CN203782685U - Special hole forming device for construction of tubular pile - Google Patents
Special hole forming device for construction of tubular pile Download PDFInfo
- Publication number
- CN203782685U CN203782685U CN201420181305.2U CN201420181305U CN203782685U CN 203782685 U CN203782685 U CN 203782685U CN 201420181305 U CN201420181305 U CN 201420181305U CN 203782685 U CN203782685 U CN 203782685U
- Authority
- CN
- China
- Prior art keywords
- highstrenghtpiston
- construction
- shoe
- strength plastic
- inner tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010276 construction Methods 0.000 title claims abstract description 61
- 239000011159 matrix material Substances 0.000 claims description 27
- 238000002844 melting Methods 0.000 claims description 13
- 238000005553 drilling Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 5
- 239000012943 hotmelt Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000005452 bending Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 230000010412 perfusion Effects 0.000 description 8
- 239000002689 soil Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 239000003643 water by type Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 208000034189 Sclerosis Diseases 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a special hole forming device for construction of a tubular pile. The special hole forming device for construction of the tubular pile comprises a high-strength plastic inner pipe and a high-strength plastic outer pipe, wherein the high-strength plastic inner pipe and the high-strength plastic outer pipe are concentric and are both high-strength plastic pipes, the tensile yield strength of each high-strength plastic pipe is equal to or larger than 10 Mpa, the density of each high-strength plastic pipe is equal to or larger than 450 kg/m<3>, the elasticity modulus of each high-strength plastic pipe is equal to or larger than 350 Mpa, a cavity between the high-strength plastic inner pipe and the high-strength plastic outer pipe serves as a pile cavity, the bottom of the pile cavity is open and is matched with a pile shoe in a downward butting and contact mode, a cutting edge is arranged at the lower end of the pile shoe, and a vibration force application pressing head is fixedly arranged at the upper end of the high-strength plastic inner pipe and the upper end of the high-strength plastic outer pipe. The special hole forming device for construction of the tubular pile has the advantages that construction is efficient and fast, the pile can be formed once, and construction of oblique piles is convenient. Concrete can be poured into the pile cavity to improve the bending resistance if necessary.
Description
Technical field
The utility model belongs to building engineering field, specifically refers to the special-purpose perforating device of construction of novel cylinder stake.
Background technology
Concrete tube stake is a kind of conventional engineering pile body, is widely used in underground construction engineering.At present traditional prefabricated concrete pipe pile is to be all embedded in undergroundly, and its major defect is: in work progress, have obvious soil compaction effect, weakened the supporting capacity as structure foundation.
The utility model people has proposed a kind of construction method of new concrete tube stake, as China Patent Publication No. CN1221056A < < is embedded in the construction method of concrete barrel and the technical scheme of forced one-step pore-creating device > > of subgrade, the method utilizes forced one-step pore-creating device that the shoe of concrete barrel bottom is pressed in subgrade, realize synchronous casting simultaneously, and disposable concrete perfusion forms concrete tube stake, compared to above-mentioned the first construction method, not only speed of application is quick, and without fetching earth and earth backing, reduce engineering cost, and little on the prototype structure impact of soil layer, the supporting capacity of concrete tube stake is provided.Yet this construction method can only be applicable to land, and cannot be suitable for for the interior piling in waters (as maritime waters or rivers and lakes).Because this method is when construction, after penetration concrete, and concrete is for before solidifying, outer retaining wall sleeve and interior retaining wall sleeve upwards need to be pulled out, as this construction method is applied to waters, when outer retaining wall sleeve and interior retaining wall sleeve are upwards pulled out, the concrete exposing is sclerosis completely not, and be directly subject to the impact in waters, directly cause concrete to be broken up and cannot moulding.
