CN211442685U - Splicing platform on water - Google Patents
Splicing platform on water Download PDFInfo
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- CN211442685U CN211442685U CN202020007434.5U CN202020007434U CN211442685U CN 211442685 U CN211442685 U CN 211442685U CN 202020007434 U CN202020007434 U CN 202020007434U CN 211442685 U CN211442685 U CN 211442685U
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Abstract
The utility model provides an overwater splicing platform, which consists of 2N barges, wherein N is more than or equal to 1; the 2N barges are averagely divided into two groups, and each group of barges are in flexible connection by adopting cables; a steel platform is arranged between the two groups of barges, and water flow is arranged below the steel platform; the two groups of barges are respectively provided with partial arc sections of cofferdams, the two partial arc sections on the two groups of barges are symmetrical, the steel platform is used as a channel for communicating the two groups of barges, the two groups of barges are connected into a whole, the remaining arc sections of the cofferdams are hoisted and spliced in a cantilever state, and the two partial arc sections and the remaining arc sections are spliced into a ring shape. The utility model discloses after splicing the steel cofferdam on splicing platform on water, utilize 500t jack-up ship integral hoisting steel cofferdam to descend water, the steel cofferdam gesture is steady, and factor of safety is guaranteed. Furthermore, the utility model discloses still save material, reduce operation personnel quantity.
Description
Technical Field
The utility model relates to a double-walled steel cofferdam launching construction field especially relates to a concatenation platform on water.
Background
With the rapid development of bridge engineering, the construction of deepwater foundation bridges such as river-crossing bridges, sea-crossing bridges and the like is increased year by year. Under the deep water bare rock geological condition, the foundation is generally constructed by a 'weir-first pile-later' method of a double-wall steel cofferdam, and the steel cofferdam is used as a water retaining structure and also used as a pile foundation steel casing lowering guide structure and a construction drilling platform bearing structure.
The double-wall steel cofferdam is a common mode for bridge deepwater foundation construction and is also a serious difficulty for underwater foundation construction. The large double-wall steel cofferdam has large volume and mass, so the launching operation difficulty is higher. The traditional double-wall steel cofferdam is constructed by using an air bag method, has the characteristics of simplicity, convenience, practicability, economy and the like, and well solves the problem of launching the large steel cofferdam.
However, the application of the air bag launching technology has strict requirements on objective conditions, wherein the requirements on construction sites, river water depth, river area and equipment performance are high. If the slope of the peripheral bank step is steep, the construction under water by the air bag method is not suitable. Therefore, a new cofferdam launching device is urgently needed to be researched.
SUMMERY OF THE UTILITY MODEL
The utility model provides a splicing platform on water utilizes the barge to set up cofferdam and assembles superficial platform on water, adopts the assembly mode of suspension on water again to accomplish assembling of cofferdam after the cofferdam launching is taken one's place.
In order to solve the technical problem, the utility model adopts the following technical scheme:
an overwater splicing platform consists of 2N barges, wherein N is more than or equal to 1;
the 2N barges are averagely divided into two groups, and each group of barges are in flexible connection by adopting cables;
a steel platform is arranged between the two groups of barges, and water flow is arranged below the steel platform;
and partial arc sections of the cofferdams are respectively installed on the two groups of barges, the two partial arc sections on the two groups of barges are symmetrical, the remaining arc sections of the cofferdams are hoisted and spliced in a cantilever state, and the two partial arc sections and the remaining arc sections are spliced into a ring shape.
As a further improvement of the utility model, the two groups of barges are symmetrical along the water flow direction.
As a further improvement of the utility model, the number of the steel platforms is two, the two steel platforms are erected at the two ends of the barge, and the installation of partial arc sections is completed in the middle of the barge;
the remaining arc segment is divided into two symmetrical arcs which are positioned at two ends of the two partial arc segments;
hoisting a section of arc, and completing splicing the section of arc and one end of two partial arc sections; and hoisting the other arc section to complete the splicing of the other arc section and the other end of the two partial arc sections.
