CN220927778U - Large-diameter pile foundation operation platform for deep water karst geology - Google Patents
Large-diameter pile foundation operation platform for deep water karst geology Download PDFInfo
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- CN220927778U CN220927778U CN202322373266.8U CN202322373266U CN220927778U CN 220927778 U CN220927778 U CN 220927778U CN 202322373266 U CN202322373266 U CN 202322373266U CN 220927778 U CN220927778 U CN 220927778U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 182
- 239000010959 steel Substances 0.000 claims abstract description 182
- 239000004567 concrete Substances 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims description 25
- 238000009826 distribution Methods 0.000 claims description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 description 13
- 238000010276 construction Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000007667 floating Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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Abstract
The utility model provides a large-diameter pile foundation working platform for deep water karst geology, which comprises the following components: the steel cofferdam is arranged on a river bed of the processed karst geology; the steel pile casing system is arranged on a riverbed in the steel cofferdam; the bottom sealing concrete is poured at the inner bottom of the steel cofferdam; a plurality of girders mounted on the steel casing system; a plurality of girder coupling systems installed between the girders; and the bridge deck is installed on the girder. The utility model can save labor intensity and shorten working period.
Description
Technical Field
The utility model relates to the technical field of pile foundation operation platforms, in particular to a large-diameter pile foundation operation platform for deep water karst geology.
Background
When the existing railway bridge engineering water large-diameter bored pile is constructed, a water platform is generally erected to serve as a platform for operation and shape shifting of equipment such as a drilling machine, a crawler crane, a concrete tank car and the like, if geology is hard and is in karst landform, and the diameter of a drilled hole is large, in order to ensure the construction period and better optimize the construction process of a karst area, the drilling machine adopts a full-rotation sleeve drilling machine and a large-torque rotary drilling machine to operate so as to meet the whole construction period, but the requirement on the safety performance of the drilling platform is high, and the stress requirement is difficult to be met by the traditional structure of adding and distributing Liang Jiabei roof beams to the tubular pile.
Disclosure of utility model
Aiming at the prior art, the utility model provides a large-diameter pile foundation working platform for deep water karst geology.
The utility model provides a large-diameter pile foundation working platform for deep water karst geology, which comprises the following components:
The steel cofferdam is arranged on a river bed of the processed karst geology;
the steel pile casing system is arranged on a riverbed in the steel cofferdam;
The bottom sealing concrete is poured at the inner bottom of the steel cofferdam;
a plurality of girders mounted on the steel casing system;
a plurality of girder coupling systems installed between the girders;
And the bridge deck is installed on the girder.
Preferably, the steel pile casing system comprises a plurality of fixed steel pile casings, wherein the top of each fixed steel pile casing is provided with a positioning steel pile casing, the outer side of each positioning steel pile casing is provided with a bracket, and the girder is installed on the bracket.
Preferably, the fixed steel casings are integrally connected by a casing tie.
Preferably, the fixed steel pile casing is positioned in the back cover concrete, and stiffening steel bars are arranged on the inner side and the outer side of the fixed steel pile casing.
Preferably, the bracket is including locating the bracket panel steel sheet on location steel pile casing both sides, two be connected through two bracket stress point banding steel sheets between the bracket panel steel sheet, the bracket panel steel sheet with be equipped with a plurality of bracket distribution stiffening steel sheets between the location steel pile casing, bracket stress point banding steel sheet with be equipped with a plurality of bracket stress point horizontal stiffening steel sheets between the location steel pile casing, be equipped with bracket stress point vertical stiffening steel sheet between the bracket stress point horizontal stiffening steel sheet, be equipped with bracket pad steel sheet on bracket stress point horizontal stiffening steel sheet and the bracket stress point vertical stiffening steel sheet.
Preferably, the girder coupling system is formed by welding Q235B groove 10 section steel and Q235B steel plates.
Preferably, the bridge deck is formed by welding Q235B engineering steel and steel plates or reinforced concrete plates.
Compared with the prior art, the utility model has the beneficial effects that: the utility model provides a large-diameter bored pile water operation platform aiming at the condition that the riverbed geology of the deepwater environment is hard rock, which meets the load requirement of large heavy equipment with the weight of more than kiloton, has good stress performance and is not easy to damage; the pile of the platform utilizes the steel pile casing for pile foundation drilling construction, so that the material and the cost are saved; the bracket of the steel casing is used for replacing the stress of the traditional distribution beam, so that the operation of a drilling machine is not influenced, and system conversion is not caused; the construction process of the water platform is that the whole section is detached, the number of the disassembly times is small, the labor intensity is saved, and the working period is shortened.
Drawings
FIG. 1 is a schematic plan view of an embodiment of the present utility model;
FIG. 2 is a schematic front view of an embodiment of the present utility model;
fig. 3 is a schematic structural view of a bracket according to an embodiment of the present utility model.
Fig. 4 is a schematic structural view of a reinforcing bar according to an embodiment of the present utility model.
In the figure, 1, a steel cofferdam; 2. sealing bottom concrete; 3. a girder; 4. a girder coupling system; 5. a bridge deck; 6. a river bed; 7. fixing a steel pile casing; 71. a casing coupling system; 8. positioning a steel pile casing; 9. a bracket; 91. bracket panel steel plate; 92. bracket stress point edge sealing steel plate; 93. the bracket is distributed with stiffening steel plates; 94. transverse stiffening steel plates at the stress points of the bracket; 95. a bracket stress point vertical stiffening steel plate; 96. a bracket pad steel plate; 10. stiffening reinforcing steel bars; 101. vertical steel bars at the outer side of the pile casing; 102. transverse steel bars at the outer side of the pile casing; 103. transverse steel bars at the inner side of the pile casing; 11. trestle platform.
Detailed Description
The utility model is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the utility model easy to understand.
The utility model provides a large-diameter pile foundation working platform for deep water karst geology, which is shown in figures 1-4 and comprises a steel cofferdam 1, a steel pile casing system, bottom sealing concrete 2, a plurality of girders 3, a plurality of girder coupling systems 4 and bridge decks 5.
The steel cofferdam 1 is installed on a riverbed 6 of the processed karst geology and is used as a water retaining structure for bearing platform construction, the water retaining structure is manufactured in blocks according to a design drawing in a processing plant, is assembled in sections at a wharf, and is hoisted to a design position by utilizing ship water transportation and floating crane and is positioned stably.
The steel pile casing system is installed on a riverbed in the steel cofferdam 1 through hoisting equipment and inserting equipment, the steel pile casing system comprises a plurality of fixed steel pile casings 7, the top of each fixed steel pile casing 7 is provided with a positioning steel pile casing 8, and the outer side of each positioning steel pile casing 8 is provided with a bracket 9. The steel pile casing is rolled by adopting Q235B steel plates, and the sections of the ports at the two ends are vertical to the axes of the steel pile casing, and the lengths of the axes of the steel pile casings are consistent, or a fixed-length spiral pipe is selected.
Further, the bracket 9 comprises bracket panel steel plates 91 arranged at two sides of the positioning steel protective cylinder 8, the two bracket panel steel plates 91 are connected through two bracket stress point edge sealing steel plates 92, a plurality of bracket distribution stiffening steel plates 93 are arranged between the bracket panel steel plates 91 and the positioning steel protective cylinder 8, a plurality of bracket stress point transverse stiffening steel plates 94 are arranged between the bracket stress point edge sealing steel plates 92 and the positioning steel protective cylinder 8, bracket stress point vertical stiffening steel plates 95 are arranged between the bracket stress point transverse stiffening steel plates 94, bracket shoveling steel plates 96 are arranged on the bracket stress point transverse stiffening steel plates 94 and the bracket stress point vertical stiffening steel plates 95, and the girder 3 is arranged on the bracket stress point edge sealing steel plates 92 of the bracket. The bracket 9 is integrally and symmetrically arranged, is manufactured by dividing two equal pieces according to the axis in a factory, and is sequentially welded with the positioning steel casing 8 into a whole.
Further, a plurality of fixed steel casings 7 are integrally connected by a casing tie 71. The pile casing coupling system 71 is manufactured by profiling steel pipe piles made of Q235B materials, and the pile casing coupling system 71 is welded into a whole between the steel pile casings and the steel cofferdam.
The steel pile casing system is used for manufacturing and welding the bracket 9 on the outer side of the positioning steel pile casing 8 with the corresponding elevation according to the design drawing in a processing plant, and welding quality grade is two-level. After the steel pile casing is transported to the site, the steel pile casing is butt welded with a fixed steel pile casing 7, and after the length of the steel pile casing meets the requirement, a pile casing connecting system 71 is used for connecting the steel pile casing system into a whole to be used as a main stress structure of the water platform.
The bottom sealing concrete 2 is poured at the inner bottom of the steel cofferdam 1, the underwater pouring process is utilized to pour the concrete so as to play a role in sealing the steel cofferdam 1, and the steel pile casing of the pile foundation is anchored to a certain depth and can meet the anti-floating stress requirement during construction of the bearing platform.
The leveling layer is mainly used for breaking out the opening of the solution cavity by using a machine according to the position of the karst cave revealed by the drawing, and the concrete is poured by adopting an underwater pouring process, so that the stress requirements of later loads of the steel cofferdam and the water pile foundation working platform are mainly met.
Further, the inner side and the outer side of the fixed steel pile casing 7 in the back cover concrete 2 are respectively provided with stiffening steel bars 10, each stiffening steel bar comprises a pile casing outer side vertical steel bar 101, a pile casing outer side horizontal steel bar 102 and a pile casing inner side horizontal steel bar 103, the stiffening steel bars 10 and the fixed steel pile casing 7 are subjected to intermittent welding, the welding seam distance is not more than 30cm, the welding seam height is not less than 8mm, and welding slag cannot be entrained. The fixed steel pile casing 7 is welded on the inner side and the outer side of the steel cofferdam back cover concrete by adopting stiffening steel bars 10 in the range of the steel cofferdam back cover concrete, and the binding force between the fixed steel pile casing 7 and the back cover concrete 2 and the bored pile can be enhanced so as to prevent the cofferdam from floating up after pumping water.
And a plurality of girders 3 are arranged on the steel pile casing system, and the girders are connected by adopting a girder coupling system 4. The girder 3 is manufactured by adopting Q355B steel plate profiling, the height of the girder is matched with the height of the bailey girder of the trestle platform 11, the stiffening plate is welded at the stressed position corresponding to the platform drilling machine and the heavy track crane station, and the groove weld joints are required to be penetrated, and the quality grade is two-level. The girder 3 is manufactured in a segmented mode, bolt holes are reserved in group bolts at the section, and high-strength bolts are used for on-site connection to form a whole. The girder connecting system 4 is formed by welding Q235B groove 10 section steel and Q235B steel plates in a factory, and is welded with the girder 3 into a whole on site, and the appearance quality standard is three-level.
The bridge deck 5 is mounted on the girder 3 to form an operation platform for equipment such as a drilling machine, a crane and the like. The bridge deck 5 may be formed by welding Q235B steel and steel plates or by using reinforced concrete plates.
The installing and detaching construction method of the large-diameter pile foundation operation platform comprises the following steps:
S1, processing bedrock in the range of a cofferdam and a water operation platform by using mechanical equipment to enable elevation and profile to meet requirements, revealing the condition of a karst cave according to drilling results, and breaking out an opening of a karst cavity by using equipment such as an underwater heavy hammer or a drilling machine;
Wherein, the filling can be performed in a pre-grouting mode according to the position and the size of the karst cave; the construction machinery can break the karst cave roof by using equipment such as a water-under gun head machine, a digging bucket and the like, and the opening size needs to meet the requirement of filling of underwater concrete;
S2, manufacturing steel cofferdam unit elements according to the design of a drawing, transporting the steel cofferdam unit elements to be assembled into a whole section at a wharf, transporting the steel cofferdam unit elements to a pier position by using a ship, hoisting the steel cofferdam unit elements to a design position, repeating the steps, assembling the steel cofferdam unit elements into a whole at a segmental hoisting site, pouring blade concrete, sinking water in place and positioning the steel cofferdam unit elements firmly;
s3, sucking mud and dredging in the cofferdam range, and pouring leveling layer concrete under water;
S4, manufacturing steel pile casings in sections according to the distance from the water drilling platform to the riverbed and the requirements of a design drawing, welding lifting lugs and other components, and welding stiffening steel bars at the outer side of the bottom of the fixed steel pile casings in the range of the steel cofferdam back cover concrete;
S5, welding the bracket into two single elements according to the axis in advance according to a design drawing, then sequentially welding the bracket single elements on the outer side of the positioning steel protective cylinder, ensuring that a welding seam is required to be penetrated, ensuring that the height of the welding seam is not less than 10mm, and detecting the corresponding welding quality;
S6, transporting the steel pile casing to the pier position by adopting a flat ship, hoisting and fixing the steel pile casing 7 to a designed position by utilizing a floating crane, adjusting the inclination, fixing the steel pile casing, hoisting and positioning the steel pile casing 8, adjusting the inclination, butt-welding the steel pile casing with the fixed steel pile casing 7, and sequentially welding until the whole steel pile casing is installed, and sequentially completing the steel pile casing installation work of all pile foundations of the pier according to the step;
The outer edge pile foundation can be selected to fix the pile casing with the steel cofferdam by using the section steel, and then the inner side pile foundation pile casing is fixed successively; in order to ensure the verticality of the steel pile casing, steel is welded at the symmetrical positions of the bottom opening of the steel pile casing, and when the pile casing is placed, a diver performs shoveling on the steel pile casing under water; when the river bed geology is soft soil, the steel pile casing can be made to enter the soil to a certain depth in a plugging mode, so that a certain self-anchoring capacity is formed;