For this reason, the utility model people has has further researched and developed a kind of construction technology and special-purpose perforating device thereof that is applied to the Cast-in-situ Concrete Tubular Pile in waters, as shown in China Patent Publication No. 103321215A.This technique of constructing is by arranging outer retaining wall indwelling layer in retaining wall sleeve outside, when concrete perfusion, it is separated with gland with motionless and outer retaining wall indwelling layer upper end, shoe holding position that the outer retaining wall of outer retaining wall sleeve is kept somewhere layer, the concrete of perfusion forms concrete tube stake together with being linked to be with the outer retaining wall indwelling layer in outside and the shoe of lower end.Yet still there is following shortcoming in this construction technology
(1) need to pull out the parts such as interior retaining wall sleeve executing in man-hour requirement, be difficult to carry out taper pile construction;
(2) when concrete perfusion, need reinforcing cage as skeleton, construction cost is high, and man-hour is long, and difficulty of construction is larger.
Utility model content
The purpose of this utility model is the shortcoming and defect existing in order to overcome prior art, and a kind of taper pile construction of conveniently carrying out is provided, and the special-purpose perforating device of the construction of a kind of stake of pile high-efficiency and economic.
For realizing above-mentioned purpose of the present utility model, the technical solution of the utility model is highstrenghtpiston's inner tube and the highstrenghtpiston's outer tube that includes concentric setting, this highstrenghtpiston's outer tube and highstrenghtpiston's inner tube are High strength plastic pipe, tensile yield strength>=the 10Mpa of this High strength plastic pipe, density>=450kg/m
3modulus of elasticity>=350Mpa, cavity between this highstrenghtpiston's inner tube and highstrenghtpiston's outer tube is cylinder chamber, the bottom opening in described cylinder chamber and compress downwards and contact cooperation with shoe, the lower end of this shoe is provided with cutting edge, and described highstrenghtpiston's inner tube and the upper end of highstrenghtpiston's outer tube are fixedly installed vibration application of force pressure head.
Perforating device of the present utility model carries out a pile driving construction by following scheme,
(1) annular is loaded onto and with the shoe of cutting edge in the bottom in the cylinder chamber forming between highstrenghtpiston's outer tube and highstrenghtpiston's inner tube; This highstrenghtpiston's outer tube and highstrenghtpiston's inner tube are High strength plastic pipe, the tensile yield strength>=10Mpa of this High strength plastic pipe, density>=450kg/m
3, modulus of elasticity>=350Mpa;
(2) shoe be placed in to construction location and exert pressure on vibration application of force pressure head, shoe enters construction ground matrix together with highstrenghtpiston's inner tube in company with highstrenghtpiston's outer tube; Construction ground matrix can be soil layer, layer of sand or rock mass etc.
(3) after the calibration position that enters construction ground matrix completely until shoe, form cylinder stake, this stake includes highstrenghtpiston's outer tube, highstrenghtpiston's inner tube and shoe.
Continuous progress along with current plastic pipe technique, the mechanical property of plastic pipe constantly promotes, and plastic pipe own compared to traditional steel pipe on cost more economically, and the good corrosion resistance of plastic pipe own, service life is long, and the hot melt of plastic pipe connects compared with the techniques such as welding of metal convenient in construction, better tightness.By above-mentioned setting, formed cylinder pile driving construction is convenient and swift, and cost is low, can be widely used in the construction work of multiple fields, in addition, this setting, because the price comparison of plastic pipe own is cheap, therefore when construction, without highstrenghtpiston's outer tube and highstrenghtpiston's inner tube are extracted, therefore, facilitate batter piling construction, thus, the very big low using value that has improved cylinder stake of the present utility model.
Further arranging is that described shoe includes highstrenghtpiston's shoe matrix, and described cutting edge is fixedly installed on highstrenghtpiston's shoe matrix bottom, the tensile yield strength>=10Mpa of this highstrenghtpiston's shoe matrix, density>=450kg/m
3, modulus of elasticity>=350Mpa, the upper surface of this shoe forms hot melt with the bottom of highstrenghtpiston's outer tube and highstrenghtpiston's inner tube and is fixedly connected with.By this setting, make easy to connect reliable between shoe and highstrenghtpiston's outer tube and highstrenghtpiston's inner tube.
