CN217325391U - Construction tool for high-speed rail line deep foundation pit secant pile - Google Patents
Construction tool for high-speed rail line deep foundation pit secant pile Download PDFInfo
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- CN217325391U CN217325391U CN202220400903.9U CN202220400903U CN217325391U CN 217325391 U CN217325391 U CN 217325391U CN 202220400903 U CN202220400903 U CN 202220400903U CN 217325391 U CN217325391 U CN 217325391U
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Abstract
The utility model discloses a face construction frock of high-speed railway circuit deep basal pit secant pile, including fore shaft device, the fore shaft device includes interior extension board and arc, and the both ends of interior extension board are connected with the both ends of arc respectively, form sealed interlock connection space between interior extension board and the arc. The utility model has the advantages that: the structural connection can be effectively reinforced, the deformation resistance is improved, and the integrity is enhanced; the capability of the whole structure for resisting soil and water loads outside the pit and the whole anti-permeability performance can be improved to a great extent; the concrete excavated at the occlusion part in the prior art is reduced, and the material and the corresponding consumption of the manual machine are saved.
Description
Technical Field
The utility model belongs to the technical field of the construction, specifically be in the construction of high-speed railway line deep basal pit support and stagnant water curtain, a construction frock of high-speed railway line deep basal pit secant pile is close.
Background
In recent years, with the development of urbanization progress, the reasonable development and utilization of land resources near high-speed rail lines are the requirement of urban sustainable development, the phenomenon that the construction project site selection in urban areas is close to the high-speed rail lines is more frequent, and more deep foundation pit projects near the high-speed rail lines appear. In order to ensure the operation safety of the high-speed railway, related national regulations definitely stipulate that the underground water is forbidden to be pumped within 200 meters from the slope toe of the embankment of the high-speed railway, the slope top of the cutting or the outer side of the railway bridge to the outside, so that the deep foundation pit engineering of the high-speed railway faces more challenges.
At present, in deep foundation pit supporting and waterproof curtain engineering, a concrete secant pile is selected more, an anchor rope is used for reinforcing the concrete secant pile, and the concrete secant pile is used as a supporting pile mainly stressed in a structural form, so that the excavation safety of the foundation pit is protected; a plain concrete pile without reinforcing bars (hereinafter referred to as plain concrete pile) is adopted between the two supporting piles to be occluded and embedded with the pile bodies of the supporting piles at two sides. Because the concrete self intensity is high and the water intercepting effect is better, so under the combined action of the support pile and the plain concrete pile, the better integral water stopping effect can be achieved. The concrete construction sequence is that concrete of plain concrete pile is poured first, and after the concrete is initially solidified, the hole-forming operation of supporting pile is carried out. The operation of the step needs to dig out the pile body part connected with the plain concrete pile and the support pile, and after the reinforcement cage of the support pile is lifted in place, the pile body concrete of the support pile is poured, so that the occlusion effect of the support pile and the plain concrete pile is achieved.
The process mainly depends on the occlusion connection of the concrete pile body, and the occlusion force is limited. Under the condition that underground water is not allowed to be pumped close to the high-speed rail, the foundation pit support bears the extremely large water-soil lateral pressure outside the pit, the deep foundation pit construction is extremely unfavorable, and the process safety is low under the condition of the high-speed rail.
In addition, the process consumes a large amount of concrete at the occlusion part of the original concrete pile and the supporting pile, and the part needs to be dug out later, thereby causing a large amount of material waste and consuming a large amount of labor hour, and the associated work of mechanical machine shifts for digging out, cleaning and transporting. The efficiency of excavating the concrete of the occlusion part is slower than that of excavating the common soil body, and the loss of construction machinery is increased. The workload of digging and transporting is large, and the discharge amount of machinery and vehicles is increased correspondingly. Overall, the comprehensive cost is higher, and efficiency is lower, and the time limit for a project is longer and be unfavorable for work such as energy-concerving and environment-protective.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the utility model provides a be close to construction frock of high-speed railway circuit deep basal pit secant pile has solved the problem that current secant pile construction is troublesome and laboursome. The utility model discloses combine deep basal pit to strut and stagnant water curtain construction characteristics, design interlock pile construction method can effectively strengthen the excavation supporting wholeness to can save materials such as concrete in a large number and consume and corresponding artifical machinery consumes. Further improve the whole quality and the stagnant water effect of deep basal pit support. The workload of digging and transporting is greatly reduced, the work efficiency is improved, and the comprehensive cost is effectively reduced.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a face construction frock of high-speed railway circuit deep basal pit secant pile, includes fore shaft device, and the fore shaft device includes interior extension board and arc, and the both ends of interior extension board are connected with the both ends of arc respectively, forms sealed interlock connection space between interior extension board and the arc.
Further, the arc length of the arc-shaped plate is larger than that of the overlapped part of the pile holes.
