CN114396066A - Reverse-pulling type bottom plate system with bottom sleeve box and construction method thereof - Google Patents

Abstract

The invention provides a reverse-pulling type bottom plate system of a jacket box with a bottom and a construction method thereof, wherein the reverse-pulling type bottom plate system comprises a bracket system and a bottom plate system, the bracket system comprises an inclined support, a horizontal bracket and a bearing beam, the inclined support is obliquely arranged on a steel casing, the horizontal bracket is horizontally arranged, one end of the horizontal bracket is connected with the steel casing, the other end of the horizontal bracket is fixed above the inclined support, and the bearing beam is arranged between the two horizontal brackets; the bottom plate system includes distribution beam, bottom plate, anti-draw bar spare, the distribution beam is located horizontal bracket, the bottom plate is located the distribution beam, anti-draw bar spare passes bottom plate, horizontal bracket. According to the invention, the bottom plate of the bottom-capped jacket box is connected with the steel casing through the bracket system and the bottom plate system, the steel casing is used as a support for the bottom plate of the bottom-capped jacket box, so that the pouring of bottom-capped concrete is reduced, meanwhile, only the underwater counter-pull rod piece is required to be installed, the procedures such as underwater welding and the like are not required to be repeated, the operation is convenient, the safety is ensured, and the construction time and the cost are saved.

Description

Reverse-pulling type bottom plate system with bottom sleeve box and construction method thereof

Technical Field

The invention belongs to the technical field of installation of a jacket box with a bottom, and particularly relates to a reverse-pulling type bottom plate system of the jacket box with the bottom and a construction method thereof.

Background

In the underwater construction process of the jacket box with the bottom, the counter weight of the jacket box with the bottom is increased by adopting the bottom sealing concrete for resisting the buoyancy; meanwhile, in the lowering process, the position of the bottom sleeve box needs to be fixed by members such as a winch, a jack and finish rolled deformed steel bars, the number of construction processes is large, the construction period is long, the bottom sealing effect is poor, and the water seepage situation often occurs.

Disclosure of Invention

The invention provides a reverse-pull type bottom plate system of a jacket box with a bottom and a construction method thereof, underwater concrete bottom sealing is not needed, only a bracket and a support system need to be installed in advance in the construction process, and the jacket box with the bottom is fixed to a pile casing through a reverse pull rod.

In order to achieve the purpose, the invention provides the following technical scheme: a reverse pull type bottom plate system with a bottom jacketed box comprises a bracket system and a bottom plate system;

the bracket system comprises an inclined support, a horizontal bracket and a bearing beam, wherein the inclined support is obliquely arranged on the steel casing, the horizontal bracket is horizontally arranged, one end of the horizontal bracket is fixedly connected with the steel casing, the other end of the horizontal bracket is fixed above the inclined support, the bearing beam is arranged between the two horizontal brackets, is positioned above the two inclined supports, and forms a whole with the inclined support and the horizontal bracket to bear vertical force together;

the bottom plate system includes distribution beam, bottom plate, anti-draw bar, the distribution beam is located the level bracket, the bottom plate is located the distribution beam, anti-draw bar passes bottom plate, level bracket, is connected the bracket system with the bottom plate system and forms wholly.

Preferably, the bearing diagonal sets up three groups in the same direction as the bridge, and every group angle is unanimous, and the bottom all with protect a section of thick bamboo welded connection.

Preferably, the distribution beam is arranged above the horizontal corbels along the bridge direction, and three groups of horizontal corbels along the bridge direction are connected into a whole.

Preferably, one end of the horizontal bracket is welded with the steel casing, and the other end of the horizontal bracket is welded with the inclined support.

Preferably, the bracing top is equipped with the backup pad, horizontal bracket passes through the backup pad with the bracing and is connected fixedly, the size of backup pad is greater than the bracing section size.

Preferably, the bearing beam is installed underwater, and the contact seam with the horizontal bracket is located at the center line of the supporting plate.

Preferably, the bearing beam is fixedly connected with the inclined support through a bolt.

Preferably, an exposed waterproof plate is arranged at the joint of the steel casing and the bottom plate and used for preventing water.

Preferably, the waterproof plate is of a circular arc structure adaptive to the steel casing structure.

Preferably, the counter-pull rod piece comprises a vertically arranged finish-rolled threaded steel bar, a counter-pull plate and a bolt, the counter-pull plate is arranged above the bottom plate and below the horizontal bracket respectively, and the finish-rolled threaded steel bar penetrates through the bottom plate, the horizontal bracket and the counter-pull plate and is fixed through the bolt.

In another aspect, the present invention provides a construction method of a reverse-pulling type bottom plate system of a jacketed box with a bottom, comprising the steps of:

1) positioning and fixing an inclined support and a horizontal bracket at the outer side of the steel casing according to a designed elevation in advance, wherein the contact part of the inclined support and the horizontal bracket is connected by adopting a support plate;

2) sequentially lowering the steel casing and measuring the elevation of the steel casing to enable adjacent horizontal corbels to be at the same elevation;

3) after the pile foundation construction is finished, an underwater diver installs a bearing beam, the bearing beam is installed between two horizontal brackets, and the bearing beam is connected with a support plate above the inclined support through a bolt;

4) after the installation of the bearing beam is finished, the distribution beam and the bottom plate are integrally lowered, and the underwater diver installs a reverse pull rod piece;

5) after the reverse pull rod piece is installed, other parts with bottom sleeve boxes, such as a lateral template and the like, are installed.