Further arranging is that described cutting edge is the metal cutting sword that composite solid schedules highstrenghtpiston's shoe matrix bottom.By this setting, improved the ability of breaking ground of shoe, by this setting, in conjunction with vibrating hammer, can make shoe embed soil layer or severely-weathered layer.
Further arranging is that described highstrenghtpiston's outer tube is connected and formed by the upper and lower heat-melting butt-joint of multistage highstrenghtpiston outer segment, and described highstrenghtpiston's inner tube is connected and formed by the upper and lower heat-melting butt-joint of pipeline section in multistage highstrenghtpiston.By this setting, by the heat-melting butt-joint when constructing of pipeline section in multistage highstrenghtpiston outer segment or highstrenghtpiston, therefore, be convenient to a section construction, the also transportation of constructability material simultaneously.
Further arranging is that the upper end height of highstrenghtpiston's outer segment of phase same layer in highstrenghtpiston's outer tube and highstrenghtpiston's inner tube is lower than the upper end of pipeline section in highstrenghtpiston.By this setting, when construction, in highstrenghtpiston's outer segment of same layer and highstrenghtpiston, the upper end difference in height of pipeline section, is conveniently used for arranging heat-melting butt-joint setting, so that pipeline section in the highstrenghtpiston of inner side is carried out to heat-melting butt-joint construction.
Further arrange is to be provided with for carrying out the spiral drilling machine of Pile in the inner chamber of described highstrenghtpiston's inner tube.By this setting, for some soil layers bottom, there is the construction ground matrix of solid rock, by the broken rock of auger of spiral drilling machine, get stone, then the socketed pile of constructing, greatly improve range of application and the support strength of this technique.
Further arrange is that described High strength plastic pipe is high strength PE pipe, pvc pipe or PC pipe.
In sum, the utility model has the advantages that:
(1) construction technology convenient and efficient, cost is low;
(2) can construct according to requirement of engineering batter piling;
(3) pile-formation process does not produce secondary pollution mud, and environment protecting is good;
(4) can be at the disposable pile of different water depth condition;
(5) pile flexible form, can be according to actual requirement of engineering, concrete perfusion or not concrete perfusion pile;
(6) by process application of the present utility model when water body is constructed, can be in different water depths region disposable pile sinking, especially in the larger water body construction of the depth of water, create conditions.
Below in conjunction with specification drawings and specific embodiments, the utility model is described further.
Accompanying drawing explanation
Fig. 1 the utility model specific embodiment structural representation;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is that the interior pipeline section of the utility model multistage highstrenghtpiston and highstrenghtpiston's inner tube are connected and formed upper and lower heat-melting butt-joint connection schematic diagram by the upper and lower heat-melting butt-joint of pipeline section in multistage highstrenghtpiston;
Fig. 4 is the construction schematic diagram of combination spiral drilling machine of the present utility model.
The specific embodiment
Below by embodiment, the utility model is specifically described; only for the utility model is further described; can not be interpreted as the restriction to the utility model protection domain, the technician in this field can make some nonessential improvement and adjustment to the utility model according to the content of above-mentioned utility model.
The specific embodiment of the present utility model as Figure 1-4, the special-purpose perforating device that this construction technology is used, as shown in Figure 1, include highstrenghtpiston's inner tube 1 and highstrenghtpiston's outer tube 2 of concentric setting, this highstrenghtpiston's outer tube 2 and highstrenghtpiston's inner tube 1 are High strength plastic pipe, tensile yield strength>=the 10Mpa of this High strength plastic pipe, density>=450kg/m
3modulus of elasticity>=350Mpa, cavity between this highstrenghtpiston's inner tube 1 and highstrenghtpiston's outer tube 2 is cylinder chamber 3, the bottom opening in described cylinder chamber 3 and compress downwards and contact cooperation with shoe 4, the lower end of this shoe 4 is provided with cutting edge 41, described highstrenghtpiston's inner tube 1 and the upper end of highstrenghtpiston's outer tube 2 are fixedly installed application of force pressure head 5, High strength plastic pipe described in the present embodiment can be high strength PE pipe, pvc pipe or PC pipe, be preferably high strength PE pipe, tensile yield strength=the 20Mpa of this high strength PE pipe, density=950kg/m
3, modulus of elasticity=700Mpa, can directly buy from market or oneself is manufactured.