Furthermore, the upper part of the inner support plate is provided with a hanging ring.
Furthermore, the height of the inner support plate and the height of the arc-shaped plate are the same as the depth of the secant pile.
Furthermore, two inner supporting plates are arranged and are arranged in the radial direction, and a fan-shaped structure is formed between each inner supporting plate and each arc-shaped plate.
Furthermore, the steel bar cage is further included, and one side or two sides of the steel bar cage are symmetrically provided with connecting steel bars.
Further, the steel reinforcement cage include main muscle and main stirrup, main muscle sets up along axial direction, a plurality of main muscle are arranged on annular main stirrup along circumference, the lateral part of main muscle is equipped with connecting reinforcement.
Furthermore, the inner side of the main rib is provided with a reinforcing stirrup.
Furthermore, a reinforcing bracket is arranged on the inner side of the reinforcing stirrup.
Furthermore, the connecting steel bars are of triangular structures.
The utility model has the advantages that:
1. the application scope is wider than ordinary secant pile technology, can effectively strengthen being connected between reinforced concrete fender pile and the plain concrete pile, improves the resistance to deformation ability of original plain concrete pile, strengthens the wholeness. Aiming at the condition that the underground water level can not be effectively reduced at the periphery of the foundation pit in the high-speed rail deep foundation pit engineering, the capability of the foundation pit support for integrally resisting the load of soil and water outside the pit and the overall impermeability can be greatly improved, the construction quality of support and water stop is effectively ensured, and the construction safety of the deep foundation pit is further ensured.
2. The construction method can greatly save consumption of materials such as concrete and the like and consumption of corresponding artificial machinery, obviously reduce the workload of digging and transporting, and improve the construction efficiency. The whole energy consumption is greatly reduced, and the energy conservation and environmental protection are facilitated. The comprehensive cost is effectively reduced on the basis of the original process, and the method has obvious positive effects on the aspects of deep foundation pit supporting and waterproof curtain engineering construction period, four sections and one section for environmental protection and the like.
3. The locking device can be recycled, is green, environment-friendly and energy-saving.
4. The construction method is simple and convenient and is easy to implement on site;
the main scheme and the further selection schemes of the utility model can be freely combined to form a plurality of schemes, which are the schemes that can be adopted and claimed by the utility model; and the utility model discloses also can the independent assortment between (each non-conflict selection) selection and between other choices. The technical solutions to be protected by the present invention, which are various combinations that can be known to those skilled in the art based on the prior art and the common general knowledge after understanding the present invention, are not exhaustive herein.
Drawings
Fig. 1 is a schematic structural view of the locking device of the present invention.
Fig. 2 is the structural schematic diagram of the steel reinforcement cage of the utility model.
Fig. 3 is a schematic view of the construction steps of the present invention (hole formation of a support pile and an adjacent plain concrete pile).
Fig. 4 shows the construction steps of the present invention (hoisting the supporting pile cage and the locking device).
Fig. 5 is the construction steps of the present invention (pouring concrete).
Fig. 6 is the construction steps of the present invention (pulling out the locking device, forming holes on the adjacent support piles and plain concrete piles).
Fig. 7 shows the construction steps of the present invention (re-suspending the support pile cage and the locking device).
Fig. 8 is a schematic view of the construction steps of the present invention (concrete is poured again).
In the figure: 1-a locking device, 2-a reinforcement cage, 11-an inner support plate, 12-an arc plate, 13-a hanging ring, 21-a main reinforcement, 22-a main stirrup, 23-a reinforcement stirrup, 24-a reinforcement bracket and 25-a connecting reinforcement; 3-a support pile with a formed hole, 4-a concrete pile with a formed hole, 5-a support pile to be constructed, 6-a concrete pile with a formed hole, 7-poured concrete, 8-a support pile with a poured hole and 9-a concrete pile with a poured hole.
Detailed Description
The following non-limiting examples serve to illustrate the invention.
Example 1:
referring to fig. 1 and 2, a construction tool for a deep foundation pit secant pile of a high-speed rail line comprises a locking device 1 and a reinforcement cage 2. The locking device 1 is used for supporting the occlusion part (namely the overlapping part) between the support pile and the plain concrete pile, and provides a space for the pouring connection of the reinforcement cage 2 in the next process. The reinforcement cage 2 is arranged inside the support pile to enhance the structural strength of the support pile.
The fore shaft device 1 comprises an inner support plate 11 and an arc-shaped plate 12, and is formed by processing and manufacturing 6mm steel plates, two ends of the inner support plate 11 are respectively connected with two ends of the arc-shaped plate 12 in a welding mode, and a sealed occlusion connecting space is formed between the inner support plate 11 and the arc-shaped plate 12. The arc plate 12 is attached to the side wall of the pile hole, so that the arc plate 12 can completely cover the coincident arc section of the pile hole. The inner support plate 11 supports the inner support plate and encloses and blocks the concrete, so that the concrete is prevented from entering the occlusion connection space.