Further, in order to ensure good water-tight performance of the bottom plate, underwater divers need to block or weld the gap between the bottom plate and the steel casing in the process, so that good water-tight performance is ensured.

Further, still include and protect a section of thick bamboo and bottom plate junction at the steel and set up the waterproof board, improve waterproof performance.

The invention has the advantages that: the invention mainly provides a support system capable of resisting water buoyancy without bottom sealing concrete, wherein a steel casing is provided with an inclined support, a horizontal bracket and other members in advance to be used for reversely pulling and supporting a subsequent jacket box with a bottom, the position of a steel casing pre-welded member can be determined in advance according to the elevation of a river bed, when the jacket box with the bottom is constructed, the jacket box with the bottom and the steel casing are integrally formed by installing the reverse pulling system underwater, the buoyancy is resisted by using the weight of the steel casing and the concrete bonding force, and meanwhile, in order to ensure the underwater sealing property, a waterproof plate is welded on the outer side of the steel casing in advance to be lapped with a bottom plate, so that the water sealing effect is improved.

The invention can reduce the underwater bottom sealing process when the underwater jacket box with the bottom is constructed, reduce the construction cost and has more convenient operation.

Drawings

FIG. 1 is a schematic side view of a bottom-capped crate reverse-pulling floor system of the present invention from a forward bridge direction;

FIG. 2 is a schematic top view of a reverse-pulling floor system for a jacketed bin of the present invention;

FIG. 3 is an enlarged, fragmentary view of the reversing lever of FIG. 1;

wherein: 1. the steel protects a section of thick bamboo, 2, bearing diagonal, 3, horizontal bracket, 4, spandrel girder, 5, reverse pull rod spare, 6, distributive girder, 7, bottom plate, 8, waterproof board, 9, backup pad, 10, reverse pull plate, 11, finish rolling twisted steel, 12, nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the specific embodiment of the invention, please refer to fig. 1-3, a reverse-pulling bottom plate system of a jacket box with a bottom comprises a bracket system and a bottom plate system, wherein the bracket system comprises an inclined support 2, a horizontal bracket 3 and a bearing beam 4, the inclined support 2 is welded on a steel casing 1, one end of the horizontal bracket 3 is welded on the steel casing 1, the other end of the horizontal bracket 3 is welded on the inclined support 2, the bearing beam 4 is positioned between the two horizontal brackets 3 and on the two inclined supports 2, and the bearing beam, the inclined support 2 and the horizontal bracket 3 form a whole body to bear vertical force together; the bottom plate system comprises distribution beam 6, bottom plate 7, anti-member of being drawn 5, distribution beam 6 is located horizontal bracket 3, steel sheet 7 is located distribution beam 6, anti-member of being drawn 5 passes bottom plate 7, horizontal bracket 3, is connected the bracket system and is formed wholly with the bottom plate system.

In order to improve stability, 2 bearing diagonal sets up three groups in the same direction as the bridge, and every group angle is unanimous, and the bottom all protects a 1 welding with the steel, distribution beam 6 is in the same direction as the bridge and is set up in the top of horizontal bracket 3, connects three horizontal brackets 3 of group as a whole.

Further, this embodiment, 3 one ends of horizontal bracket and steel protect 1 welding, one end and the welding of bearing diagonal 2, pass through backup pad 9 welding when welding with bearing diagonal 2, backup pad 9 size is greater than 2 section sizes of bearing diagonal.

Further, in this embodiment, the spandrel girder 4 is installed under water, and the contact seam with the horizontal corbel 3 is located at the central line position of the support steel plate 9 above the inclined support 2.

Further, this embodiment, horizontal bracket 3 adopts the anti-member of the drag link 5 of installation under water with the bottom plate system to be connected, anti-member of drag link 5 includes the finish rolling twisted steel 11, the nut 12 at anti-stay plate 10 both ends of anti-stay plate 10, vertical setting, anti-stay plate 10 sets up respectively in the top of bottom plate 7, the below of horizontal bracket 3, finish rolling twisted steel 11 passes bottom plate 7, horizontal bracket 3, anti-stay plate 10 is fixed through nut 12.

Further, the bearing beam 4 and the inclined support 2 are fixedly connected through an underwater mounting bolt.

Further, the steel plate 7 and the steel casing 1 are connected, and an arc-structure waterproof plate 8 which is exposed for 20cm is welded before the steel casing 1 is lifted up, so that the waterproof effect is improved.