In addition, the shoe 4 described in the present embodiment includes highstrenghtpiston's shoe matrix 42, and described cutting edge 41 is fixedly installed on highstrenghtpiston's shoe matrix 42 bottoms, the tensile yield strength>=10Mpa of this highstrenghtpiston's shoe matrix, density>=450kg/m
3, modulus of elasticity>=350Mpa, the upper surface of this shoe 4 forms hot melt with the bottom of highstrenghtpiston's outer tube 2 and highstrenghtpiston's inner tube 1 and is fixedly connected with.In addition, cutting edge 41 described in the present embodiment is the metal cutting sword of composite solid due to highstrenghtpiston's shoe matrix bottom, certainly, the construction ground matrix of telling somebody what one's real intentions are for intensity, also can be directly at highstrenghtpiston's shoe matrix 42 one-body molded formation cutting edges in bottom.The identical design that these all belong to the application, should fall into the application's protection domain.The material of this highstrenghtpiston's shoe matrix 42 of the present embodiment also preferably adopts high strength PE material, the tensile yield strength=20Mpa of this high strength PE material, density=950kg/m
3, modulus of elasticity=700Mpa, can directly buy from market or oneself is manufactured.
In addition, the present embodiment vibration application of force pressure head 5 is preferably high-frequency vibratory hammer or variant-frequency vibration hammer, and this vibration application of force pressure head adopts clamper 6 and the upper end of highstrenghtpiston's outer tube 2 and highstrenghtpiston's inner tube 1 to grip.
Construction technology of the present utility model is to comprise following operation:
(1) annular is loaded onto and with the shoe 4 of cutting edge in the bottom in the cylinder chamber 3 forming between highstrenghtpiston's outer tube 2 and highstrenghtpiston's inner tube 1; This highstrenghtpiston's outer tube 2 and highstrenghtpiston's inner tube 1 are High strength plastic pipe, the tensile yield strength>=10Mpa of this High strength plastic pipe, density>=450kg/m
3, modulus of elasticity>=350Mpa;
The performance parameter of this High strength plastic pipe of the present embodiment and highstrenghtpiston's shoe matrix at least should meet These parameters under following method of testing; wherein; density adopts the method for testing of GB1033-96 (A method) to measure at 23 ℃, and tensile yield strength adopts GB3682-88; 15 method of testing is measured, and described modulus of elasticity should be measured in the method for testing of GB/T9341-88.
(2) shoe 4 be placed in to construction location and exert pressure on vibration application of force pressure head, shoe 4 enters construction ground matrix together with highstrenghtpiston's inner tube 1 in company with highstrenghtpiston's outer tube 2; This construction ground matrix of the present embodiment can be soil layer, layer of sand or water body layer.
(1) after the calibration position that enters construction ground matrix completely until shoe 4, form cylinder stake, this stake includes highstrenghtpiston's outer tube 2, highstrenghtpiston's inner tube 1 and shoe 4.
The present embodiment is when construction, and in described step (2), shoe 4, in company with highstrenghtpiston's outer tube 2 oblique construction ground matrix that enters together with highstrenghtpiston's inner tube 1, is carried out oblique cylinder pile driving construction, i.e. taper pile construction.
