CN110904950A - Steel structure retaining wall of anti-slide pile and construction method thereof - Google Patents
Steel structure retaining wall of anti-slide pile and construction method thereof Download PDFInfo
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- CN110904950A CN110904950A CN201911317985.XA CN201911317985A CN110904950A CN 110904950 A CN110904950 A CN 110904950A CN 201911317985 A CN201911317985 A CN 201911317985A CN 110904950 A CN110904950 A CN 110904950A
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- steel
- retaining wall
- steel structure
- pile
- slide
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 129
- 239000010959 steel Substances 0.000 title claims abstract description 129
- 238000010276 construction Methods 0.000 title claims abstract description 39
- 239000002689 soil Substances 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims description 23
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 13
- 238000009412 basement excavation Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000011229 interlayer Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 description 20
- 238000004364 calculation method Methods 0.000 description 4
- 239000004567 concrete Substances 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
-
- 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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
- E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
-
- 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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
- E02D5/08—Locking forms; Edge joints; Pile crossings; Branch pieces
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention provides a steel structure retaining wall of an anti-slide pile and a construction method thereof, and the steel structure retaining wall is characterized by comprising a plurality of sections of retaining walls, wherein each retaining wall is a shell structure which is formed by fixedly connecting four steel structures end to end and is provided with an upper opening and a lower opening; the outer wall of the retaining wall is tightly attached to the soil around the anti-slide pile; and adjacent protecting walls are fixedly connected. The invention can save about 87.5% of construction period.
Description
Technical Field
The invention relates to the technical field of bank slope protection, in particular to a steel structure retaining wall of an anti-slide pile and a calculation method and a construction method thereof.
Background
The anti-slide pile is used as a reinforced concrete retaining structure, and has the advantages of large soil pressure bearing capacity, strong structural stability and small occupied area, so that the anti-slide pile is widely applied to side slope and landslide support. However, the construction of the slide-resistant pile needs the cooperation of the retaining wall, the traditional retaining wall is of a cast-in-place reinforced concrete structure, the construction is carried out by adopting a reverse method, and one section of support is required to be excavated (the depth of each section is generally 1 m). The protective wall is bound with steel bars, supported by a vertical mold, and then poured and vibrated with concrete. This section dado template and support need can support dado structure at dado concrete intensity and indeformable rear detachable, and lower section dado needs to reach the design requirement after this section dado intensity, just can go on. The average time consumption of each section of the retaining wall is about 7 days, so that the construction time of the slide-resistant pile is long, and the construction period is seriously influenced.
Disclosure of Invention
The invention aims to provide a steel structure retaining wall of an anti-slide pile and a construction method thereof aiming at the defects of the prior art, which are suitable for different soil conditions and excavation depths and can save about 87.5 percent of construction period.
The invention provides a steel structure retaining wall of an anti-slide pile, which is characterized by comprising a plurality of sections of retaining walls, wherein each retaining wall is a shell structure which is formed by fixedly connecting four steel structures end to end and is provided with an upper opening and a lower opening; the outer wall of the retaining wall is tightly attached to the soil around the anti-slide pile; and adjacent protecting walls are fixedly connected.
In the technical scheme, the outer surface of the bottom of the protective wall is provided with positioning steel bars extending downwards; the top of the retaining wall is provided with a positioning reinforcing steel bar groove; between two adjacent protecting walls, the positioning reinforcing steel bar of the protecting wall at the upper side is clamped in the positioning reinforcing steel bar groove of the protecting wall at the lower side.
Among the above-mentioned technical scheme, the dado includes the first steel construction of two relative settings and the second steel construction of two relative settings, and two second steel constructions set up between two first steel constructions, and the tip of first steel construction all sets up in the outside of second steel construction.
In the above technical scheme, the first steel structure and the second steel structure are steel plates.
Among the above-mentioned technical scheme, first steel construction and second steel construction shape are the same, including relative outer steel sheet and the inlayer steel sheet that sets up, the welding has the floor between the layer that a plurality of equidistance distributes between outer steel sheet and the inlayer steel sheet.