Specifically, the two inner support plates 11 are arranged in a radial direction, and an included angle α between the two inner support plates 11 and the length r of each inner support plate 11 are designed according to actual cylinder parameters. The outer ends of the two inner support plates 11 are respectively connected with two ends of the arc-shaped plate 12, the inner ends of the two inner support plates 11 are connected with each other, and the inner support plates 11 and the arc-shaped plate 12 are welded to form a fan-shaped structure, so that the triangular connecting steel bars 25 on the steel reinforcement cage 2 can be placed in the fan-shaped structure.
The arc length of the arc-shaped plate 12 is larger than the arc length of the overlapped part of the pile holes, so that the reserved occlusion connecting space is slightly larger than the overlapped arc section, the size of the plane of the occlusion connecting space is enlarged by 50-100 mm according to the size of each side of the occlusion part between the support pile and the plain concrete pile, and the adjustment construction is convenient. 2 lifting rings with the diameter phi 18 are welded on the upper portion of the inner support plate 11 so as to hoist the locking device 1. The heights of the inner support plate 11 and the arc-shaped plate 12 are the same as the pile depth of the secant pile, and can be properly adjusted according to different soil qualities and other conditions.
The steel reinforcement cage 2 includes main muscle 21 and main stirrup 22, and main muscle 21 sets up along axial direction, and a plurality of main muscle 21 are arranged on annular main stirrup 22 along the circumference ligature, and the inboard ligature of main muscle 21 is equipped with annular reinforcement stirrup 23, and the inboard ligature of reinforcement stirrup 23 is equipped with the reinforcing support 24 of three horn shapes.
One side of main muscle 21 is equipped with or bilateral symmetry is equipped with connecting reinforcement 25, and to the fender pile of tip, built-in steel reinforcement cage 2 only needs the unilateral to set up connecting reinforcement 25, and to the fender pile in the middle of, built-in steel reinforcement cage needs both sides to set up connecting reinforcement 25, and connecting reinforcement 25 is the triangle-shaped structure.
Referring to fig. 3 to 8, a construction method of the construction tool for the secant pile of the deep foundation pit of the near-high-speed rail line includes the following steps:
s1. according to the structure described in embodiment 1, the preparation of the locking device 1 and the reinforcement cage 2 is performed.
S2, firstly, drilling a pile body (supporting piles and plain concrete piles) according to the requirements of a supporting design drawing, digging to the designed bottom elevation, and cleaning holes for the first time.
And S3, drilling the pile body at the adjacent position of the pile phase, and digging to the designed bottom elevation.
And S4, cleaning the pile hole, performing secondary hole cleaning on the pile hole drilled before, and cleaning the pile bottom to form the support pile 3 formed with the holes and the concrete pile 4 formed with the holes, as shown in figure 3.
S5, hoisting the reinforcement cage 2, wherein the reinforcement cage 2 is additionally provided with triangular connecting reinforcements 25 which are arranged along with the length of a pile body and face the direction of the plain concrete pile from the supporting pile on the basis of reinforcement arrangement according to general design requirements in the construction method, the connecting reinforcements 25 are firmly welded with the reinforcement cage 2 of the supporting pile, the reinforcement cage 2 is placed into the support pile 3 which is formed with the hole, and the connecting reinforcements 25 of the reinforcement cage 2 extend into the plain concrete pile 4 which is formed with the hole.
S6, the locking device 1 is hoisted into the constructed hole-forming concrete pile 4 and is placed at the occluded part of the constructed hole-forming concrete pile 4 and the supporting pile 5 to be constructed, the arc-shaped plate 12 is completely attached to the pile hole coincident arc section, accurate positioning and installation are required, and reservation is made for the construction of the adjacent lower pile holes, as shown in figure 4.
S7, arranging a guide pipe, and carrying out concrete pouring on the support piles 3 with the formed holes and the concrete piles 4 with the formed holes, as shown in figure 5. The guide pipe is put down from the middle position of the reinforcement cage, and cannot collide with the reinforcement cage; when the conduit is placed in place for the first time, the distance from the bottom of the conduit to the bottom of the hole is preferably 300-500 mm; the hopper needs to have enough concrete storage before the first discharge, and the condition that the pipe is buried below the concrete pouring surface for one time is not less than 0.8m is ensured; in the pouring process, the depth of the conduit embedded in the concrete is preferably 2-6 m; the catheter is strictly prevented from being lifted out of the concrete pouring surface and the speed of lifting the catheter should be controlled.
S8, after the concrete in the hole-forming element concrete pile 4 is initially set, the locking device 1 is lifted, and the lifting operation can be carried out by matching with a vibration hammer according to actual conditions.