As the utility model discloses a further improvement, all install hoisting equipment on every group barge, all arc sections in two sets of hoisting equipment hoist and mount cofferdam nearby.
As a further improvement of the utility model, N is 2, each group of barges consists of a crane ship and a support ship, and the crane ship and the support ship are flexibly connected through a cable;
a gap is formed between the support cushion ships in the two barge groups, and the steel platform is erected above the gap;
the crane ships in the two barge groups are respectively positioned at the sides of the support ship;
and the installation of partial arc sections of the cofferdam is completed on the support ship, and the hoisting equipment is arranged on the hoisting ship.
As a further improvement of the utility model, the head end and the tail end of the crane ship are fixed by anchoring;
the crane ship is provided with an anchor chain, an anchor connected with the anchor chain is thrown into water to land, the anchor is meshed into soil, the holding power generated by the anchor is consolidated with the water bottom, and the crane ship is tied at a preset position.
As a further improvement of the utility model, the head end and the tail end of the crane ship are anchored and fixed by two anchor blocks respectively;
the two anchor blocks are respectively connected with the crane ship through an anchor chain.
As a further improvement of the utility model, the length directions of the two groups of barges are along the water flow direction;
at the upstream and the downstream of a crane ship in a group of barges, two anchor chains connected with two anchor blocks at the head end and two anchor chains connected with two anchor blocks at the tail end are connected with the crane ship in the group in a crossed manner;
two anchor chains connected with the two anchor blocks at the head end are connected with the crane ship of the group in a cross shape at the upstream of the crane ship in the other group of barge;
downstream of the crane vessel in the other barge group, two anchor chains connected with the two anchor blocks at the tail end are connected with the crane vessel in the current barge group in a splayed shape.
As a further improvement of the utility model, two groups of barges are all anchored on the water surface by anchoring.
As a further improvement of the utility model, a set of barges close to the bank side still erect a bridge with the bank side between the ground.
The utility model has the advantages that:
1. when adopting the gasbag to launch, major diameter steel cofferdam is gone into water back moment of gravity is greater than moment of buoyancy, and the river water easily flows back the lobe from the cofferdam suitable for reading, leads to the cofferdam to be difficult to from floating balance, and the safe risk is high, assembles gasbag launching scheme with conventional shipyard and compares, the utility model discloses after splicing the steel cofferdam on water on splicing platform, utilize 500t jack-up ship integral hoisting steel cofferdam launching, steel cofferdam gesture is steady, and factor of safety is guaranteed.
2. The utility model discloses a splicing platform on water simple structure, concatenation convenience compare with the gasbag launching scheme of assembling of conventional shipyard, the utility model discloses save material, reduce operation personnel quantity.
3. The utility model discloses a bridge is in order to realize ground to the intercommunication of a set of barge near the bank side, through the steel platform intercommunication between two sets of barges, the operator comes another set of barge from bank side ground according to the preface through the bridge, after being close to a set of barge, the steel platform of bank side.
Drawings
FIG. 1 is a schematic structural view of an above-water splicing platform;
fig. 2 is a schematic diagram of the arrangement of anchor chains and anchor blocks in the water splicing platform.
In the figure, 100, a first set of barges; 110. a first lift vessel; 120. a first support boat; 200. a second set of barges; 210. a second crane vessel; 220. a second support pad ship; 300. a steel platform; 400. a first partial arc segment; 500. a second partial arc segment; 600. a bridge; 700. and (4) an anchor chain.
Detailed Description
On one hand, the application of the air bag launching technology has strict requirements on objective conditions, wherein the requirements on construction sites, river water depth, river area and equipment performance are high. If the slope of the peripheral bank step is steep, the construction under water by the air bag method is not suitable. On the other hand, the launching gradient of the steel cofferdam manufacturing shipyard is larger, when the air bag launching is adopted, the gravity moment of the large-diameter steel cofferdam after entering water is larger than the floating moment, and river water easily flows back to the bulkhead from the upper opening of the cofferdam, so that the cofferdam is difficult to realize self-floating balance, and the safety risk is extremely high. Based on this, the utility model provides a concatenation platform on water accomplishes the concatenation of first festival steel cofferdam on the concatenation platform on water earlier, then installs the second festival steel cofferdam under the hoist and mount of the first festival steel cofferdam that the concatenation is good, takes one's place cofferdam foundation ditch to the steel cofferdam floatingly transport that the concatenation is good afterwards, accomplishes other festival steel cofferdam constructions at last.
The utility model relates to an overwater splicing platform, which consists of 2N barges, wherein N is more than or equal to 1; 2N barges are averagely divided into two groups, and each group of barges are in flexible connection by adopting cables; a steel platform 300 is erected between the two groups of barges, and water flow is arranged below the steel platform 300; the installation of partial arc sections of cofferdams is respectively completed on the two groups of barges, the two partial arc sections on the two groups of barges are symmetrical, the steel platform 300 is used as a channel for communicating the two groups of barges and connecting the two groups of barges into a whole, the remaining arc sections of the cofferdams are hoisted and spliced in a cantilever state, and the two partial arc sections and the remaining arc sections are spliced into a ring shape.
The utility model discloses after splicing the steel cofferdam on splicing platform on water, utilize 500t jack-up ship integral hoisting steel cofferdam to descend water, the steel cofferdam gesture is steady, and factor of safety is guaranteed.
The utility model discloses a splicing platform on water simple structure, concatenation convenience compare with the gasbag launching scheme of assembling of conventional shipyard, the utility model discloses save material, reduce operation personnel quantity.
The first implementation mode comprises the following steps:
the embodiment provides an overwater splicing platform which comprises 2N barges, wherein N is more than or equal to 1; 2N barges are averagely divided into two groups, and each group of barges are in flexible connection by adopting cables; a steel platform 300 is erected between the two groups of barges, and water flow is arranged below the steel platform 300; the two groups of barges are respectively provided with partial arc sections of cofferdams, the two partial arc sections on the two groups of barges are symmetrical, the steel platform is used as a channel for communicating the two groups of barges, the two groups of barges are connected into a whole, the remaining arc sections of the cofferdams are hoisted and spliced in a cantilever state, and the two partial arc sections and the remaining arc sections are spliced into a ring shape.
Preferably the two sets of barges are symmetrical in the direction of water flow. The symmetrical arrangement is to facilitate splicing of the steel cofferdams. It should be noted that the reason why the water flow is symmetrically arranged in the present embodiment is that the water-facing surface of the water platform barge is small, the water flow force is small, and the water flow direction and the barge power direction are on the same line, which facilitates the position adjustment.
Preferably, two steel platforms 300 are arranged, the two steel platforms 300 are erected at two ends of the barge, and a part of arc sections are installed in the middle of the barge; the remaining arc segment is divided into two symmetrical arcs which are positioned at two ends of the two partial arc segments; during actual construction, a section of arc is hoisted first, and the splicing of the section of arc and one end of each of the two partial arc sections is completed; and hoisting the other arc section to complete the splicing of the other arc section and the other end of the two partial arc sections.
In the embodiment, each group of barge is provided with hoisting equipment, and the two groups of hoisting equipment hoist all arc sections of the cofferdam nearby. When the cofferdam blocks are transported to the assembly site, the minimum assembly units are all, and after the assembly of the overwater platform is completed, the first section of cofferdam is assembled nearby by utilizing hoisting equipment. Usually, two partial arc sections on the barge are assembled firstly, and then the rest arc sections are assembled by the cantilever.
In this embodiment, both sets of barges are moored to the surface by mooring.
A bridge 600 is erected between a set of barges close to the shore side and the shore side ground. The bridge 600 of the present embodiment is designed to communicate between the ground and one set of barges near the shore side, and the two sets of barges communicate with each other through the steel platform 300, and an operator moves from the shore side ground to the other set of barges after passing through the bridge 600, the one set of barges near the shore side, and the steel platform 300 in this order.
As shown in fig. 1, the marine splicing platform is composed of a first set of barges 100 and a second set of barges 200, the first set of barges 100 being composed of a first crane ship 110 and a first skid ship 120, and the second set of barges 200 being composed of a second crane ship 210 and a second skid ship 220. All the blocks of the cofferdam are stacked on a support ship and a crane ship, and the assembly (including anchoring) of the platform on the water is completed first and then the assembly of the first section of cofferdam is started. Firstly, the first crane ship 110 reaches a designated position and is thrown to a position with an anchor ingot for positioning; then, the second crane ship 210 reaches a designated position and is thrown from the anchor positioning device; then, the first support ship 120 is conveyed to the platform splicing area and is flexibly connected with the first crane ship 110 by using a cable; then the second support ship 220 arrives at the platform splicing area and is in flexible connection with the second crane ship 210 by adopting a cable; finally, two steel platforms 300 are erected between the first 120 and second 220 buttresses. The first crane ship 110 and the second crane ship 210 are anchored at the head end and the tail end by anchoring, the first crane ship 110 and the second crane ship 210 are provided with anchor chains 700, the anchors connected with the anchor chains 700 are thrown into water to land on the ground, the anchors are meshed into the soil, the holding power generated by the anchors is consolidated with the water bottom, and the first crane ship 110 and the second crane ship 210 are left at preset positions.
The second embodiment:
on the basis of the scheme disclosed by the embodiment, each group of barges consists of a crane ship and a support ship, wherein the crane ship is in flexible connection with the support ship through a cable; a gap is formed between the support ships in the two barge groups, and the steel platform 300 is erected above the gap; the crane ships in the two barge groups are respectively positioned at the sides of the support ship; and the installation of partial arc sections of the cofferdam is completed on the support ship, and the hoisting ship is provided with hoisting equipment.
As shown in fig. 2, the head end and the tail end of the crane ship are fixed by anchoring; the hoist ship has an anchor chain 700, and an anchor connected to the anchor chain 700 is thrown into the water to land and is engaged into the ground, and a holding force generated by the anchor is consolidated with the water bottom to moor the hoist ship at a predetermined position.
Preferably, the head end and the tail end of the crane ship are anchored and fixed by two anchor blocks respectively; the two anchor blocks are each connected to the crane vessel by a chain 700. Specifically, the length directions of the two sets of barges are along the water flow direction; upstream and downstream of the crane ship in a barge group, two anchor chains 700 connected to the first two anchor blocks and two anchor chains 700 connected to the second two anchor blocks are connected to the crane ship in the barge group in a crossing shape. Two anchor chains 700 connected with the two anchor blocks at the head end are connected with the crane ship of the group in a cross shape at the upstream of the crane ship in the other group of barge; downstream of the crane vessel in the other barge group, two anchor chains 700 connected to the two anchor blocks at the tail end are connected to the crane vessel of the current barge group in a splayed configuration.
In another barge, two anchor chains 700 connected with two anchor blocks at the tail end are connected with the crane ship of the barge in a splayed manner, and the reason that the anchor chains 700 are arranged in a splayed manner with the anchor blocks is as follows: the process of the above-water splicing platform determines that the first support paddleship 120 and the second support paddleship 220 need to be driven in subsequently, when the first support paddleship 120 and the second support paddleship 220 are driven in, the anchor chains 700 and the anchor blocks are arranged in a splayed mode, the anchor chains 700 on the right side of the splayed mode can be loosened temporarily, and the remaining three anchor chains 700 and the anchor blocks in the second crane ship 210 are used for positioning the second crane ship through three points. If the head end and the tail end of the second hoisting ship adopt the cross anchor at the same time, two anchor chains at the tail end are loosened, two points are left for positioning the second hoisting ship at the moment, the working condition is more unfavorable, and the safety risk is high.
Claims (9)
1. An overwater splicing platform is characterized by consisting of 2N barges, wherein N is more than or equal to 1;
the 2N barges are averagely divided into two groups, and each group of barges are in flexible connection by adopting cables;
a steel platform is arranged between the two groups of barges, and water flow is arranged below the steel platform;
the two groups of barges are respectively provided with partial arc sections of cofferdams, the two partial arc sections on the two groups of barges are symmetrical, the steel platform is used as a channel for communicating the two groups of barges, the two groups of barges are connected into a whole, the remaining arc sections of the cofferdams are hoisted and spliced in a cantilever state, and the two partial arc sections and the remaining arc sections are spliced into a ring shape.
