platform, numbering the four points as ABCD four points clockwise, wherein an AB point connecting line and a CD point connecting line are respectively parallel to a central line, and the point A and the point D, and the point B and the point C are respectively symmetrical about the central line;

2 vertical jacks are respectively arranged at each point, the connecting line of the two vertical jacks is perpendicular to the central line, the vertical jack close to the central line is marked as a1 st group of vertical jacks, the vertical jack far away from the central line is marked as a2 nd group, and 8 vertical jacks are arranged on the lower bearing platform and respectively marked as No. A1, A2, B1, B2, C1, C2, D1 and D2 vertical jacks;

the distance between the vertical jack of the 1 st group and the central line is larger than the distance between the supporting leg and the central line and smaller than the distance between the outermost side of the pier seat and the central line.

S62: welding a connecting beam of the vertical jack; welding a first longitudinal beam at the top ends of the A2 vertical jack and the B2 vertical jack; welding a second longitudinal beam at the top ends of the A1 vertical jack and the B1 vertical jack; welding a third longitudinal beam at the top end of the vertical jack No. D1 and the top end of the vertical jack No. C1; welding a fourth longitudinal beam at the top end of the vertical jack No. D2 and the top end of the vertical jack No. C2; the first longitudinal beam, the second longitudinal beam, the third longitudinal beam, the fourth longitudinal beam and the lower surface of the pier seat are contacted through the first transverse beam and the second transverse beam; the first transverse beam and the second transverse beam are respectively positioned on two sides of the pier seat.

The layout of the connecting beam and the vertical jack after the arrangement is finished is shown in figure 19.

S63: moving vertically; lifting the 1 st group of vertical jacks, jacking the upper bearing platform, and removing the cross beam (span beam) to enable the 1 st group of vertical jacks to completely bear the weight of the upper bearing platform; lowering the 1 st group of vertical jacks to enable the upper bearing platform to fall onto the 4 second groups of vertical jacks and enable the 1 st group of vertical jacks to be separated from the transverse beam; and then lowering the 2 nd group of vertical jacks to enable the upper bearing platform to fall onto the 4 first group of vertical jacks and enabling the 2 nd group of vertical jacks to be separated from the transverse beam. The process schematic of the vertical movement is shown in fig. 20.

And repeatedly executing the step until the lower end of the pin shaft hole of the upper spherical hinge is slightly higher than the upper end of the pin shaft of the lower spherical hinge.

S7: and (4) performing horizontal adjustment construction, wherein the position of the upper bearing platform is horizontally adjusted, so that the shaft hole of the upper spherical hinge pin is aligned with the pin shaft of the lower spherical hinge, and the upper bearing platform is continuously lowered after the requirements are met. In this embodiment, the construction of horizontal adjustment is still completed by using the jack, which specifically includes the following steps:

s71: arranging a transverse translation jack; one end of the first transverse beam and one end of the second transverse beam are respectively provided with a transverse horizontal jack reaction seat, each transverse horizontal jack is arranged on each reaction seat, one end of the first transverse beam and one end of the second transverse beam are respectively provided with a longitudinal horizontal jack reaction seat, and each longitudinal horizontal jack is arranged on each reaction seat. Fig. 21 is a schematic view of the installation of a lateral horizontal jack reaction socket and a lateral horizontal jack.

S72: transversely translating; and (3) adjusting the position of the upper bearing platform by using the transverse horizontal jack and the longitudinal horizontal jack to enable the shaft hole of the upper spherical hinge pin to be aligned with the pin shaft of the lower spherical hinge, and continuing to use the vertical jack to descend the upper bearing platform after the requirements are met to enable the spherical hinge to completely fall on the lower bearing platform to complete construction, as shown in fig. 22.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims (5)

1. A spherical hinge die for bridge swivel upper turntable displacement method construction is characterized by comprising a rotating shaft and a blade unit fixed on the rotating shaft, wherein the blade envelope curve of the blade unit is consistent with the outer surface great circle of a spherical hinge.

2. The spherical hinge mold of claim 1, wherein the blade unit comprises two first and second blades angled with respect to each other.

3. The spherical hinge mold according to claim 2, wherein the cutting edges of the first blade and the second blade are serrated.

4. The spherical hinge mold of claim 3, wherein the cutting edges of the second blades are staggered from the cutting edges of the first blades.

5. The spherical hinge mold of claim 1, wherein the sides of the blade unit have blade stiffeners.

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