CN215906728U

CN215906728U - Floating type drilling construction platform

Info

Publication number: CN215906728U
Application number: CN202121752015.5U
Authority: CN
Inventors: 刘颖; 王辉; 苏怀平; 刘若展; 魏永拴; 李全生; 杨杰; 卢圣锾; 李生海; 赵冉; 李莹
Original assignee: China Communications 2nd Navigational Bureau 2nd Engineering Co Ltd
Current assignee: China Communications 2nd Navigational Bureau 2nd Engineering Co Ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-02-25
Anticipated expiration: 2031-07-28

Abstract

The utility model discloses a floating drilling construction platform which comprises a buoyancy tank and an inserted rod device. The buoyancy tank comprises a bearing platform and a weight adjusting bin, the bearing platform is used for bearing the rotary drilling rig, the bearing platform is provided with a notch used for construction of the rotary drilling rig, the weight adjusting bin is arranged at the bottom of the bearing platform, and the weight adjusting bin can float on the water surface to support the bearing platform. The inserted bar device comprises a limiting mechanism and an inserted bar, the limiting mechanism is installed on the bearing platform, one end of the inserted bar can be inserted into the covering layer to be fixed, and the other end of the inserted bar penetrates through the limiting mechanism. Above-mentioned floating drilling construction platform can creep into the pore-forming fast under the condition that there is not a dado that protects the mud, has effectively reduced the pollution of mud to the all ring edge borders for the construction progress of steel trestle, the stability of flotation tank when the inserted bar device can guarantee drilling in aqueous simultaneously guarantees the pore-forming quality.

Description

Floating type drilling construction platform

Technical Field

The utility model relates to the technical field of bridge construction, in particular to a floating drilling construction platform.

Background

The Jinjianren express way starts from a Jintang Daodao in the New City of Huai Zhou, ends at the Jianyang City boundary, passes through the Jintang, Jianyang and high and new areas, is a newly-built road section on the whole line, and has the total length of about 67.5 kilometers. In order to meet the traffic requirements of small vehicles and construction vehicles in society, before the main body engineering construction of the section, a protective channel is built in the range of the section, the total length of the protective channel is 1.6km, 3 protective steel trestles are arranged at positions meeting or crossing the Tuojiang, the No. 1 and No. 3 steel trestles cross the gully, and the No. 2 steel trestle crosses the Tuojiang. The span of a non-navigation hole in water of the No. 2 steel trestle is 24m, the span of the navigation hole is 46m, the number of piers in water is 9, and 6 steel pipe piles with the diameter of 1000 multiplied by 12mm are arranged on each pier.

For a No. 2 steel trestle, the water depth at the bridge position is 6-9 m, the covering layer is loose pebbles, the thickness is 0-60 cm, the bedrock is sandy mudstone and siltstone, the steel pipe pile is required to be embedded into the bedrock by 9-13 m, the steel pipe pile is inserted after the hole leading of the drilling machine is completed, and then C30 concrete is poured to the top surface of the covering layer. At present, the following methods are mainly used for drilling the shallow overburden deep water pile foundation:

one method is that a steel trestle is erected to a pier position, and then a drilling platform is erected to carry out pile foundation drilling construction, and the method has the advantages that the process is mature, the drilling construction is carried out by water to land through the temporary steel trestle and the drilling platform, and the defects that the construction cost is high and the construction progress is slow are overcome;

one method is to adopt a floating platform mounting protective cylinder and adopt an impact drilling machine to carry out pile foundation pore-forming construction, and the method has the advantages of mature process and lower construction cost, and has the defects of complex manufacturing process of the floating platform, slow construction progress and high requirement on environmental protection measures;

the method has the advantages that the process is mature, the construction progress is fast, the defects that large ships are needed, the hydro hubs are arranged on the upper and lower reaches of the Tuo river in a project area, no large ships can pass through, and the construction cost is high.

