CN106703028B - Large-diameter Manual Excavation Pile precast splice type steel retaining wall and its construction technology - Google Patents
Large-diameter Manual Excavation Pile precast splice type steel retaining wall and its construction technology Download PDFInfo
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- CN106703028B CN106703028B CN201611035236.4A CN201611035236A CN106703028B CN 106703028 B CN106703028 B CN 106703028B CN 201611035236 A CN201611035236 A CN 201611035236A CN 106703028 B CN106703028 B CN 106703028B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/66—Mould-pipes or other moulds
- E02D5/665—Mould-pipes or other moulds for making piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses the Large-diameter Manual Excavation Pile precast splice type steel retaining walls and its construction technology in man-made digging pile mould-pipe field, standard film and abutment flange including several arcs, standard film and abutment flange it is upper, lower both ends are respectively and fixedly provided with the arc-shaped end plate to match, a left side for standard film and abutment flange, right both ends are respectively and fixedly provided with vertical side plate, several connecting holes are equipped on end plate and side plate, bolt is equipped in connecting hole, several standard films and abutment flange are left, the side plate on right both sides is mutually bolted to form circular steel pile casting, lower end outside the standard film panel cambered surface is equipped with feed opening.The present invention solves that existing man-made digging pile mould-pipe concrete strength is low, and retaining wall overall stiffness is small, the low problem of construction efficiency.
Description
Technical field
The present invention relates to man-made digging pile mould-pipe fields, and in particular to a kind of Large-diameter Manual Excavation Pile precast splice type steel
Retaining wall and its construction technology.
Background technique
With the development of the social economy, architectural engineering is largely built, in order to adapt to the demand of various engineerings, occur some
The pile foundation of major diameter or super-large diameter, but since engineering ground limitation pile foundation pore-forming cannot introduce mechanical execution, can only lean on
The mode of hand digging carries out, artificial digging pile, be cut the earth with manpower, the reinforced concrete pile of cast in situs, application at present than
It is relatively universal.Its advantage is that easy for construction, fast speed, not needing heavy mechanical equipment, caisson is squeezed into than timber, concrete
Stake shock resistance is strong, and punching, impact cone punching, percussive drill punching, convolution drill hole of drilling machine, well foundation section are bored in cost specific impulse
It saves.To carry out artificial digging pile under conditions of ensuring safety, it usually needs carry out retaining wall after one section stake holes of every downward digging and pour
It builds, to ensure the safety of artificial digging pile.Conventional manual's caisson concrete guard wall is the native stone hole directly in excavated by manual work just
Casting concrete layer forms concrete guard wall on hole wall, binds system peace reinforcing bar using scene and forms retaining wall frame, then pours coagulation
Soil forms retaining wall.
The shortcomings that conventional manual's caisson concrete guard wall: 1) retaining wall concrete strength is low: due to each usage amount of retaining wall concrete
Very little, generally by borehole worker (mostly civilian worker) aperture with mix with, lack to retaining wall concrete material cooperation when mixes and stirs quality
Control, be to cause the too low immediate cause of intensity of retaining wall concrete.2) retaining wall concrete thickness is small: the thickness of borehole diameter decision retaining wall
Degree, the size of dado thickness are directly related to the construction efficiency of borehole.Borehole operating worker sacrifices in pursuing efficiency benefits
Dado thickness；3) retaining wall production needs scene system peace assembling reinforcement, needs to build reinforcing bar room, worker's site operation at the construction field (site)
Process is more, and construction efficiency is low, and site operation environment is dirty, unrest, difference；4) reinforcing bar retaining wall overall stiffness is smaller, when pile hole construction to compared with
When deep, if meeting compared with rippers layer, it is easy to happen retaining wall sliding and collapses and fall, to jeopardize the safety of construction personnel.
Summary of the invention
A purpose of the invention is intended to provide Large-diameter Manual Excavation Pile precast splice type steel retaining wall, existing artificial to solve
Protection wall of bored pile concrete strength is low, the small problem of retaining wall overall stiffness.