In addition, highstrenghtpiston's outer tube 2 described in the present embodiment by multistage highstrenghtpiston outer segment Shang Xia 21 heat-melting butt-joint connect and to form, described highstrenghtpiston's inner tube 1 by pipeline section in multistage highstrenghtpiston Shang Xia 11 heat-melting butt-joint connect and to form, in highstrenghtpiston's outer tube 2 and highstrenghtpiston's inner tube 1, the upper end height of highstrenghtpiston's outer segment 21 of phase same layer is lower than the upper end of pipeline section in highstrenghtpiston 11, difference in height between the two is generally 10-15cm, to facilitate heat-melting butt-joint to arrange preferentially, pipeline section 11 in adjacent two sections of highstrenghtpistons of highstrenghtpiston's inner tube 1 is carried out to heat-melting butt-joint construction.Referring to Fig. 3, a is the joint of highstrenghtpiston's inner tube, and b is the joint of highstrenghtpiston's outer tube.
Certainly, during for the higher construction requirement of horizontal force resistant, in described step (3), after the calibration position that enters construction ground matrix completely until shoe 4, also to the interior concrete perfusion in cylinder chamber 3, after band concrete setting, form and take the concrete tube stake that highstrenghtpiston's outer tube 2, highstrenghtpiston's inner tube 1 be support arm, referring to Fig. 4, in cylinder chamber 3, perfusion is concrete.
In addition, for soil layer bottom or water bottom, there is the construction ground matrix of solid rock, in the inner chamber of described highstrenghtpiston's inner tube 1, be provided with for carrying out the spiral drilling machine 7 of Pile.The auger 71 of spiral drilling machine 7 is the usual means of this area Pile, and it has the function that ground is got on brill limit, limit.
Claims (7)
1. the special-purpose perforating device of the construction of a cylinder stake, it is characterized in that: the highstrenghtpiston's inner tube and the highstrenghtpiston's outer tube that include concentric setting, this highstrenghtpiston's outer tube and highstrenghtpiston's inner tube are High strength plastic pipe, tensile yield strength>=the 10Mpa of this High strength plastic pipe, density>=450kg/m
3modulus of elasticity>=350Mpa, cavity between this highstrenghtpiston's inner tube and highstrenghtpiston's outer tube is cylinder chamber, the bottom opening in described cylinder chamber and compress downwards and contact cooperation with shoe, the lower end of this shoe is provided with cutting edge, and described highstrenghtpiston's inner tube and the upper end of highstrenghtpiston's outer tube are fixedly installed vibration application of force pressure head.
2. the special-purpose perforating device of the construction of a kind of stake according to claim 1, it is characterized in that: described shoe includes highstrenghtpiston's shoe matrix, it is characterized in that: described shoe includes highstrenghtpiston's shoe matrix, described cutting edge is fixedly installed on highstrenghtpiston's shoe matrix bottom, tensile yield strength>=the 10Mpa of this highstrenghtpiston's shoe matrix, density>=450kg/m
3, modulus of elasticity>=350Mpa, the upper surface of this shoe forms hot melt with the bottom of highstrenghtpiston's outer tube and highstrenghtpiston's inner tube and is fixedly connected with.
3. the special-purpose perforating device of the construction of a kind of stake according to claim 2, is characterized in that: described cutting edge is the metal cutting sword that composite solid schedules highstrenghtpiston's shoe matrix bottom.
4. the special-purpose perforating device of the construction of a kind of stake according to claim 1, it is characterized in that: described highstrenghtpiston's outer tube is connected and formed by the upper and lower heat-melting butt-joint of multistage highstrenghtpiston outer segment, described highstrenghtpiston's inner tube is connected and is formed by the upper and lower heat-melting butt-joint of pipeline section in multistage highstrenghtpiston.
5. the special-purpose perforating device of the construction of a kind of stake according to claim 4, is characterized in that: in highstrenghtpiston's outer tube and highstrenghtpiston's inner tube, the upper end height of highstrenghtpiston's outer segment of phase same layer is lower than the upper end of pipeline section in highstrenghtpiston.
6. the special-purpose perforating device of the construction of a kind of stake according to claim 1 and 2, is characterized in that: in the inner chamber of described highstrenghtpiston's inner tube, be provided with for carrying out the spiral drilling machine of Pile.