In the technical scheme, the top end of the protective wall of the uppermost section is not less than 20cm higher than the platform surface.
In the technical scheme, the relative distance between the two first steel structure inner walls and the relative distance between the two second steel structure inner walls are respectively the sum of the size of the corresponding anti-slide pile body and the maximum deflection of the 2 times of the retaining wall.
In the technical scheme, the first steel structure, the second steel structure and the two adjacent protective walls are fixed by welding, the welding seam is not lower than a secondary standard, and a common T-shaped connected right-angle welding seam is adopted; and reserving a 20mm welding seam position outside the joint of the first steel structure and the second steel structure.
In the technical scheme, the positioning steel bars are phi 30 HPB300 steel bars and are welded on the outer side of the second steel structure; the positioning reinforcing steel bar groove can be processed by a round pipe, and the inner diameter of the round pipe is 32 mm.
The invention provides a construction method of a steel structure retaining wall of an anti-slide pile, which is characterized by comprising the following steps of:
a. the steel structure of the retaining wall is manufactured according to the requirements of the thickness, the interval, the size of a welding line, a detailed structure diagram and the like of the steel plate which are required by design;
b. the method comprises the following steps of (1) completing the assembly of a single retaining wall before the excavation of the pile position of the slide-resistant pile;
c. after the pile position of the anti-slide pile is excavated to the depth of one section of the retaining wall, pressing the positioned and welded retaining wall into the pile position by using a machine;
d. after the pile position of the anti-slide pile is excavated continuously and the depth of the next section of the protecting wall is finished, connecting the protecting wall embedded with soil and the next section of protecting wall at the ground hole, and pressing the positioned and welded protecting wall on the surface of the platform into the ground hole by using a machine;
e. and d, repeating the step d until the pile position of the slide-resistant pile is constructed.
Compared with the traditional concrete supporting structure, the concrete anti-skid pile is formed before construction, so that the working time for waiting for the forming of the supporting structure is not needed, and the construction time of the anti-skid pile is effectively saved. Meanwhile, the invention provides various structures of the retaining wall, and the retaining wall is suitable for different soil conditions and excavation depths. The construction method can be used for synchronous construction along with the construction process of the pile position of the slide-resistant pile, the requirement of maintenance for seven days is not required in the aspect of supporting strength, and the next layer can be immediately excavated after the hoisting is finished; meanwhile, the invention can be prefabricated, construction is not needed after the site excavation is finished, and the construction site can be directly hoisted, so that the construction period can be saved by about 87.5 percent.
Drawings
FIG. 1 is a plan view of a protective wall 1-1 of the I-shaped steel structure of the present invention
FIG. 2 is a schematic view of the area of FIG. 1A
FIG. 3 is a sectional view of the I-shaped steel structure of the present invention
FIG. 4 is a top view of the II-type steel structure of the present invention
FIG. 5 is a diagrammatic representation of the outline of FIG. 4A
FIG. 6 is a sectional view of the II-type steel structure retaining wall 1-1 of the present invention
FIG. 7 is a sectional view of the bulkhead 2-2 of the II-type steel structure
FIG. 8 is a schematic view of the construction sequence of the present invention
The steel structure comprises 1-retaining walls, 2-anti-slide piles, 3-positioning steel bars, 4-positioning steel bar grooves, 5-outer steel plates, 6-inner steel plates, 7-interlayer rib plates, 11-first steel structures and 12-second steel structures.
Detailed Description
The invention will be further described in detail with reference to the following drawings and specific examples, which are not intended to limit the invention, but are for clear understanding.
As shown in fig. 1, the invention provides a steel structure retaining wall of an anti-slide pile, which is characterized by comprising a plurality of sections of retaining walls 1, wherein the retaining walls 1 are shell structures with upper and lower openings formed by fixedly connecting four steel structures end to end, the plurality of sections of retaining walls 1 are coaxially sleeved outside an anti-slide pile 2 to be supported from bottom to top, and the inner wall of each retaining wall 1 is tightly attached to the outer wall of the anti-slide pile 2 to support the anti-slide pile 2; the outer wall of the retaining wall 1 is tightly attached to the soil around the anti-slide pile 2; the adjacent protecting walls 1 are fixedly connected.