Another object of the present invention is intended to provide Large-diameter Manual Excavation Pile precast splice type steel panelling construction technique, with solution
Certainly existing man-made digging pile mould-pipe concrete strength is low, and retaining wall overall stiffness is small, the low problem of construction efficiency.
In order to achieve the above objectives, base case one of the invention is as follows: Large-diameter Manual Excavation Pile precast splice type steel shield
Wall, including several standard films and abutment flange, the standard film and abutment flange include rectangle arc surfaced panel, inside panel cambered surface
Upper/lower terminal be respectively and fixedly provided with the arc-plane end plate to match with panel radian, the left and right both ends inside panel cambered surface are solid
Surely there are vertical planar side plates, several connecting holes are equipped on the end plate and side plate, bolt, Ruo Ganbiao are equipped in connecting hole
Quasi- piece and the side plate on the left and right both sides of abutment flange are mutually bolted to form circular steel pile casting, outside the standard film panel cambered surface
The lower end in portion is equipped with feed opening, and the standard film includes the first standard film and the second standard film.
Preferred embodiment one, as a kind of improvement of basic scheme, the panel on the outside of the feed opening is equipped with blanking cover, under
The bottom of material cover is provided with opening.Setting blanking covers on passes sequentially through feed opening to gap between steel pile casting and native stone from top to bottom
Can block feed opening when concreting, avoiding the concrete of top from causing feed opening closure can not be to lower section
Gap between steel retaining wall and native stone carries out concreting.
Preferred embodiment two, a kind of preferably one improvement, be fixed with inside the cambered surface of the panel it is several in length and breadth
The stiffening plate being interspersed, stiffening plate are equipped with hole for hoist.Stiffening plate is set, structural strengthening, stiffening plate and face are carried out to steel retaining wall
T-type connection is formed between plate, enhances the anti-deformation of panel, prevents panel when casting concrete from being become by the extruding of concrete
The performance of shape influence pile foundation.
Base case two of the invention, Large-diameter Manual Excavation Pile precast splice type steel panelling construction technique, including it is following
Step:
One, unwrapping wire fixed pile, true fixed pile center add steel dado thickness as radius using center as the center of circle using pile body radius
Determine the tip size of stake holes；
Two, the stake holes earthwork is dug, is successively excavated from top to bottom from stake holes center to external radiation；
Three, standard film and abutment flange are lifted to side plate is bolted in the stake holes dug and are formed by supporting steel pile casting
Round steel pile casting；
Four, breast wall concrete is poured, pours concrete into the gap between steel pile casting and native stone；
Five, stake position axis and absolute altitude are checked；
Six, second step is repeated to the 4th step until reaching default stake holes depth；
300mm high 240mm thickness guard ring is built up with M5 cement mortar in stake holes apical lateral in the first step；Support Steel shield
First multiple first standard films are bolted when cylinder, are then bolted the second standard film in the free end of standard film, then
Abutment flange, which is bolted, in the free end of the second standard film forms circular steel pile casting.
Preferred embodiment three, as a kind of improvement of basic scheme two, the steel pile casting top is higher than 150~200mm of terrace.
Setting further prevents external sundries, soil or water to be flowed into stake holes in this way.
Preferred embodiment four, as a kind of improvement of basic scheme two, the steel pile casting center line and stake holes centerline deviation
Less than 20mm.The concentricity of setting guarantee steel pile casting and stake holes in this way, avoids steel pile casting deflection from causing the stake of last pouring molding
Base deflection prevents pile incline from influencing the supporting role to building.
Preferred embodiment five, as a kind of improvement of basic scheme two, when the casting breast wall concrete using manually pour,
Hand punning, concrete slump are less than 100mm.Using manually pour, hand punning, convenient for manual control concreting
The degree of packing and the slump prevent from forming the weak spots such as hole in concrete layer, it is ensured that the stability and intensity of hole wall.