SUMMERY OF THE UTILITY MODEL

Therefore, the floating drilling construction platform is needed to solve the problems, the construction progress of the steel pipe pile hole leading of the overwater steel trestle is accelerated, and remarkable social and economic benefits are obtained.

A floating borehole construction platform, comprising:

the floating box comprises a bearing platform and a weight adjusting bin, wherein the bearing platform is used for bearing the rotary drilling rig, the bearing platform is provided with a gap for construction of the rotary drilling rig, the weight adjusting bin is arranged at the bottom of the bearing platform, and the weight adjusting bin can float on the water surface to support the bearing platform; and

the inserted bar device comprises a limiting mechanism and an inserted bar, wherein the limiting mechanism is installed on the bearing platform, one end of the inserted bar can be inserted into the covering layer to be fixed, and the other end of the inserted bar penetrates through the limiting mechanism.

In one embodiment, a window is formed in the bearing platform and is communicated with the weight adjusting bin.

In one embodiment, the load-bearing platform is provided with a bollard for connecting anchor lines.

In one embodiment, the limiting mechanism comprises:

the support is arranged on the bearing platform, the inserted bar penetrates through the support, and the side wall of the inserted bar is provided with insertion holes at intervals, and the insertion holes extend along the axial direction of the inserted bar;

the jacking ring is sleeved outside the inserted rod and provided with a connecting hole;

the plug pin sequentially penetrates through the connecting hole and the jack hole so as to connect the jacking ring with the inserted link;

the driving piece is arranged on the jacking ring; and

the carrying platform is arranged in the support, the insertion rod penetrates through the carrying platform, the carrying platform is connected with the driving piece, the driving piece can be jacked up to drive the carrying platform to move, and the position of the carrying platform relative to the insertion rod is adjusted.

In one embodiment, the support comprises a positioning ear hoop, an anchor beam, upright columns and a connecting beam, the anchor beam is installed on the bearing platform, the positioning ear hoop is connected with the anchor beam, the inserted link is arranged in the positioning ear hoop in a penetrating mode, the upright columns are installed on the anchor beam, and two adjacent upright columns are connected through the connecting beam.

In one embodiment, a hoist lifting lug is arranged on the upright post.

In one embodiment, the carrier includes a distribution beam, a bearing arm, a carrier base plate, and a carrier stiffener plate, the bearing arm is connected to the column, the distribution beam connects two adjacent bearing arms, the carrier base plate connects the bearing beam and the distribution beam, the insertion rod is inserted into the carrier base plate, the driving member is connected to the carrier base plate, and the carrier stiffener plate is installed on a side of the carrier base plate away from the driving member.

In one embodiment, the distribution beam is provided with a pressure rod, and the pressure rod can be abutted with the jacking ring.

In one embodiment, the pressing rod is slidably disposed through the distribution beam, a nut is screwed on the pressing rod, and the nuts are disposed on two opposite sides of the distribution beam.

In one embodiment, the pressing rod and the driving part are provided in plurality, and the pressing rod and the driving part are sequentially arranged at intervals along the circumferential direction of the inserted rod.

Above-mentioned floating drilling construction platform adopts the self-control flotation tank as drilling platform, utilizes and digs the characteristics that rig location is convenient soon, construction speed is fast, the construction precision is higher soon, can creep into the pore-forming fast under the condition that there is not a section of thick bamboo that protects no mud dado, has effectively reduced the pollution of mud to the surrounding environment for the construction progress of steel trestle, has also proved the construction technical feasibility of pile foundation drilling under the condition that there is not a section of thick bamboo that protects no mud dado in shallow overburden bedrock deep water. Meanwhile, the inserted bar device can ensure the stability of the floating box during drilling in water, and ensure the quality of formed holes.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings, which are required to be used in the embodiments, will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

FIG. 1 is a schematic structural view of a floating borehole construction platform according to one embodiment;

FIG. 2 is a top view of the floating borehole construction platform of FIG. 1;

FIG. 3 is a schematic view of the arrangement of the plunger assembly of FIG. 1;

FIG. 4 is a side view of the plunger assembly of FIG. 3;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 6 is a schematic view of the bayonet of FIG. 3 coupled to a jacking ring;

fig. 7 is a schematic structural view of the lifting rod of fig. 6 provided with an ear plate.