In the technical scheme, the outer surface of the bottom of the protective wall 1 is provided with a positioning steel bar 3 extending downwards; the top of the retaining wall 1 is provided with a positioning reinforcing steel bar groove 4; between two adjacent retaining walls 1, the positioning reinforcing steel bar 3 of the retaining wall 1 on the upper side is clamped in the positioning reinforcing steel bar groove 4 of the retaining wall 1 on the lower side. In the construction process, the adjacent retaining walls 1 can be effectively positioned through the positioning steel bars 3 and the positioning steel bar grooves 4, and the stability and the rapidness of installation are guaranteed.
Among the above-mentioned technical scheme, dado 1 includes the second steel construction 12 of two relative first steel construction 11 that set up and two relative settings, and two second steel constructions 12 set up between two first steel constructions 11, and the tip of first steel construction 11 all sets up in the outside of second steel construction 12.
As shown in fig. 1, the present invention comprises a structural dado 1 of i-section steel. The protective wall 1 is made of Q235 steel plates, and the whole structure is formed by welding four steel plates. In order to improve the lateral pressure bearing capacity of the welding part. Wherein L1 and L2 are the pile body size of the slide- resistant pile 2 and 2 times of the maximum deflection of the retaining wall 1, and h is the thickness of a steel plate. Each section of the protective wall is 1m high, the outer sides of the upper and lower sections of the protective wall 1 are connected by positioning steel bars 3 and positioning steel bar grooves 4, and the positioning steel bars 3 are welded after being connected. The steel plate connection adopts a welding process, the seam is not lower than a secondary standard, and a common T-shaped connection right angle welding seam is adopted. A 20mm weld seam location was reserved in the outside weld position as shown in figure 2. The positioning steel bars 3 are made of phi 30 HPB300 steel bars and welded to the outer sides of the short sides of the retaining wall 1, and the edge distance is 10cm, as shown in figure 3. The positioning reinforcing steel bar groove 4 can be processed by a round pipe, and the inner diameter of the round pipe is 32 mm. It should be noted that the positioning steel bars 3 only perform positioning and connecting functions, and do not participate in calculation of lateral resistance and the like.
As shown in figure 4, the wall comprises a II-type steel structure protective wall 1, wherein the steel structure comprises an outer steel plate 5 and an inner steel plate 6 which are oppositely arranged, and a plurality of interlayer rib plates 7 which are distributed at equal intervals are welded between the outer steel plate 5 and the inner steel plate 6. Wherein L1 and L2 are the pile body size of the slide-resistant pile 2 +2 times of the maximum deflection of the retaining wall 1, and b is the structural thickness of the retaining wall 1. The height of each section of protective wall is 1m, the outer sides of the upper and lower sections of protective walls 1 are connected by positioning steel bars 3 and positioning steel bar grooves 4, and the inner sides of the steel plates are welded after the positioning steel bars 3 are connected. The steel plate connection adopts a welding process, the welding seam is not lower than the secondary standard, and the common type right-angle welding seam of T-shaped connection is adopted. A 20mm weld seam location was reserved in the outside weld position as shown in fig. 5. The positioning steel bars 3 are made of phi 30 HPB300 steel bars, and are welded with the outer sides of the short sides of the protective wall 1, and the edge distance is 10cm, as shown in figures 4 and 6. The positioning reinforcing steel bar groove 4 can be processed by a round pipe, and the inner diameter of the round pipe is 32 mm. It should be noted that the positioning steel bars 3 only perform positioning and connecting functions, and do not participate in calculation of lateral resistance and the like. The positional relationship between the steel plates and the rib plates is shown in fig. 6, and the inter-layer rib plate spacing is a, and the arrangement is made at equal intervals. In fig. 7, the structural thickness b of the retaining wall 1, the space a of the rib plates between the layers, the thicknesses of the inner and outer steel plates 5 and the thickness of the rib plates are only shown schematically, and the specific thicknesses need to be determined by calculation.