The principle of the present invention and advantage are: when practical application, according to the pre-formed several marks of size for the stake that construction needs
Quasi- piece and abutment flange first determine pile foundation position, then excavate stake holes, then assembled standard film and abutment flange form circle in stake holes
The steel retaining wall of tubular, then pour concrete is reinforced between steel retaining wall and the native cliff of stake holes, and steel is finally packed into stake holes
Muscle cage carries out concreting pile.The first standard film, the second standard film and the abutment flange not waited using prefabricated profiled arc length
It is spliced to form steel retaining wall, is directly assembled into prefabricated standard film and abutment flange in stake holes when being spliced into circular steel retaining wall
Steel pile casting, steel retaining wall are transported to scene and assembled can use, and improve construction efficiency, do not have to scene system peace, assembling reinforcement sets up stake
Holes protecting wall, reduces the process of field fabrication reinforcing bar retaining wall frame, no setting is required during the basic borehole steel bar meters field such as reinforcing bar room
Ground is conducive to environmental protection and safety construction, avoids the live artificial reinforcing bar that carries out and binds the foundation construction of operation bring
Dirty, random, poor situation realizes environmental protection and the combination of engineering entity.Standard film and abutment flange are all made of the steel of 10mm thickness
Plate is made, and steel retaining wall is poured concrete between steel retaining wall and stake holes soil cliff again after the completion of setting up, using concrete layer and steel
The dual retaining wall of retaining wall supports stake holes, efficiently solves reinforced concrete core-tube hole quality caused by weak soil property collapse hole and asks
Topic.Standard film and abutment flange can surround cylindric steel shield after using the panel of arc standard film and abutment flange being spliced
Wall, the arc-plane end plate that the setting of two sides up and down inside panel cambered surface matches with panel radian, is arranged on end plate and connects
It connects hole to be convenient for carrying out the positioning fixation and connection between upper and lower two adjacent sections steel retaining wall by end plate and bolt, in panel cambered surface
Vertical planar side plates are arranged in the internal left and right sides, and it is same convenient for being carried out by side plate and bolt that connecting hole is arranged on side plate
Save being located by connecting between standard film and standard film or between standard film and abutment flange on steel retaining wall.Outside standard film panel cambered surface
Feed opening is arranged in the lower end in portion, in this way can be by the feed opening of upper section steel retaining wall between next section steel retaining wall and native stone
Casting concrete carries out the reinforcing of pile lining soil stone in gap.The prefabricated profiled standard film of muti-piece and abutment flange are used when assembled, first
The assembly for carrying out standard film carries out the assembly of abutment flange again, compared to the retaining wall of existing live reinforcing bar binding, uses blocking
Change, modular operation, convenient transportation is easy for installation, does not need to build special reinforced room progress reinforcing bar retaining wall at the construction field (site)
Binding system peace, will not construction site generate reinforcing bar leftover pieces, not need to cut using reinforcing bar at the construction field (site), bend, store up
It the equipment such as deposits, weld, eliminating in ordinary pile foundation operation process using equipment and the waste material of manufacture, noise to resident living area
It seriously affects, noise, fugitive dust, contaminated wastewater of generation of constructing etc. have obtained effective control, and construction efficiency is high, the degree of automation
Height, labour demand is few, and labor intensity is low.Technical solution of the present invention is suitable for Large-diameter Manual Excavation Pile engineering, various depth
Backfill, miscellaneous fill etc. banket geology, the pile foundation construction of the various engineerings such as highway, bridge, building under the conditions of loose geology,
The pile foundation operation that can be used for Unfavorable geology, quicksand geology, rich groundwater geology, efficiently solves reinforced concrete core-tube soft
Hole quality problem caused by soft ground collapse hole.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one；
Fig. 2 is the main view of the first standard film in embodiment one；
Fig. 3 is the top view of the first standard film in embodiment one；
Fig. 4 is the main view of the second standard film in embodiment one；
Fig. 5 is the top view of the second standard film in embodiment one；
Fig. 6 is the main view of abutment flange in embodiment one；
Fig. 7 is the top view of abutment flange in embodiment one.
Specific embodiment
Below by specific embodiment, the present invention is described in further detail:
Appended drawing reference in Figure of description include: panel 1, end plate 2, side plate 3, stiffening plate 4, feed opening 5, connecting hole 6,
Hole for hoist 7, blanking cover 8, the first standard film 9, the second standard film 10, abutment flange 11.
Embodiment is substantially as shown in Fig. 1: Large-diameter Manual Excavation Pile precast splice type steel retaining wall, including five standard films
With a piece of abutment flange 11, as shown in Figure 4 to 7, the standard film and abutment flange 11 include rectangle arc surfaced panel 1, panel 1
Upper/lower terminal inside cambered surface is welded with the arc-plane end plate 2 to match with 1 radian of panel, inside 1 cambered surface of panel
Left and right both ends be welded with vertical planar side plates 3, several connecting holes 6 are equipped on the end plate 2 and side plate 3, even
It connects and is equipped with bolt in hole 6, as shown in Figure 2 and Figure 3, the lower end outside 1 cambered surface of standard film panel is equipped with width 350mm, height
The feed opening 5 of 250mm is welded with a length of 350mm, a height of 250mm, inner wall and panel 1 on the panel 1 in 5 outside of the feed opening
Distance is the rectangle blanking cover 8 of 80mm between arc top, and blanking cover 8 is used and is made with a thickness of the steel plate of 7mm, the bottom of blanking cover 8
It is provided with opening；Be fixed with several stiffening plates 4 being distributed in a crisscross manner inside the cambered surface of the panel 1, lateral stiffening plate 4 with
End plate 2 is parallel, and longitudinally reinforced plate 4 is equipped with hole for hoist 7, and the distance between the center of hole for hoist 7 and end plate 2 are 150mm.Institute
Stating panel 1, end plate 2 and side plate 3 is to be made with a thickness of the steel plate of 10mm, and stiffening plate 4 with a thickness of the steel plate of 12mm by being made.
As shown in Figure 1 to 4, standard film includes the first standard film of three pieces 9 and the second standard film of two panels 10, the first standard film
9 cambered surface outer radius is 1455mm, and a length of 1728mm of cambered surface outer arc, the width of arranged on left and right sides plate 3 is 80mm；Second
The cambered surface outer radius of standard film 10 is 1455mm, a length of 1728mm of cambered surface outer arc, and the width of arranged on left and right sides plate 3 is respectively
80mm and 93mm；The cambered surface outer radius of abutment flange 11 be 1455mm, a length of 482mm of cambered surface outer arc, arranged on left and right sides plate 3
Width is 93mm respectively.The first standard film of three pieces 9 is successively bolted by side plate 3, and the first standard film 9 positioned at both ends is logical
It crosses side plate 3 and is bolted a piece of second standard film 10 respectively, be bolted between two the second standard films 10 by side plate 3 a piece of
Abutment flange 11 forms circular steel retaining wall.
Large-diameter Manual Excavation Pile precast splice type steel panelling construction technique, when practical operation, by the first standard of monolithic
Piece 9, the second standard film 10 and 11 batch of abutment flange are transported to construction site, construction the following steps are included:
One, unwrapping wire fixed pile determines stake position center, using center as the center of circle, adds dado thickness as radius using pile body radius
Draw the circle on top.Gray line is spread as pore digging dimension line.After stake bit line is set, well head makes of M5 cement mortar
300mm high 240mm thickness brick guard ring, to prevent in sundries and surface water inflow hole.Axis, absolute altitude are marked with paint in walling crib,
Construction must just be can be carried out after management supervising engineer checks qualification；
Two, the stake holes earthwork is dug, by manually successively being carried out from top to bottom with pick, spade, hard soil layer is met and boulder hammer, pricker is broken
It is broken that (soft layer is excavated with hoe, and the hard soil layer such as stone is had using the air compressor machine of short handle, pneumatic pick and chisel lapicide to be excavated.
Air compressor machine, pneumatic pick are used for Song Cijian stone；Rock water drilling machine divides the construction of limestone for embedding petrosa).Excavation sequence is first periphery
It is intermediate afterwards, with every 1000mm it is a circulation when excavation, adds twice of dado thickness control to excavate section by design stake diameter；First
Section digs deep about 1500mm, installs retaining wall steel form, unwrapping wire immediately, and centering is hung just, can pour concrete；
Three, supporting steel pile casting, extremely by the lifting of the first standard film of three pieces 9, the second standard film of two panels 10 and a piece of abutment flange 11
In the stake holes dug, when assembled each section steel retaining wall, first determines a piece of first standard film 9, then at left and right sides of it respectively successively
It is bolted a piece of first standard film 9, distinguishes successively spiral shell at left and right sides of it again on the whole what the first standard film of three pieces 9 was formed
It tethers and connects a piece of second standard film 10, a piece of abutment flange 11 is subsequently bolted between two the second standard films 10, formed
One columnar retaining wall unit is higher by terrace 200mm at the top of first segment steel retaining wall；Retaining wall center line and design misalignment of axe
It is not greater than 20mm；
Four, pour breast wall concrete, pile holes protecting wall concrete is every dug after a section should casting concrete immediately, manually pour
It builds, hand punning, the slump controls within 100mm, it is ensured that the stability of hole wall；The concrete Ying Yuding on first segment steel retaining wall top
The brick walling crib top surface in position flushes, and convenient for pilot measurement walling crib control axis and carries out security protection；
Five, second step is repeated to the 4th step, is superimposed multiple retaining wall units vertically until reaching default stake holes depth；It removes
Loosened soil checks soil property situation, and stake bottom should be supported on the supporting course of design defined, and stake bottom can be divided into base expanding and base expanding and two kinds of non-base expanding and base expanding
Situation.First the cylindrical body of base expanding and base expanding position pile body is dug before digging club-footed pile, then by the design size at base expanding and base expanding position, shape from upper and
Under cut soil.
Six, stake position axis and absolute altitude are checked, foundation pit is dug to design socket length and supporting course, according to formation geology feelings
Condition bores sample after tentatively verifying in the hole location and quantity of the specified sampling of management, send laboratory test, acquirement data, which meets, to be set
Count bearing capacity intensity；It must be to pile body diameter, expansion area of bed, bottom hole absolute altitude, stake position middle line, borehole wall verticality, void after pore-forming
Soil thickness is measured comprehensively.
Comparative example, using the reinforced concrete core-tube of traditional field fabrication as object, with the reinforcing bar of traditional field fabrication
The construction data of concrete guard wall is 1 unit, by the present embodiment compared with traditional live reinforced concrete core-tube construction, is led to
It is visible to cross following table:
By comparison as it can be seen that using above-mentioned Large-diameter Manual Excavation Pile precast splice type steel retaining wall and construction technology, steel shield
Ledge is poured concrete between steel retaining wall and stake holes soil cliff again after the completion of setting, using concrete layer and the dual retaining wall of steel retaining wall
Stake holes is supported, efficiently solves the problems, such as reinforced concrete core-tube hole quality caused by weak soil property collapse hole.It is used when assembled
The prefabricated profiled standard film of muti-piece and abutment flange, the assembly of advanced row standard film carries out the assembly of abutment flange again, compared to existing
Live reinforcing bar binding retaining wall, use Briquetting, modular operation, convenient transportation is easy for installation, reduce site operation
Reinforced process, no setting is required during the basic borehole steel bar meters place such as reinforcing bar room will not generate reinforcing bar side in construction site
Corner material does not need the equipment such as to cut at the construction field (site), bend, store, welding using reinforcing bar, and speed of application is fast, reduces artificial
Caisson reinforcing bar panelling construction operation bring security risk.It eliminates in ordinary pile foundation operation process using equipment and manufacture
Waste material, noise seriously affect resident living area, and noise, fugitive dust, contaminated wastewater of generation of constructing etc. have obtained effective control
It makes, operation difficulty reduces under the same scope of application, and construction efficiency greatly improves, more suitable for practical application.