Reference numerals:

10-buoyancy tanks, 12-bearing platforms, 122-notches, 14-weight adjusting bins, 16-windows, 18-bollards, 20-inserted rod devices, 22-limiting mechanisms, 221-supports, 2211-positioning ear hoops, 2212-anchor beams, 2213-upright columns, 2214-connecting beams, 222-jacking rings, 2221-ear plates, 2222-connecting holes, 223-bolts, 224-driving pieces, 225-carrying tables, 2251-distributing beams, 2252-bearing arms, 2253-carrying table bottom plates, 2254-carrying table stiffening plates, 226-hoist lifting lugs, 227-pressing rods, 228-nuts, 24-inserted rods and 242-jacks.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather construed as embodying the utility model in accordance with the principles of the utility model.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1, the floating drilling construction platform in an embodiment is mainly used for drilling a pile foundation under a geological condition that a riverbed covering layer in water is shallow and a bedrock strength is not high. Specifically, the floating drilling construction platform comprises a buoyancy tank 10 and a rod inserting device 20.

Referring to fig. 2, the buoyancy tank 10 is used for floating on the water surface to carry the rotary drilling rig on the water surface. Specifically, buoyancy tank 10 includes a load-bearing platform 12 and a ballast tank 14. The bearing platform 12 is used for bearing the rotary drilling rig, the bearing platform 12 is provided with a notch 122 for construction of the rotary drilling rig, and the rotary drilling rig can perform drilling construction through the notch 122. In one embodiment, the number of the notches 122 is two, and the two notches 122 are respectively located at two opposite sides of the supporting platform 12.

The weight adjusting bin 14 is arranged at the bottom of the bearing platform 12, and the weight adjusting bin 14 can float on the water surface to support the bearing platform 12 and realize that the buoyancy tank 10 floats on the water surface. By varying the amount of water in the weigh bin 14, the draft of the entire raft 10 can be varied. In one embodiment, there are two sets of weight adjusting bins 14, the two sets of weight adjusting bins 14 are disposed at the bottom of the bearing platform 12 at intervals, and the number of the weight adjusting bins 14 in each set is four.

In an embodiment, a window 16 is formed in the bearing platform 12, the window 16 is communicated with the weight adjusting bins 14, each weight adjusting bin 14 is correspondingly provided with the window 16, water can be injected into the weight adjusting bin 14 through the window 16, the draft of the buoyancy tank 10 is changed, and a maintainer can enter the weight adjusting bin 14 through the window 16 to realize the overhaul of the weight adjusting bin 14. In one embodiment, the load-bearing platform 12 is provided with a bollard 18, the bollard 18 being used to connect mooring lines, which are connected to ground anchors on the shore to position and stabilize the pontoon 10 on the water surface.

Inserted bar device 20 is installed on load-bearing platform 12, and inserted bar device 20 is used for stabilizing flotation tank 10, and flotation tank 10 rocks when avoiding aquatic drilling, influences the pore-forming quality. In one embodiment, the buoyancy tank 10 is rectangular, the number of the rod insertion devices 20 is four, and four rod insertion devices 20 are respectively located at four corners of the buoyancy tank 10.

Specifically, the insertion rod device 20 includes a limiting mechanism 22 and an insertion rod 24, the limiting mechanism 22 is installed on the bearing platform 12, one end of the insertion rod 24 can be inserted into the covering layer for fixing, and the other end of the insertion rod 24 penetrates through the limiting mechanism 22. The inserted rod 24 is stabilized in the covering layer, and the limiting mechanism 22 is connected with the inserted rod 24 and the bearing platform 12, so that the stability of the buoyancy tank 10 on the water surface can be ensured.