The construction method of the embodiment comprises the following specific steps:

1) positioning and welding an inclined support 2 and a horizontal bracket 3 at the outer side of the steel casing 1 according to a designed elevation in advance; wherein the contact part of the inclined support 2 and the horizontal bracket 3 is connected by a support plate 9;

2) sequentially lowering the steel casing 1 after welding is finished and measuring the elevation of the steel casing 1 to enable adjacent horizontal corbels 3 to be at the same elevation;

3) after the pile foundation construction is finished, an underwater diver installs a bearing beam 4 and a bolt, wherein the bearing beam 4 is installed between two horizontal brackets 3;

4) after the bearing beam 4 is installed, the distribution beam 6 and the bottom plate 7 are integrally lowered, and the underwater diver installs a reverse pull rod piece 5;

5) after the reverse pull rod piece 5 is installed, other parts with bottom sleeve boxes such as a lateral template and the like are installed;

further, in order to ensure that the bottom plate 7 has good water-sealing performance, an underwater diver needs to block or weld a gap between the bottom plate 7 and the steel casing 1 in the process to ensure that the water-sealing performance is good, and specifically, an exposed arc-shaped waterproof plate 8 which is matched with the structure of the steel casing 1 can be welded at the joint of the steel casing 1 and the bottom plate 7.

The invention can reduce the underwater bottom sealing process when the underwater jacket box with the bottom is constructed, reduce the construction cost and has more convenient operation.

While the preferred embodiments of the invention have been described, it is to be understood that the invention is not limited to the precise embodiments described, and that equipment and structures not described in detail are understood to be practiced as commonly known in the art; any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention by those skilled in the art can be made without departing from the technical scope of the present invention, and still fall within the protection scope of the technical solution of the present invention.

Claims (10)

1. A reverse pull type bottom plate system of a jacket box with a bottom is characterized by comprising a bracket system and a bottom plate system;

the bracket system comprises an inclined support, a horizontal bracket and a bearing beam, wherein the inclined support is obliquely arranged on the steel casing, the horizontal bracket is horizontally arranged, one end of the horizontal bracket is fixedly connected with the steel casing, the other end of the horizontal bracket is fixed above the inclined support, the bearing beam is arranged between the two horizontal brackets, is positioned above the two inclined supports, and forms a whole with the inclined support and the horizontal bracket to bear vertical force together;

the bottom plate system includes distribution beam, bottom plate, anti-draw bar, the distribution beam is located the level bracket, the bottom plate is located the distribution beam, anti-draw bar passes bottom plate, level bracket, is connected the bracket system with the bottom plate system and forms wholly.

2. A bottom-capped crate reverse-pulling floor system as claimed in claim 1, wherein said diagonal braces are arranged in three groups along the direction of the bridge, each group has the same angle, and the bottom ends are welded to the casing.

3. A bottom-capped back-pull floor system as claimed in claim 1, wherein said distribution beams are disposed over the horizontal corbels in the bridge-wise direction to connect the horizontal corbels in the bridge-wise direction as a unit.

4. A bottom-capped suitcase reverse-pulling type bottom plate system as claimed in claim 1, wherein said diagonal braces are provided with support plates at the top, said horizontal brackets and diagonal braces are connected and fixed by the support plates, and the size of said support plates is larger than the size of the cross section of the diagonal braces.

5. A bottom-capped back-pull floor system as claimed in claim 4, wherein said beam-to-horizontal bracket contact seam is located at the centerline of the support plate.

6. A bottom-capped box counter-pulling floor system as set forth in claim 5, wherein said load-bearing beams are fixedly connected to the diagonal braces by bolts.

7. A bottom-capped suitcase reverse-pulling type floor system as claimed in claim 1, wherein the joint of said steel casing and said floor is provided with an exposed waterproof plate for waterproofing.

8. A jacketed counter-pulling floor system as defined in claim 1, wherein the flashing is of a circular arc configuration adapted to the steel casing structure.

9. The reverse pulling type bottom plate system of the jacketed box with the bottom according to claim 1, wherein the reverse pulling rod member comprises a finish-rolled threaded steel bar, a reverse pulling plate and a bolt which are vertically arranged, the reverse pulling plate is respectively arranged above the bottom plate and below the horizontal bracket, and the finish-rolled threaded steel bar passes through the bottom plate, the horizontal bracket and the reverse pulling plate and is fixed through the bolt.

10. A method of constructing a reverse-pulling floor system with a bottom-capped box according to any one of claims 1 to 9, comprising the steps of:

1) positioning and fixing an inclined support and a horizontal bracket at the outer side of the steel casing according to a designed elevation in advance, wherein the contact part of the inclined support and the horizontal bracket is connected by adopting a support plate;

2) sequentially lowering the steel casing and measuring the elevation of the steel casing to enable adjacent horizontal corbels to be at the same elevation;

3) after the pile foundation construction is finished, an underwater diver installs a bearing beam, the bearing beam is installed between two horizontal brackets, and the bearing beam is connected with a support plate above the inclined support through a bolt;

4) after the installation of the bearing beam is finished, the distribution beam and the bottom plate are integrally lowered, and the underwater diver installs a reverse pull rod piece;

5) after the reverse pull rod piece is installed, other parts with bottom sleeve boxes, such as a lateral template and the like, are installed.

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