7. the special-purpose perforating device of the construction of a kind of stake according to claim 1 and 2, is characterized in that: described High strength plastic pipe is high strength PE pipe, pvc pipe or PC pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181305.2U CN203782685U (en) | 2014-04-15 | 2014-04-15 | Special hole forming device for construction of tubular pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181305.2U CN203782685U (en) | 2014-04-15 | 2014-04-15 | Special hole forming device for construction of tubular pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203782685U true CN203782685U (en) | 2014-08-20 |
Family
ID=51318888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420181305.2U Expired - Lifetime CN203782685U (en) | 2014-04-15 | 2014-04-15 | Special hole forming device for construction of tubular pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203782685U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938619A (en) * | 2014-04-15 | 2014-07-23 | 谢庆道 | Construction process of tubular pile and special hole opener of construction process |
| CN105386444A (en) * | 2015-11-23 | 2016-03-09 | 江创葵 | Foundation pile hole forming device and method |
-
2014
- 2014-04-15 CN CN201420181305.2U patent/CN203782685U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938619A (en) * | 2014-04-15 | 2014-07-23 | 谢庆道 | Construction process of tubular pile and special hole opener of construction process |
| WO2015158169A1 (en) * | 2014-04-15 | 2015-10-22 | 谢庆道 | Construction process of pipe pile and dedicated boring device thereof |
| CN105386444A (en) * | 2015-11-23 | 2016-03-09 | 江创葵 | Foundation pile hole forming device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203034467U (en) | Combined steel pile cofferdam with water-proof fore shafts | |
| AU2018102180A6 (en) | Anti-clogging strengthened permeable pile and construction method | |
| CN101525880A (en) | Plastic sleeve concrete pile and method thereof for reinforcing soft soil foundation | |
| CN103321215B (en) | Construction technology of cast-in-situ concrete tubular pile applied to water area, as well as special hole-forming device of construction technology | |
| CN101255691B (en) | Construction method for complete casing tube thin wall filling pile and movable internal mold | |
| CN104234055A (en) | Precast pile post-grouting device and precast pile post-grouting process | |
| CN104404983A (en) | Horse riding type well device for pipe jacking construction and construction method thereof | |
| CN201358456Y (en) | Plastic sleeve concrete pile | |
| CN103938619A (en) | Construction process of tubular pile and special hole opener of construction process | |
| CN104988915A (en) | Prefabrication and installation method of detachable steel protection tube device and underwater connection beam | |
| CN106948340A (en) | A kind of construction method of the Manual excavated pile structure of high polymer grouting protection | |
| CN102359112A (en) | Method for bracing foundation pit by using steel box piles | |
| CN201538975U (en) | Seepage-proofing joint of underground continuous wall | |
| CN101575859B (en) | Anti-seepage joint of underground continuous walls and construction method thereof | |
| CN109356183A (en) | A kind of open caisson reserved opening plugging structure and its construction method | |
| CN111764404A (en) | Partially recyclable secant pile supporting structure and construction method | |
| CN201826302U (en) | Boring device for large-diameter cast-in-situ thin-walled concrete composite pile | |
| CN203782685U (en) | Special hole forming device for construction of tubular pile | |
| CN102080374B (en) | Construction method of concrete filling piles | |
| CN108277800B (en) | Reinforced concrete pipe joint gravel pile with consolidated sand layer and construction method thereof | |
| CN102677657A (en) | Construction method of row cast thin-walled concrete compound pile wall and special hole forming device thereof | |
| CN208379572U (en) | A kind of anti-settling processing constructing device based on cutting edge formula propelling method | |
| CN102345287A (en) | Construction method of large-diameter cast-in-situ thin-wall concrete composite pile and special hole forming device | |
| CN203684215U (en) | Carbon fiber cloth bag type cast-in-situ anti-arch curved surface combined special-shaped pile | |
| CN103132511A (en) | Pile-forming method and pile-forming device for static pressure immersed tube expanded-base cast-in-place pile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |