CN219862922U - Pre-buried tower crane foundation taking foot pier as support - Google Patents

Abstract

The utility model relates to an embedded tower crane foundation taking a foot pier as a support, which comprises a pier and a cast-in-situ box girder end beam, wherein two pier part embedded pivot pairs distributed on two sides of the support along a longitudinal bridge direction are embedded in the upper end surface of the pier, two pier part embedded pivot pairs of the same pier part embedded pivot pair are distributed along a transverse bridge direction, four beam part embedded pivot and a rectangular steel frame embedded with a set steel plate supported at the upper end of the four beam part embedded pivot in a one-to-one correspondence manner are embedded in the cast-in-situ box girder end beam, the four pier part embedded pivot are detachably connected with the four beam part embedded pivot in a one-to-one correspondence manner, and the four positioning steel plates are used for supporting four supporting points at the bottom of the tower crane in a one-to-one correspondence manner. The utility model aims to provide a pre-buried tower crane foundation which does not occupy road surfaces on two sides of a ballast, has large hoisting radius and large bearing capacity and takes a foot pier as a support, and solves the problem that a tower crane for an ultra-wide box girder without a tower crane installation space beside an overhead can not be installed.

Description

Pre-buried tower crane foundation taking foot pier as support

Technical Field

The utility model relates to the technical field of buildings, in particular to a pre-buried tower crane foundation taking a foot pier as a support.

Background

With the high-speed development of economy, the wider the urban roads and viaducts are, the wider the width of the cast-in-situ box girder of the viaduct is (hereinafter referred to as ultra-wide box girder) over 60 m. The method for transporting construction materials and small-sized machines and tools by installing the tower crane beside the cast-in-situ box girder pier is a mature and efficient construction method. However, the construction environment is complex, and the construction of the ultra-wide section cast-in-situ box girder faces the difficult problem that the installation foundation of the crane is difficult for the existing ground road to pass and to be close to the high-voltage transmission line. The construction case that the tower crane penetrates through the beam by pre-opening the hole at the wing plate of the cast-in-situ box beam appears in the engineering practice. However, the wing plate perforating method is difficult to solve the requirements of the construction hoisting radius and hoisting weight of the ultra-wide box girder aiming at the ultra-wide bridge.

Disclosure of Invention

The utility model aims to provide a pre-buried tower crane foundation which does not occupy road surfaces on two sides of a ballast, has large hoisting radius and large bearing capacity and takes a foot pier as a support, and solves the problem that a tower crane for an ultra-wide box girder without a tower crane installation space beside an overhead can not be installed.

The technical problems are solved by the following technical scheme: the embedded tower crane foundation taking the foot pier as the support comprises a pier and a cast-in-situ box girder end beam, wherein a support is arranged at the center of the upper end face of the pier, the cast-in-situ box girder end beam is supported on the support, both longitudinal bridge sides of the cast-in-situ box girder end beam exceed the support, two pier part embedded pivot pairs distributed on both sides of the support along the longitudinal bridge direction are embedded on the upper end face of the pier, two pier part embedded pivot pairs of the same pier part embedded pivot pair are distributed along the transverse bridge direction, the upper end of the pier part embedded pivot protrudes out of the upper end face of the pier, the cast-in-situ box girder end cross beam is embedded with four cross beam part embedded supporting points and a rectangular steel frame embedded with four corners and supported at the upper ends of the four cross beam part embedded supporting points in a one-to-one correspondence manner, the rectangular steel frame comprises four positioning steel plates arranged at the four corners of the rectangular steel frame, the lower ends of the cross beam part embedded supporting points extend out of the lower surface of the cast-in-situ box girder end cross beam, the parts of the four pier part embedded supporting points extending out of the upper end face of the pier are detachably connected with the parts of the four cross beam part embedded supporting points extending out of the cast-in-situ box girder end cross beam in a one-to-one correspondence manner, the four positioning steel plates are used for supporting four supporting points at the bottom of the tower crane in a one-to-one correspondence manner, and the upper surfaces of the positioning steel plates are flush with the upper surface of the cast-in-situ box girder end cross beam.

Preferably, the pre-buried fulcrum of pier portion is including being located the upper connecting lug of pier up end top, the pre-buried fulcrum of crossbeam portion is equipped with the lower engaging lug that is located cast-in-place case girder end crossbeam lower surface below, the lower engaging lug is equipped with down and connects the ear pinhole, goes up the engaging lug and is equipped with and connects the ear pinhole, and the horizontal connecting pin wears to establish in connecting the ear pinhole down and the last engaging lug pinhole with the pier portion pre-buried fulcrum stretches out the part of pier up end and the pre-buried fulcrum of crossbeam portion stretches out the part of cast-in-place case girder end crossbeam and can dismantle the link together.

Preferably, the number of the upper connecting lugs is two, and the upper connecting lugs are positioned between the two lower connecting lugs.

Preferably, one end of the horizontal connecting pin is integrally formed with a fixed stop block, the other end of the horizontal connecting pin is in threaded connection with a movable stop block, the upper connecting lug and the lower connecting lug are positioned between the movable stop block and the fixed stop block, and the fixed stop block and the movable stop block are used for preventing the horizontal connecting pin from falling off. The connection is reliable.

Preferably, the pre-buried fulcrum of pier portion still includes pouring pier portion steel sheet on the pier up end, wears to establish four rags in four angles of pier portion steel sheet, puts along the horizontal I-steel that extends of bridge on pier portion steel sheet, puts the both ends one-to-one cover on two on the I-steel both ends and establishes the nut on rag bolt, nut pushes down the rag bolt makes the rag bolt press on the I-steel, wears to establish two rags on same rag bolt on the rag bolt and vertically distributes in the both sides of I-steel along the bridge, and rag bolt's lower extreme is pour in the pier, weld on the I-steel two steel connecting seats along the horizontal distribution of bridge, the engaging lug is steel construction down, has all welded on each steel connecting seat down the engaging lug, I-steel is including being the last horizontal wallboard, perpendicular connecting plate and the lower horizontal wallboard that "worker" font links together. The foundation bolt and the pier portion steel plate of the pier portion pre-buried fulcrum can be removed for reuse. Not only has good economy, but also can conveniently maintain the original appearance of the bridge.

Preferably, the length of the anchor bolt positioned in the pier is more than 60 cm.

Preferably, the lower ends of the anchor bolts are provided with elbows, and each two of the elbows of the anchor bolts are hooked on a reinforcing steel bar which extends along the horizontal direction and is poured in the pier. The connection reliability between the pre-buried pivot of the pier part and the pier can be realized.

Preferably, the foundation bolt is further sleeved with a steel base plate, and the steel base plate is located between the capping steel plate and the screw cap.

Preferably, the pre-buried fulcrum of the beam part further comprises two beam part steel plates poured in the beam at the end of the cast-in-situ box beam, the upper connecting lugs are of steel structures, the upper connecting lugs are welded on the beam part steel plates, and the rectangular steel frame is supported on the beam part steel plates. The structure is succinct, and the crossbeam is buried in advance in cast-in-place case roof beam end that can be convenient, and is reliable stable when supporting rectangular frame.

Preferably, the rectangular steel frame comprises four vertical steel beams distributed in a quadrilateral manner, four upper horizontal steel beams distributed in a shape of a Chinese character 'kou' and four lower horizontal steel beams distributed in a shape of a Chinese character 'kou', two ends of the upper horizontal steel beams are connected to the upper ends of the two vertical steel beams in a one-to-one correspondence manner, two ends of the lower horizontal steel beams are connected to the lower ends of the two vertical steel beams in a one-to-one correspondence manner, lower supporting steel plates are welded on the lower end faces of the vertical steel beams, four lower supporting steel plates are supported on four pre-buried supporting points of the beam parts in a one-to-one correspondence manner, four positioning steel plates are welded on the upper end faces of the four vertical steel beams in a one-to-one correspondence manner, the vertical steel beams connected to the same upper horizontal steel beam are connected together through one oblique steel beam, and the upper ends of the four vertical steel beams are connected to the four ends of the upper cross frame in a one-to-one correspondence manner. The structural strength is good.