What has been described above is only an embodiment of the present invention, and the common sense such as well known specific structure and/or characteristic are herein in scheme
It does not describe excessively.It should be pointed out that for those skilled in the art, without departing from the structure of the invention, also
Several modifications and improvements can be made, these also should be considered as protection scope of the present invention, these all will not influence of the invention real
The effect and patent practicability applied.The scope of protection required by this application should be based on the content of the claims, specification
In the records such as specific embodiment can be used for explaining the content of claim.
Claims (6)
1. Large-diameter Manual Excavation Pile precast splice type steel retaining wall, which is characterized in that including multiple retaining wall units, each shield
Wall unit includes several standard films and at least one abutment flange, and the standard film and abutment flange include the face of rectangle arc surfaced
Plate, the upper/lower terminal of panel are welded with the end plate of the arc-plane shape to match with panel radian, panel it is left and right
Both ends are welded with vertical planar side plate, are equipped with several connecting holes on the end plate and side plate, in connecting hole
It is equipped with bolt；Several standard films and at least one abutment flange are successively bolted to form columnar retaining wall list by side plate
Member, the lower end outside the standard film panel cambered surface are equipped with feed opening, and the standard film includes the first standard film and the second standard
Piece；Panel on the outside of the feed opening is equipped with blanking cover, and the bottom of blanking cover is provided with opening.
2. Large-diameter Manual Excavation Pile precast splice type steel retaining wall according to claim 1, it is characterised in that: the panel
Cambered surface inside be fixed with several stiffening plates being distributed in a crisscross manner, stiffening plate is equipped with hole for hoist.
3. the construction technology of Large-diameter Manual Excavation Pile precast splice type steel retaining wall as described in claim 1~2 is any, including with
Lower step:
One, unwrapping wire fixed pile, true fixed pile center determine stake holes apical position, the top end diameter etc. of stake holes using center as the center of circle
In the sum of pile body diameter and steel dado thickness；
Two, the stake holes earthwork is dug, is successively excavated from top to bottom from stake holes center to external radiation；
Three, standard film and abutment flange are lifted to side plate is bolted in the stake holes dug and form circle by supporting steel pile casting
Steel pile casting；
Four, breast wall concrete is poured, concrete is poured into the gap between steel pile casting and native stone, passes through the blanking of upper section steel retaining wall
Mouth casting concrete into the gap between next section steel retaining wall and native stone carries out the reinforcing of pile lining soil stone；
Five, stake position axis and absolute altitude are checked；
Six, second step is repeated to the 4th step until reaching default stake holes depth；
Determined in the first step stake holes top end diameter and position after built up in stake holes apical lateral with M5 cement mortar
300mm high 240mm thickness guard ring；First the side plate of multiple first standard films is bolted in third step, then in the first mark
The free end of quasi- piece is bolted the second standard film, then the free end of the second standard film be bolted abutment flange formed it is circular
Steel pile casting.
4. Large-diameter Manual Excavation Pile precast splice type steel panelling construction technique as claimed in claim 3, it is characterised in that: institute
Steel pile casting top is stated higher than 150~200mm of terrace.
5. Large-diameter Manual Excavation Pile precast splice type steel panelling construction technique as claimed in claim 4, it is characterised in that: institute
It states steel pile casting center line and stake holes centerline deviation is less than 20mm.
6. Large-diameter Manual Excavation Pile precast splice type steel panelling construction technique as claimed in claim 5, it is characterised in that: institute
When stating casting breast wall concrete using manually pour, hand punning, concrete slump is less than 100mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611035236.4A CN106703028B (en) | 2016-11-22 | 2016-11-22 | Large-diameter Manual Excavation Pile precast splice type steel retaining wall and its construction technology |
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| CN201611035236.4A CN106703028B (en) | 2016-11-22 | 2016-11-22 | Large-diameter Manual Excavation Pile precast splice type steel retaining wall and its construction technology |
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| CN106703028B true CN106703028B (en) | 2019-07-12 |
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| CN114134822A (en) * | 2021-12-28 | 2022-03-04 | 江西省公路桥梁工程有限公司 | Bridge cast-in-situ bored pile retaining wall structure and construction method thereof |
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