In the technical scheme, the top end of the protective wall 1 at the uppermost section is higher than the platform surface by not less than 20cm, so that the influence of surface water and particles entering the hole on construction safety is prevented.
As shown in fig. 8, the invention provides a construction method of a steel structure retaining wall of an anti-slide pile, which comprises the following steps:
a. the steel structure of the retaining wall 1 is manufactured according to the requirements of the steel plate thickness, the spacing, the welding seam size, the detailed structure diagram and the like which are strictly required by design;
b. the assembly of the single protecting wall 1 is completed before the excavation of the pile position of the slide-resistant pile 2; the welding seam adopts a common type right-angle welding seam with T-shaped connection of the welding seam, which is not lower than a secondary standard, and a welding seam position of 20mm is reserved at the welding position at the outer side;
c. after the pile position of the anti-slide pile 2 is excavated to the depth of one section of the retaining wall 1, pressing the positioned and welded No. 1 retaining wall 1 into the excavation depth by using a machine;
d. after the pile position of the anti-slide pile 2 is excavated continuously and the depth of the next protective wall 1 is finished, connecting the protective wall 1 embedded with soil and the next protective wall 1 (No. 2 protective wall 1) at the ground hole, and pressing the positioned and welded protective wall 1 (No. 2 protective wall 1) on the surface of the platform into the ground hole mechanically;
e. and d, repeating the step d until the pile position of the slide-resistant pile 2 is constructed.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (10)
1. The steel structure retaining wall for the anti-slide pile is characterized by comprising a plurality of sections of retaining walls, wherein each retaining wall is a shell structure which is formed by fixedly connecting four steel structures end to end and is provided with an upper opening and a lower opening; the outer wall of the retaining wall is tightly attached to the soil around the anti-slide pile; and adjacent protecting walls are fixedly connected.
2. The slide-resistant pile steel structure retaining wall of claim 1, wherein the bottom outer surface of the retaining wall is provided with positioning steel bars extending downwards; the top of the retaining wall is provided with a positioning reinforcing steel bar groove; between two adjacent protecting walls, the positioning reinforcing steel bar of the protecting wall at the upper side is clamped in the positioning reinforcing steel bar groove of the protecting wall at the lower side.
3. The slide-resistant pile steel structure dado of claim 2, characterized in that the dado includes two first steel structures arranged oppositely and two second steel structures arranged oppositely, the two second steel structures are arranged between the two first steel structures, the ends of the first steel structures are arranged outside the second steel structures.
4. The slide-resistant pile steel structure retaining wall as claimed in claim 3, characterized in that the first steel structure and the second steel structure are steel plates.
5. The slide-resistant pile steel structure dado of claim 3, characterized in that the first steel structure and the second steel structure are the same in shape and comprise an outer steel plate and an inner steel plate which are oppositely arranged, and a plurality of interlayer rib plates which are equidistantly and parallelly distributed from top to bottom are welded between the outer steel plate and the inner steel plate.
6. The slide-resistant pile steel structure retaining wall of claim 3, wherein the top end of the retaining wall of the uppermost section is not less than 20cm higher than the platform surface.
7. The slide-resistant pile steel structure retaining wall of claim 3, characterized in that the relative distance between two first steel structure inner walls and the relative distance between two second steel structure inner walls are the sum of the pile body size of the slide-resistant pile and the maximum deflection of the retaining wall of 2 times.
8. The slide-resistant pile steel structure retaining wall as claimed in claim 4 or 5, wherein the first steel structure and the second steel structure and the two adjacent retaining walls are fixed by welding, the welding seam is not lower than a secondary standard, and a common type straight fillet weld of T-shaped connection is adopted; and reserving a 20mm welding seam position outside the joint of the first steel structure and the second steel structure.
9. The slide-resistant pile steel structure retaining wall of claim 3, wherein the positioning steel bars are made of phi 30 HPB300 steel bars and welded on the outer side of the second steel structure; the positioning reinforcing steel bar groove can be processed by a round pipe, and the inner diameter of the round pipe is 32 mm.
10. The construction method of the slide-resistant pile steel structure retaining wall according to claim 3, characterized by comprising the following steps:
a. the steel structure of the retaining wall is manufactured according to the requirements of the thickness, the interval, the size of a welding line, a detailed structure diagram and the like of the steel plate which are required by design;
b. the method comprises the following steps of (1) completing the assembly of a single retaining wall before the excavation of the pile position of the slide-resistant pile;
c. after the pile position of the anti-slide pile is excavated to the depth of one section of the retaining wall, pressing the positioned and welded retaining wall into the pile position by using a machine;
d. after the pile position of the anti-slide pile is excavated continuously and the depth of the next section of the protecting wall is finished, connecting the protecting wall embedded with soil and the next section of protecting wall at the ground hole, and pressing the positioned and welded protecting wall on the surface of the platform into the ground hole by using a machine;
e. and d, repeating the step d until the pile position of the slide-resistant pile is constructed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911317985.XA CN110904950A (en) | 2019-12-19 | 2019-12-19 | Steel structure retaining wall of anti-slide pile and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911317985.XA CN110904950A (en) | 2019-12-19 | 2019-12-19 | Steel structure retaining wall of anti-slide pile and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110904950A true CN110904950A (en) | 2020-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911317985.XA Pending CN110904950A (en) | 2019-12-19 | 2019-12-19 | Steel structure retaining wall of anti-slide pile and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775590A (en) * | 2022-03-28 | 2022-07-22 | 中铁二院贵阳勘察设计研究院有限责任公司 | Fore shaft guard arm structure with function of protecting slide-resistant pile construction and construction method of fore shaft guard arm structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0952236A (en) * | 1995-08-11 | 1997-02-25 | Yukio Yoshikawa | Covering method for structure |
| CN2359332Y (en) * | 1998-12-29 | 2000-01-19 | 马光耀 | Man-made digging pile mould-pipe |
| CN201704688U (en) * | 2010-03-01 | 2011-01-12 | 华东建筑设计研究院有限公司 | Double sleeve for cast-in-situ bored pile capable of isolating pile-earth contact |
| CN206428690U (en) * | 2016-12-19 | 2017-08-22 | 湖南工程学院 | Assembly type steel plate breast wall apparatus for artificial digging pile |
| CN207700185U (en) * | 2017-12-04 | 2018-08-07 | 辽河石油勘探局 | A kind of retaining wall device for manual hole digging pile |
| CN110438988A (en) * | 2019-08-14 | 2019-11-12 | 中铁二院工程集团有限责任公司 | A kind of prefabricated bulkhead and pore digging method |
| CN212001048U (en) * | 2019-12-19 | 2020-11-24 | 中交第二公路勘察设计研究院有限公司 | Steel structure retaining wall of anti-slide pile |
-
2019
- 2019-12-19 CN CN201911317985.XA patent/CN110904950A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0952236A (en) * | 1995-08-11 | 1997-02-25 | Yukio Yoshikawa | Covering method for structure |
| CN2359332Y (en) * | 1998-12-29 | 2000-01-19 | 马光耀 | Man-made digging pile mould-pipe |
| CN201704688U (en) * | 2010-03-01 | 2011-01-12 | 华东建筑设计研究院有限公司 | Double sleeve for cast-in-situ bored pile capable of isolating pile-earth contact |
| CN206428690U (en) * | 2016-12-19 | 2017-08-22 | 湖南工程学院 | Assembly type steel plate breast wall apparatus for artificial digging pile |
| CN207700185U (en) * | 2017-12-04 | 2018-08-07 | 辽河石油勘探局 | A kind of retaining wall device for manual hole digging pile |
| CN110438988A (en) * | 2019-08-14 | 2019-11-12 | 中铁二院工程集团有限责任公司 | A kind of prefabricated bulkhead and pore digging method |
| CN212001048U (en) * | 2019-12-19 | 2020-11-24 | 中交第二公路勘察设计研究院有限公司 | Steel structure retaining wall of anti-slide pile |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114775590A (en) * | 2022-03-28 | 2022-07-22 | 中铁二院贵阳勘察设计研究院有限责任公司 | Fore shaft guard arm structure with function of protecting slide-resistant pile construction and construction method of fore shaft guard arm structure |
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