The beneficial effects of the utility model are as follows: firstly, a tower crane foundation is arranged by utilizing pier columns and cross beams at the end of a cast-in-situ box girder to support a tower crane, so that the operation radius and the lifting weight requirements of lifting equipment for ultra-wide cast-in-situ girder construction can be met, the use efficiency of the tower crane is improved, and meanwhile, the construction safety is ensured; the utility model can remove the exposed part and bridge quickly, restore the design function of the box girder and pier column, and achieve the maximum turnover utilization of the components, thereby having good energy-saving and environment-friendly social benefits; does not occupy the surrounding land and has good environmental protection.

Drawings

FIG. 1 is a schematic view of a part of a structure of a first embodiment of the present utility model;

fig. 2 is an enlarged schematic view of a pier portion embedded fulcrum;

fig. 3 is a schematic view of a rectangular frame.

In the figure: pier 1, pier portion pre-buried fulcrum 2, pier portion steel sheet 3, rag bolt 4, I-steel 30, capping steel sheet 5, steel backing plate 6, nut 7, elbow 28, reinforcing steel bar 9, steel connecting seat 10, lower connecting lug 11, lower connecting lug pin hole 12, upper horizontal wallboard 13, vertical connecting plate 14, lower horizontal wallboard 15, crossbeam portion steel sheet 16, upper connecting lug 17, horizontal connecting pin 18, fixed dog 19, movable dog 20, vertical steel beam 29, upper horizontal steel beam 21, lower horizontal steel beam 22, lower supporting steel sheet 23, positioning steel sheet 24, oblique steel beam 25, upper cross 26, lower cross 27.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model; all other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 3, a pre-buried tower crane foundation supported by a footpier comprises a pier 1 (only the upper end surface of the pier 1 is shown so as to observe the components positioned in the pier of the utility model) and a cast-in-situ box girder end beam (not shown in the figure). A support (not shown) is arranged in the center of the upper end face of the pier, the beam at the end of the cast-in-situ box girder is supported on the support, and both sides of the longitudinal bridge of the beam at the end of the cast-in-situ box girder exceed the support.

The upper end face of the bridge pier is embedded with two bridge pier part embedded pivot pairs distributed on two sides of the support along the longitudinal bridge direction, and two bridge pier part embedded pivot 2 of the same bridge pier part embedded pivot pair are distributed along the transverse bridge direction (the transverse bridge direction is the width direction of the bridge deck), wherein the upper ends of the bridge pier part embedded pivot points protrude out of the upper end face of the bridge pier. Specifically: the pre-buried fulcrum of pier portion is including pouring pier portion steel sheet 3 on the pier up end, wears to establish four rag bolt 4 in four angles of pier portion steel sheet, put along the transverse I-steel 30 that extends of bridge on pier portion steel sheet, put two steel sheets 5 that press top that set up on two rag bolt with the both ends one-to-one on I-steel both ends, steel backing plate 6 and threaded connection's on rag bolt nut 7 of cover are established on rag bolt. The steel backing plate is positioned between the capping steel plate and the screw cap. The nut presses the jacking steel plate downwards through the steel base plate so that the jacking steel plate is pressed on the I-steel. Two anchor bolts penetrating through the same capping steel plate are distributed on two sides of the I-steel along the longitudinal direction of the bridge (the longitudinal direction of the bridge is the extending direction of the bridge), and the lower ends of the anchor bolts are poured into the bridge pier. The length of the anchor bolt positioned in the pier is more than 60 cm. The lower ends of the foundation bolts are provided with elbows 28, and the elbows of every two foundation bolts are hooked on a reinforcing steel bar 9 which extends along the horizontal direction and is poured in the pier. Two steel connecting seats 10 which are distributed transversely along the bridge are welded on the I-steel, two lower connecting lugs 11 which are distributed transversely along the bridge are arranged on one steel connecting seat, and lower connecting lugs are provided with lower connecting lug pin holes 12. The lower connecting lug is of a steel structure, and the steel connecting seat and the lower connecting lug are welded together. The I-steel comprises an upper horizontal wall plate 13, a vertical connecting plate 14 and a lower horizontal wall plate 15 which are connected together in an I shape.

Four pre-buried fulcra of the beam part are pre-buried in the beam at the end of the cast-in-situ box beam. The cross beam at the end of the cast-in-situ box beam is also embedded with four rectangular steel frames which are supported at the upper ends of the embedded fulcrums of the four cross beam parts in a one-to-one correspondence manner. The beam part pre-buried fulcrum comprises two beam part steel plates 16 poured in the beam at the beam end of the cast-in-situ box beam. The beam part steel plate is connected with an upper connecting lug 17. The upper connecting lug is of a steel structure, and the steel plate of the beam part and the upper connecting lug are welded together. The lower connecting lug is positioned below the lower surface of the beam at the end of the cast-in-situ box beam. The upper connecting lug is provided with an upper connecting lug pin hole. An upper connecting lug is positioned between two lower connecting lugs connected with the same steel connecting seat.

When the cast-in-situ box girder end cross beam is assembled on the bridge pier, two lower connecting lugs on one steel connecting seat and an upper connecting lug positioned between the two lower connecting lugs are connected together through a horizontal connecting pin 18, specifically, the horizontal connecting pin (the steel pin) is simultaneously penetrated in a pin hole of the lower connecting lug and a pin hole of the upper connecting lug, and the part of the embedded pivot of the bridge pier part extending out of the upper end face of the bridge pier and the part of the embedded pivot of the cross beam part extending out of the cast-in-situ box girder end cross beam are detachably connected together. One end integrated into one piece of horizontal connecting pin has fixed dog 19, and the other end threaded connection has movable dog 20, goes up the engaging lug and is located between movable dog and the fixed dog with lower engaging lug, and fixed dog and movable dog are used for preventing the horizontal connecting pin to drop. The horizontal connecting pin can be pulled out after the movable stop block is unscrewed.

The rectangular steel frame comprises four vertical steel beams 29 which are distributed in a quadrilateral manner, four upper horizontal steel beams 21 which are distributed in a square manner and four lower horizontal steel beams 22 which are distributed in a square manner, wherein two ends of the upper horizontal steel beams are welded at the upper ends of the two vertical steel beams in a one-to-one correspondence manner, two ends of the lower horizontal steel beams are welded at the lower ends of the two vertical steel beams in a one-to-one correspondence manner, lower supporting steel plates 23 are welded on the lower end faces of the vertical steel beams, the four lower supporting steel plates are supported on four beam part pre-buried fulcrums in a one-to-one correspondence manner (specifically, on two beam part steel plates which are supported on the beam part pre-buried fulcrums), and positioning steel plates 24 are welded at the upper ends of the vertical steel beams. The vertical steel beams connected to the same upper horizontal steel beam are welded at two ends of an inclined steel beam 25, the upper ends of the four vertical steel beams are welded on the four ends of the upper cross 26 in one-to-one correspondence, and the lower ends of the four vertical steel beams are welded on the four ends of the lower cross 27 in one-to-one correspondence. The upper surface of the positioning steel plate is flush with the upper surface of the beam at the end of the cast-in-situ box beam.

When the tower crane supporting device is used, the four positioning steel plates are correspondingly supported on four supporting points at the bottom of the tower crane one by one, so that the tower crane is supported.

After the bridge construction is completed, removing the tower crane, unscrewing the movable stop block, and pulling out the horizontal connecting pin. After the nut is unscrewed, the foundation bolt, the horizontal steel bar and the steel plate of the pier part, which are parts of the pre-buried fulcrum of the pier part, are taken down for turnover use. And cutting the parts of the upper connecting lugs and the foundation bolts for outputting the steel plates of the pier parts, and performing rust prevention treatment on the exposed parts of the pier parts, the pre-buried fulcra of which are remained on the pier, and the exposed parts of the cross beam parts, the pre-buried fulcra of which are remained on the cross beam of the cast-in-situ box beam end.

Claims (10)

1. The embedded tower crane foundation taking the foot piers as the support comprises piers and a cast-in-situ box girder end beam, wherein a support is arranged in the center of the upper end face of each pier, the cast-in-situ box girder end beam is supported on the support, two longitudinal bridge sides of the cast-in-situ box girder end beam exceed the support.