2. The above splicing platform of claim 1, wherein the two sets of barges are symmetrical in the direction of water flow.
3. The splicing platform on water as claimed in claim 1, wherein the number of the steel platforms is two, the two steel platforms are erected at two ends of the barge, and part of the arc sections are installed in the middle of the barge;
the remaining arc segment is divided into two symmetrical arcs which are positioned at two ends of the two partial arc segments;
firstly hoisting a section of arc to complete the splicing of the section of arc and one end of two partial arc sections; and hoisting the other arc to complete the splicing of the other arc and the other ends of the two partial arc sections.
4. The above-water splicing platform according to claim 1 or 3, wherein each group of the barge is provided with hoisting equipment, and the two groups of the hoisting equipment hoist all arc sections of the cofferdam nearby.
5. The offshore splicing platform of any one of claims 1-3, wherein N is 2, each set of barges is composed of a crane ship and a support ship, and the crane ship and the support ship are flexibly connected through cables;
a gap is formed between the support cushion ships in the two barge groups, and the steel platform is erected above the gap;
the crane ships in the two barge groups are respectively positioned at the sides of the support ship;
and the installation of partial arc sections of the cofferdam is completed on the support ship, and the hoisting equipment is arranged on the hoisting ship.
6. The aquatic splicing platform of claim 5, wherein the head end and the tail end of the crane vessel are each secured by mooring;
the crane ship is provided with an anchor chain, an anchor connected with the anchor chain is thrown into water to land, the anchor is meshed into soil, the holding power generated by the anchor is consolidated with the water bottom, and the crane ship is tied at a preset position.
7. The splicing platform of claim 6, wherein the length of both sets of barges is along the direction of water flow;
at the upstream and the downstream of a crane ship in a group of barges, two anchor chains connected with two anchor blocks at the head end and two anchor chains connected with two anchor blocks at the tail end are connected with the crane ship in the group in a crossed manner;
two anchor chains connected with the two anchor blocks at the head end are connected with the crane ship of the group in a cross shape at the upstream of the crane ship in the other group of barge;
downstream of the crane vessel in the other barge group, two anchor chains connected with the two anchor blocks at the tail end are connected with the crane vessel in the current barge group in a splayed shape.
8. The offshore splicing platform of claim 1, wherein both sets of barges are moored to the water surface by mooring.
9. The water splicing platform of claim 1, wherein the set of barges adjacent the shore side further span a bridge with the shore side ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020007434.5U CN211442685U (en) | 2020-01-02 | 2020-01-02 | Splicing platform on water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020007434.5U CN211442685U (en) | 2020-01-02 | 2020-01-02 | Splicing platform on water |
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| CN211442685U true CN211442685U (en) | 2020-09-08 |
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| CN202020007434.5U Active CN211442685U (en) | 2020-01-02 | 2020-01-02 | Splicing platform on water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112937781A (en) * | 2021-03-22 | 2021-06-11 | 中国船舶科学研究中心 | Quick-assembly motor-driven floating barge and assembly method |
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2020
- 2020-01-02 CN CN202020007434.5U patent/CN211442685U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112937781A (en) * | 2021-03-22 | 2021-06-11 | 中国船舶科学研究中心 | Quick-assembly motor-driven floating barge and assembly method |
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Effective date of registration: 20210810 Address after: 200032 No. 139, Xuhui District, Shanghai, Pingjiang Road Patentee after: CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Patentee after: NO.2 ENGINEERING CO., LTD. OF CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Patentee after: SHANGHAI BRANCH, CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Address before: 200032 No. 139, Xuhui District, Shanghai, Pingjiang Road Patentee before: CCCC THIRD HARBOR ENGINEERING Co.,Ltd. Patentee before: SHANGHAI BRANCH, CCCC THIRD HARBOR ENGINEERING Co.,Ltd. |