Referring to fig. 3 to 5, in one embodiment, the position-limiting mechanism 22 includes a support 221, a lift ring 222, a pin 223, a driving member 224, and a carrier 225. The bracket 221 is installed on the bearing platform 12, and the insertion rod 24 is inserted into the bracket 221. Specifically, the bracket 221 includes a positioning ear 2211, an anchor beam 2212, a post 2213, and a tie beam 2214. The anchor beam 2212 is mounted on the bearing platform 12, the positioning ear 2211 is connected with the anchor beam 2212, and the inserted bar 24 is arranged in the positioning ear 2211 in a penetrating way. The columns 2213 are mounted on anchor beams 2212, and two adjacent columns 2213 are connected by tie beams 2214. Further, the top end of the upright column 2213 is provided with a hoist lifting lug 226, which is convenient for hoisting and transporting the inserting rod device 20.

Referring to fig. 6 and 7, the lifting ring 222 is sleeved outside the insert rod 24, and the lifting ring 222 is located between the positioning ear 2211 and the carrier 225. The jacking ring 222 is provided with a connecting hole 2222, the side wall of the insertion rod 24 is provided with a plurality of insertion holes 242, and the plurality of insertion holes 242 are arranged at intervals along the axial direction of the insertion rod 24. The plug 223 is sequentially inserted into the connection hole 2222 and the insertion hole 242 to connect the lift ring 222 and the plug rod 24. In an embodiment, the jacking ring 222 is provided with an ear plate 2221, the connecting hole 2222 is opened on the ear plate 2221, the connecting hole 2222 is a half hole, and after the plug pin 223 is inserted into the connecting hole 2222, the jacking ring 222 is supported on the plug pin 223.

Referring to fig. 3 to 5 again, the driving member 224 is mounted on the lifting ring 222, the carrier 225 is mounted in the bracket 221, the insert rod 24 is inserted into the carrier 225, the carrier 225 is connected to the driving member 224, and the driving member 224 can lift the carrier 225 to move, so as to drive the limiting mechanism 22 to lift and further adjust the position of the supporting platform 12 relative to the insert rod 24. In one embodiment, the driving member 224 is a jack. It is understood that in other embodiments, the driving member 224 may be other structures that can move and lift the stage 225, such as a linear motor or a hydraulic cylinder.

In one embodiment, stage 225 includes a distribution beam 2251, load bearing arms 2252, a stage base plate 2253, and a stage stiffener 2254. The bearing arms 2252 are connected to the columns 2213, the distribution beam 2251 connects two adjacent bearing arms 2252, the stage base 2253 connects the distribution beam 2251 to the bearing arms 2252, the insert rod 24 is inserted into the stage base 2253, and the driving member 224 is connected to the stage base 2253. Specifically, the number of the distribution beams 2251 and the number of the bearing arms 2252 are two, the two distribution beams 2251 and the two bearing arms 2252 enclose a rectangular space, and the stage base plate 2253 is located in the space enclosed by the bearing beams and the distribution beams 2251. Stage stiffener 2254 is mounted to a side of stage base plate 2253 away from driver 224, and stage stiffener 2254 may ensure strength of stage base plate 2253 and prevent stage base plate 2253 from deforming under the lift-up of driver 224.

In addition to the above embodiments, the distribution beam 2251 further includes a pressing rod 227, the pressing rod 227 can be abutted to the top ring 222, the pressing rod 227 can support the carrier 225, and the pressing rod 227 can be supported between the carrier 225 and the top ring 222, so as to prevent the driving member 224 from being damaged by long-term pressure. Specifically, the pressing rod 227 is slidably disposed through the distribution beam 2251, the nut 228 is screwed on the pressing rod 227, and the nut 228 is disposed on two opposite sides of the distribution beam 2251. After the driving member 224 lifts the stage 225, the position of the pressing rod 227 is adjusted to make the pressing rod 227 abut against the lifting ring 222, and then the nuts 228 on both sides are fastened to fix the pressing rod 227.

In one embodiment, the plurality of pressing rods 227 and the plurality of driving members 224 are provided, and the plurality of pressing rods 227 and the plurality of driving members 224 are sequentially arranged at intervals along the circumferential direction of the insertion rod 24, so that the uniform stress of the carrier 225 can be ensured.

The process of drilling construction of the floating drilling construction platform is as follows:

the design of the drilling construction platform is charged by a company structural design room, and the function of the drilling construction platform is ensured to meet the construction requirements. And selecting a processing unit to process the drilling construction platform according to the drawing requirements, processing the drilling construction platform into blocks in a factory, splicing and welding on site, hoisting the drilling construction platform into water by a crane after welding of the group of weight adjusting bins 14, and splicing and welding the drilling construction platform into the whole drilling construction platform in water.

The drilling construction platform is positioned by using a shore anchor rope, and the rotary drilling rig is put in place by opening the upper buoyancy tank 10 through the steel temporary bridge. Before the base drilling operation, the covering layer at the pile position is dug and cleaned by using a water upper digging machine, so that the quality of formed holes is ensured. During pile foundation drilling, the buoyancy tank 10 is limited and fixed through the four-corner inserted rod device 20, the drilling machine is guaranteed not to shake during drilling, and hole forming quality is improved. And after the pile foundation drilling is finished, timely lowering the steel pipe pile and pouring pile foundation underwater anchoring section concrete.

The floating type drilling construction platform adopts the self-made buoyancy tank 10 as a drilling platform, utilizes the characteristics of a rotary drilling rig that the positioning is convenient, the construction speed is high and the construction precision is higher, can quickly drill into a hole under the condition of no pile casing and no mud retaining wall, has the drilling speed of 2m in each hour at sandy mudstone and siltstone strata with low strength, effectively reduces the pollution of mud to the surrounding environment, accelerates the construction progress of a steel trestle, and also proves the feasibility of the construction technology of pile foundation drilling under the condition of no pile casing and no mud retaining wall of shallow overburden bed rock, and has the advantages of relatively less investment, quick construction, high safety and strong adaptability. Meanwhile, the rod inserting device 20 can ensure the stability of the floating box 10 during drilling in water, and ensure the quality of formed holes.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. A floating borehole construction platform, comprising:

2. The floating borehole construction platform of claim 1, wherein the load-bearing platform has a window formed therein, the window communicating with the weight adjustment bin.

3. The floating borehole construction platform of claim 1, wherein the load-bearing platform is provided with a bollard for connecting an anchor line.

4. The floating borehole construction platform of claim 1, wherein the stop mechanism comprises:

the driving piece is arranged on the jacking ring; and

5. The floating drilling construction platform of claim 4, wherein the support comprises a positioning ear, an anchor beam, a column and a connecting beam, the anchor beam is mounted on the bearing platform, the positioning ear is connected with the anchor beam, the insert rod is inserted into the positioning ear, the column is mounted on the anchor beam, and two adjacent columns are connected through the connecting beam.

6. The floating drilling construction platform of claim 5, wherein the upright is provided with a hoist lifting lug.

7. The floating borehole construction platform of claim 5, wherein the carrier comprises a distribution beam, bearing arms, a carrier base plate, and a carrier stiffener plate, the bearing arms are connected to the columns, the distribution beam connects two adjacent bearing arms, the carrier base plate connects the bearing arms and the distribution beam, the insertion rods are inserted into the carrier base plate, the driving member is connected to the carrier base plate, and the carrier stiffener plate is installed on a side of the carrier base plate away from the driving member.

8. The floating borehole construction platform of claim 7, wherein a compression bar is mounted on the distribution beam, the compression bar being abuttable with the jacking ring.

9. The floating borehole construction platform of claim 8, wherein the strut is slidably disposed through the distribution beam, the strut having a nut threaded thereon, and the nut being disposed on opposite sides of the distribution beam.

10. The floating borehole construction platform of claim 8, wherein the strut and the driving member are provided in plurality, and the plurality of struts and the plurality of driving members are sequentially provided at intervals in a circumferential direction of the inserted link.