2. The embedded tower crane foundation supported by the foot piers according to claim 1, wherein the embedded pivot of the pier portion comprises an upper connecting lug located above the upper end face of the pier, the embedded pivot of the beam portion is provided with a lower connecting lug located below the lower surface of the beam at the end of the cast-in-situ box beam, the lower connecting lug is provided with a lower connecting lug pin hole, the upper connecting lug is provided with an upper connecting lug pin hole, and a horizontal connecting pin is arranged in the lower connecting lug pin hole and the upper connecting lug pin hole in a penetrating manner.

3. The pre-buried tower crane foundation supported by the footrests of claim 2, wherein the number of the upper connecting lugs is two, and the upper connecting lugs are positioned between the two lower connecting lugs.

4. A pre-buried tower crane foundation supported by a pier according to claim 2 or 3, wherein one end of the horizontal connecting pin is integrally formed with a fixed stop block, the other end is in threaded connection with a movable stop block, the upper connecting lug and the lower connecting lug are positioned between the movable stop block and the fixed stop block, and the fixed stop block and the movable stop block are used for preventing the horizontal connecting pin from falling off.

5. The embedded tower crane foundation supported by the foot piers according to claim 2 or 3, wherein the embedded pivot of the pier portion further comprises a pier portion steel plate poured on the upper end face of the pier, four anchor bolts penetrating through four corners of the pier portion steel plate, I-steel which is placed on the pier portion steel plate and extends transversely along the bridge, two capping steel plates placed on two ends of the I-steel in a one-to-one correspondence manner, and nuts which are connected to the anchor bolts in a threaded manner, the caps press the capping steel plate downwards so that the capping steel plate presses the I-steel, the two anchor bolts penetrating through the same capping steel plate are longitudinally distributed on two sides of the I-steel along the bridge, the lower ends of the anchor bolts are poured in the pier, two steel connecting seats which are transversely distributed along the bridge are welded on the I-steel, the lower connecting lugs are of a steel structure, and each steel connecting seat is welded with the lower connecting lugs, and the I-steel comprises an upper horizontal wall plate, a vertical wall plate and a lower horizontal wall plate which are connected together in an I-shape.

6. The pre-buried tower crane foundation supported by the footrests of claim 5, wherein the length of the foundation bolts positioned in the piers is more than 60 cm.

7. The embedded tower crane foundation supported by the footpiers according to claim 5, wherein the lower ends of the foundation bolts are provided with elbows, and each two elbows of the foundation bolts are hooked on a reinforcing steel bar which extends along the horizontal direction and is poured in the pier.

8. The pre-buried tower crane foundation supported by the foot piers according to claim 5, wherein the foundation bolts are further sleeved with steel base plates, and the steel base plates are located between the capping steel plates and the nuts.

9. A pre-buried tower crane foundation with a foot pier as a support according to claim 2 or 3, wherein the pre-buried fulcrum of the beam part further comprises two beam part steel plates poured in the beam at the end of the cast-in-situ box beam, the upper connecting lugs are of steel structure, the upper connecting lugs are welded on the beam part steel plates, and the rectangular steel frame is supported on the beam part steel plates.

10. The embedded tower crane foundation supported by foot piers according to claim 1, 2 or 3, wherein the rectangular steel frame comprises four vertical steel beams distributed in a quadrilateral manner, four upper horizontal steel beams distributed in a shape of a Chinese character 'kou' and four lower horizontal steel beams distributed in a shape of a Chinese character 'kou', two ends of the upper horizontal steel beams are connected to the upper ends of the two vertical steel beams in a one-to-one correspondence manner, two ends of the lower horizontal steel beams are connected to the lower ends of the two vertical steel beams in a one-to-one correspondence manner, lower supporting steel plates are welded on the lower end faces of the vertical steel beams, four lower supporting steel plates are supported on the embedded fulcra of the four cross beam parts in a one-to-one correspondence manner, four positioning steel plates are welded on the upper end faces of the four vertical steel beams in a one-to-one correspondence manner, the vertical steel beams connected to the same upper horizontal steel beam are connected to each other through one oblique steel beam, and the upper ends of the four vertical steel beams are connected to the four ends of the upper end heads of the upper cross frame in a one-to the lower end of the lower cross frame in a one-to one correspondence manner.