CN117051850A - Convenient construction method for steel sheet pile of deep foundation pit support - Google Patents
Convenient construction method for steel sheet pile of deep foundation pit support Download PDFInfo
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- CN117051850A CN117051850A CN202310822008.5A CN202310822008A CN117051850A CN 117051850 A CN117051850 A CN 117051850A CN 202310822008 A CN202310822008 A CN 202310822008A CN 117051850 A CN117051850 A CN 117051850A
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- steel sheet
- sheet pile
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- foundation pit
- deep foundation
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 101
- 239000010959 steel Substances 0.000 title claims abstract description 101
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 21
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 21
- 239000004571 lime Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 15
- 239000002689 soil Substances 0.000 description 13
- 230000008569 process Effects 0.000 description 5
- 239000004567 concrete Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- 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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (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 discloses a convenient construction method of a steel sheet pile for deep foundation pit support, which comprises the following steps: s1, positioning and paying-off of a pipe ditch to be excavated, and scattering lime powder along the line; s2, placing a steel sheet pile to be driven on the edge of the control line and horizontally arranging the steel sheet pile on the inner side of the lime line, namely, the inner cavity of a pipe trench is required to be excavated, and the steel sheet pile is parallel to the drawn lime powder line; s3, at two ends of two sides of the horizontal steel sheet pile, each side is next to the horizontal steel sheet pile, and 2 steel sheet piles are driven by other steel sheet piles so as to temporarily fix the steel sheet piles to be positioned; s4, performing vertical steel sheet pile construction along the edges of the horizontal steel sheet piles; s5, gradually moving the horizontal steel sheet pile along the direction to be constructed at the position of the length of one steel sheet pile, and repeating the steps. The method can rapidly and accurately finish the construction of the steel sheet pile, and can be adjusted at any time according to the diameters of the top opening of the deep foundation pit and the drainage pipeline.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a convenient construction method of a steel sheet pile for deep foundation pit support.
Background
The deep foundation pit support is a measure for supporting, reinforcing and protecting the side wall of the deep foundation pit and the surrounding environment of the foundation pit in order to ensure the safety of the underground structure construction and the surrounding environment of the foundation pit.
The common supporting method for deep foundation pit supporting comprises the following steps: 1. and arranging concrete filling piles around the foundation pit before excavation, wherein the piles are arranged at intervals, in double rows and continuously, and concrete connecting beams or anchor piles and pull rods are arranged at the tops of the piles. The construction is convenient, the safety is good, and the cost is low; 2. the soil nail wall is supported, natural soil is provided with soil nails (also called mortar anchor rods) through drilling holes, dowel bars and grouting and is combined with the injection concrete panel to form the soil nail wall similar to a gravity retaining wall so as to resist the soil pressure behind the wall and keep the stability of an excavated surface. The method is also called anchor net spraying reinforcement slope or anchor net spraying retaining wall; 3. the anchor bolt support is suitable for excavating a larger and deeper foundation pit in a harder soil layer or broken rock, and is adopted when the slope stability is required to be ensured when a building is adjacent; 4. the soil retaining bored concrete pile and the soil layer anchor rod are combined for supporting, the pile top is not provided with anchor piles and pull rods, but is dug to a certain depth, the anchor rods are driven into the back of the pile at intervals of a certain distance in an inclined manner, after the pile is strong, transverse struts are arranged, the pile is tensioned and fixed, soil is dug in the middle of the pile until the designed depth is suitable for a large deeper foundation pit, the construction period is long, the support is not allowed, and the foundation is not allowed to sink; 5. when the foundation pit is deeper, the groundwater level is higher and precipitation is not constructed, the steel sheet piles are adopted as supporting structures, so that the soil can be kept off, the water can be prevented, and the occurrence of sand flow can be prevented. Sheet pile supports can be divided into anchor-free sheet piles (cantilever sheet piles) and anchor sheet piles. The commonly used steel sheet pile is a U-shaped steel sheet pile, which is also called Lasen steel sheet pile; 6. the underground diaphragm wall is supported, the reinforced concrete underground diaphragm wall is firstly built, and mechanical excavation is carried out between the walls after the strength is achieved. The support method has high rigidity and strength, can retain soil, bear load, intercept water and resist seepage, can be used for construction in narrow places, and is suitable for construction of deep foundation pits with large area and underground water; 7. when the depth of the foundation pit is large, the strength and deformation of the cantilever retaining wall cannot meet the requirements, and the reliability of anchoring outside the pit is low, the inner support can be adopted in the pit. The novel foundation soil layer is suitable for various foundation soil layers, and has the defect that the inner support occupies a certain construction space. The steel pipe internal support and the reinforced concrete frame internal support are commonly used.
The construction accidents of deep foundation pit engineering frequently occur, and once the accidents occur, the accidents are extremely easy to cause group death and group injury, the consequences are quite serious, and the reasons are mainly that various safety pre-control measures are not in place in the construction scheme and the construction process. According to the national relevant regulation requirements, the deep foundation pit engineering construction must be compiled into supervision rules, and the technical requirements of the deep foundation pit engineering and the inspection points of the construction site are defined.
Disclosure of Invention
The invention aims to provide a convenient construction method of a steel sheet pile for supporting a deep foundation pit, which can rapidly and accurately finish the construction of the steel sheet pile and can be adjusted at any time according to the pipe diameters of a top opening and a drainage pipeline of the deep foundation pit.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a convenient construction method of a steel sheet pile for deep foundation pit support comprises the following steps:
s1, positioning and paying-off of a pipe ditch to be excavated, and scattering lime powder along the line;
s2, placing a steel sheet pile to be driven on the edge of the control line and horizontally arranging the steel sheet pile on the inner side of the lime line, namely, the inner cavity of a pipe trench is required to be excavated, and the steel sheet pile is parallel to the drawn lime powder line;
s3, at two ends of two sides of the horizontal steel sheet pile, each side is next to the horizontal steel sheet pile, and 2 steel sheet piles are driven by other steel sheet piles so as to temporarily fix the steel sheet piles to be positioned;
s4, performing vertical steel sheet pile construction along the edges of the horizontal steel sheet piles;
s5, gradually moving the horizontal steel sheet pile along the direction to be constructed at the position of the length of one steel sheet pile, and repeating the steps.
Preferably, in step S1, the positioning and paying-off of the trench to be excavated is performed by using a total station or a JPS positioning instrument.
Preferably, step S1 specifically includes: and (3) fixing a point in the length range of about 20 meters, and drawing a line between the two points by 5-10m, scattering lime powder along the line, and marking the position of the steel sheet pile to be driven on the ground.
Preferably, before step S1, the method further includes: and (5) according to the elevation of the field excavated pipe ditch, slope releasing and site leveling are carried out.
Preferably, a convenient construction method of a steel sheet pile for deep foundation pit support comprises the following steps:
firstly, carrying out slope releasing and site leveling according to elevation of a field excavated pipe ditch;
secondly, positioning and paying off the pipe ditch to be excavated by using a total station (or a JPS positioning instrument), namely, positioning the pipe ditch in a length range of about 20 meters (a point can be fixed by 5 to 10 meters), drawing a line (or a nylon rope) between the two points, scattering lime powder along the line, and marking the position of the steel sheet pile to be excavated on the ground;
thirdly, placing a steel sheet pile (steel sheet pile a-an) to be driven on the edge of the control line, lying on the inner side of the lime line (the inner cavity of a pipe ditch is required to be excavated), and parallel to the drawn lime powder line;
fourthly, driving 2 steel sheet piles with other steel sheet piles at two ends of two sides of the lying steel sheet pile, wherein each side is next to the lying steel sheet pile, so as to temporarily fix the steel sheet piles for positioning;
fifthly, performing vertical steel sheet pile construction along the edge of the lying steel sheet pile;
step six, gradually moving the lying steel sheet pile along the direction to be constructed at the position of the length (range) of one steel sheet pile, and repeating the steps.
Compared with the prior art, the invention has the beneficial effects and remarkable progress that: the convenient construction method of the steel sheet pile for supporting the deep foundation pit can effectively control the size of the inner cavity of a pipe ditch (foundation pit) to be excavated, so that the steel sheet pile to be excavated is quite straight; the lying steel sheet pile plays a role in positioning, so that the positioning can be quickly and accurately performed in the construction process, the construction speed is high, and the operation efficiency is high; the internal support construction speed can be greatly accelerated, unnecessary labor and mechanical cost can be saved, and larger production benefit can be generated.
Drawings
FIG. 1 is a construction effect diagram of a convenient construction method of a steel sheet pile for deep foundation pit support;
FIG. 2 is a schematic view of a portion of a method of the present invention for the convenient construction of steel sheet piles for deep foundation pit support;
in the figure: 1. horizontal steel sheet piles; 2. vertical steel sheet piles; 3. an inner cavity;
Detailed Description
In order to make the objects, technical solutions, beneficial effects and significant improvements of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings provided in the embodiments of the present invention.
It is apparent that all of the described embodiments are only some, but not all, embodiments of the invention; all other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that the terms "first," "second," and "third" (if any) in the description and claims of the present invention and the drawings of the embodiments of the present invention are used merely for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise," "include," and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.
It is to be understood that:
in the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected or movably connected, or integrally formed; either directly, indirectly, through intermediaries, or through an intangible signal connection, or even optically, in communication with one another, or in interaction with one another, unless expressly defined otherwise.
The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
It should also be noted that the following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.
The following describes the technical scheme of the present invention in detail by using specific examples.
Example 1
As shown in fig. 1-2, a convenient construction method for a steel sheet pile of a deep foundation pit support comprises the following steps:
s1, positioning and paying-off of a pipe ditch to be excavated, and scattering lime powder along the line;
s2, placing a steel sheet pile to be driven on the edge of the control line and horizontally arranging the steel sheet pile on the inner side of the lime line, namely, the inner cavity 3 of the pipe trench is required to be excavated and is parallel to the line of the drawn lime powder;
s3, at two ends of two sides of the horizontal steel sheet pile 1, each side is next to the horizontal steel sheet pile 1, and 2 steel sheet piles are driven by other steel sheet piles so as to temporarily fix the steel sheet piles to be positioned;
s4, performing vertical steel sheet pile 2 driving along the edge of the horizontal steel sheet pile 1;
s5, gradually moving the horizontal steel sheet pile 1 along the direction to be constructed at the position of the length of one steel sheet pile, and repeating the steps.
In this embodiment, in step S1, the positioning and paying-off of the trench to be excavated is performed by using a total station or a JPS positioning instrument.
In this embodiment, step S1 specifically includes: and (3) fixing a point in the length range of about 20 meters, and drawing a line between the two points by 5-10m, scattering lime powder along the line, and marking the position of the steel sheet pile to be driven on the ground.
In this embodiment, before step S1, the method further includes: and (5) according to the elevation of the field excavated pipe ditch, slope releasing and site leveling are carried out.
In this embodiment, a method for conveniently constructing a steel sheet pile for deep foundation pit support includes the following steps:
firstly, carrying out slope releasing and site leveling according to elevation of a field excavated pipe ditch;
secondly, positioning and paying off the pipe ditch to be excavated by using a total station (or a JPS positioning instrument), namely, positioning the pipe ditch in a length range of about 20 meters (a point can be fixed by 5 to 10 meters), drawing a line (or a nylon rope) between the two points, scattering lime powder along the line, and marking the position of the steel sheet pile to be excavated on the ground;
thirdly, placing a steel sheet pile (shown in fig. 2, steel sheet piles 1-5) to be driven on the edge of the control line, lying on the inner side of the lime line (the inner cavity of a pipe ditch is required to be excavated), and parallel to the drawn lime powder line;
fourthly, driving 2 steel sheet piles with other steel sheet piles at two ends of two sides of the lying steel sheet pile, wherein each side is next to the lying steel sheet pile, so as to temporarily fix the steel sheet piles for positioning;
fifthly, performing vertical steel sheet pile construction along the edge of the lying steel sheet pile;
step six, gradually moving the lying steel sheet pile along the direction to be constructed at the position of the length (range) of one steel sheet pile, and repeating the steps.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. The convenient construction method of the steel sheet pile for supporting the deep foundation pit is characterized by comprising the following steps of:
s1, positioning and paying-off of a pipe ditch to be excavated, and scattering lime powder along the line;
s2, placing a steel sheet pile to be driven on the edge of the control line and horizontally arranging the steel sheet pile on the inner side of the lime line, namely, the inner cavity of a pipe trench is required to be excavated, and the steel sheet pile is parallel to the drawn lime powder line;
s3, at two ends of two sides of the horizontal steel sheet pile, each side is next to the horizontal steel sheet pile, and 2 steel sheet piles are driven by other steel sheet piles so as to temporarily fix the steel sheet piles to be positioned;
s4, performing vertical steel sheet pile construction along the edges of the horizontal steel sheet piles;
s5, gradually moving the horizontal steel sheet pile along the direction to be constructed at the position of the length of one steel sheet pile, and repeating the steps.
2. The method for conveniently constructing the steel sheet pile for deep foundation pit support according to claim 1, wherein in the step S1, positioning and paying-off of a trench to be excavated is performed by a total station or a JPS positioning instrument.
3. The method for conveniently constructing the steel sheet pile for deep foundation pit support according to claim 2, wherein the step S1 specifically comprises: and (3) fixing a point in the length range of about 20 meters, and drawing a line between the two points by 5-10m, scattering lime powder along the line, and marking the position of the steel sheet pile to be driven on the ground.
4. The method for conveniently constructing the steel sheet pile for deep foundation pit support according to claim 1, wherein the step S1 is preceded by the following steps: and (5) according to the elevation of the field excavated pipe ditch, slope releasing and site leveling are carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310822008.5A CN117051850A (en) | 2023-07-06 | 2023-07-06 | Convenient construction method for steel sheet pile of deep foundation pit support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310822008.5A CN117051850A (en) | 2023-07-06 | 2023-07-06 | Convenient construction method for steel sheet pile of deep foundation pit support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117051850A true CN117051850A (en) | 2023-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310822008.5A Pending CN117051850A (en) | 2023-07-06 | 2023-07-06 | Convenient construction method for steel sheet pile of deep foundation pit support |
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| Country | Link |
|---|---|
| CN (1) | CN117051850A (en) |
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2023
- 2023-07-06 CN CN202310822008.5A patent/CN117051850A/en active Pending
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