S7, installing a pile casing connection system 71 between the steel pile casings and a connection system between the steel pile casings and the steel cofferdam;
s8, pouring steel cofferdam back cover concrete, wherein an underwater pouring process can be adopted;
S9, retesting the elevation of the top surface of each pile casing bracket, and paving an adjusting steel plate according to retesting results;
wherein, when the inclination is retested, the elevation of the bracket is used as a control key point, so that the balance of the girder stress is ensured;
S10, installing the girder 3 in a sectional hoisting mode, and installing all the girders 3 into a whole by bolts;
the girder 3 can be connected in a welding mode, but welding quality is ensured, and a welding stiffening plate is added;
s11, welding a transverse girder coupling system 4 between the girders 3;
Wherein, the girder connecting system 4 can adopt Z shape or triangle shape to increase stability, and the girder connecting system 4 material can adopt materials such as steel, channel steel or spiral pipe pile according to stress calculation;
S12, the bridge deck 5 is welded and installed into single elements in a processing plant according to the drawing requirements, transported to the site, laid on the girder 3, installed and limited, wherein the limited positions can be clamped on two sides of the flange of the girder at the bottom position of the bridge deck by adopting profile steel welding, and the water drilling platform erection is completed.
The foregoing is only the embodiments of the present utility model, and therefore, the patent scope of the utility model is not limited thereto, and all equivalent structures made by the description of the utility model and the accompanying drawings are directly or indirectly applied to other related technical fields, which are all within the scope of the utility model.
Claims (7)
1. A large diameter pile foundation work platform for deep water karst geology, comprising:
The steel cofferdam is arranged on a river bed of the processed karst geology;
the steel pile casing system is arranged on a riverbed in the steel cofferdam;
The bottom sealing concrete is poured at the inner bottom of the steel cofferdam;
a plurality of girders mounted on the steel casing system;
a plurality of girder coupling systems installed between the girders;
And the bridge deck is installed on the girder.
2. The large diameter pile foundation work platform for deep water karst geology of claim 1, wherein said steel casing system comprises a plurality of fixed steel casings, the top of said fixed steel casings being provided with positioning steel casings, the outer sides of said positioning steel casings being provided with brackets, said girders being mounted on said brackets.
3. The large diameter pile foundation work platform for deep water karst geology of claim 2, wherein said plurality of fixed steel casing are connected in one piece by a casing tie.
4. A large diameter pile foundation working platform for deep water karst geology according to claim 2 or 3, wherein the fixed steel casing is provided with stiffening bars on the inner and outer sides of the back cover concrete.
5. A large diameter pile foundation working platform for deepwater karst geology as claimed in claim 2 or 3, wherein the bracket comprises bracket panel steel plates arranged at two sides of the positioning steel casing, the two bracket panel steel plates are connected through two bracket stress point edge sealing steel plates, a plurality of bracket distribution stiffening steel plates are arranged between the bracket panel steel plates and the positioning steel casing, a plurality of bracket stress point transverse stiffening steel plates are arranged between the bracket stress point edge sealing steel plates and the positioning steel casing, a bracket stress point vertical stiffening steel plate is arranged between the bracket stress point transverse stiffening steel plates, and bracket shoveling steel plates are arranged on the bracket stress point transverse stiffening steel plates and the bracket stress point vertical stiffening steel plates.
6. A large diameter pile foundation work platform for deep water karst geology according to any one of claims 1-3, wherein said girder tie is welded from Q235B channel 10 section steel and Q235B steel plate.
7. A large diameter pile foundation work platform for deep water karst geology according to any one of claims 1-3, wherein the deck slab is formed by welding Q235B steel and steel plates or by reinforced concrete slabs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322373266.8U CN220927778U (en) | 2023-09-01 | 2023-09-01 | Large-diameter pile foundation operation platform for deep water karst geology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322373266.8U CN220927778U (en) | 2023-09-01 | 2023-09-01 | Large-diameter pile foundation operation platform for deep water karst geology |
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| Publication Number | Publication Date |
|---|---|
| CN220927778U true CN220927778U (en) | 2024-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322373266.8U Active CN220927778U (en) | 2023-09-01 | 2023-09-01 | Large-diameter pile foundation operation platform for deep water karst geology |
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| Country | Link |
|---|---|
| CN (1) | CN220927778U (en) |
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2023
- 2023-09-01 CN CN202322373266.8U patent/CN220927778U/en active Active
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