And S9, forming the hole-formed support pile 3 and the hole-formed plain concrete pile 4 into a poured support pile 8 and a poured plain concrete pile 9, and constructing the support pile 5 to be constructed and the plain concrete pile 6 to be constructed at the adjacent pile positions according to the steps S2-S4 to form the hole-formed support pile 3 and the hole-formed plain concrete pile 4, as shown in FIG. 6. Pouring construction is carried out according to S5-S6, the basic procedure is that a locking device is arranged on the plain concrete pile body, an occlusion part is reserved, the triangular connecting steel bars welded on the reinforcing cage of the supporting pile extend into the plain concrete pile, and concrete is poured after the supporting pile is installed in place, as shown in the figures 7 and 8. And the construction is circulated until the final pile body is completely constructed.
S7, vibrating the fore shaft device by a vibration hammer, wherein the outer surface of the fore shaft device is provided with a bulge, and the concrete compactness of the pile body can be effectively increased by vibration; s8, a locking device is lifted by matching with a vibration hammer, and the outer surface of the locking device protrudes to perform groove broaching on the poured concrete surface in the lifting process, so that the roughness of the concrete surface is increased, the occlusal force of the occlusal surface is improved, the water flow seepage path is also lengthened, and the anti-seepage capability is improved.
The aforesaid the utility model discloses basic embodiment and each further alternative can the independent assortment in order to form a plurality of embodiments, is the utility model discloses can adopt and claim the embodiment of protection. In the scheme of the utility model, each selection example can be combined with any other basic examples and selection examples at will.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a be close to construction frock of high-speed railway line deep basal pit secant pile, includes fore shaft device (1), its characterized in that: the locking device (1) comprises an inner supporting plate (11) and an arc-shaped plate (12), two ends of the inner supporting plate (11) are respectively connected with two ends of the arc-shaped plate (12), and a sealed occlusion connecting space is formed between the inner supporting plate (11) and the arc-shaped plate (12).
2. The construction tool for the secant pile of the deep foundation pit of the near-high-speed rail line according to claim 1, characterized in that: the arc length of the arc-shaped plate (12) is larger than that of the overlapped part of the pile holes, and the heights of the inner support plate (11) and the arc-shaped plate (12) are the same as the pile depth of the secant pile.
3. The construction tool for the secant pile of the deep foundation pit near the high-speed rail line according to claim 1, characterized in that: the upper part of the inner support plate (11) is provided with a hanging ring (13).
4. The construction tool for the secant pile of the deep foundation pit near the high-speed rail line according to claim 1, characterized in that: the two inner support plates (11) are arranged in the radial direction, and a fan-shaped structure is formed between the inner support plates (11) and the arc-shaped plates (12).
5. The construction tool for the secant pile of the deep foundation pit near the high-speed rail line as claimed in any one of claims 1 to 4, is characterized in that: the steel bar cage is characterized by further comprising a steel bar cage (2), wherein one side or two sides of the steel bar cage (2) are symmetrically provided with connecting steel bars (25).
6. The construction tool for the secant pile of the deep foundation pit near the high-speed rail line according to claim 5, is characterized in that: reinforcing bar cage (2) include main muscle (21) and main stirrup (22), main muscle (21) set up along axial direction, a plurality of main muscle (21) are arranged on annular main stirrup (22) along circumference, the lateral part of main muscle (21) is equipped with connecting reinforcement (25).
7. The construction tool for the secant pile of the deep foundation pit near the high-speed rail line according to claim 6, characterized in that: the inner side of the main reinforcement (21) is provided with a reinforcement stirrup (23), and the inner side of the reinforcement stirrup (23) is provided with a reinforcement bracket (24).
8. The construction tool for the secant pile of the deep foundation pit near the high-speed rail line according to claim 5, is characterized in that: the connecting steel bars (25) are of triangular structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220400903.9U CN217325391U (en) | 2022-02-24 | 2022-02-24 | Construction tool for high-speed rail line deep foundation pit secant pile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220400903.9U CN217325391U (en) | 2022-02-24 | 2022-02-24 | Construction tool for high-speed rail line deep foundation pit secant pile |
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| CN217325391U true CN217325391U (en) | 2022-08-30 |
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| CN202220400903.9U Active CN217325391U (en) | 2022-02-24 | 2022-02-24 | Construction tool for high-speed rail line deep foundation pit secant pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482070A (en) * | 2022-02-24 | 2022-05-13 | 中国五冶集团有限公司 | Construction tool and construction method for secant pile of deep foundation pit of high-speed rail-bound line |
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2022
- 2022-02-24 CN CN202220400903.9U patent/CN217325391U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482070A (en) * | 2022-02-24 | 2022-05-13 | 中国五冶集团有限公司 | Construction tool and construction method for secant pile of deep foundation pit of high-speed rail-bound line |
| CN114482070B (en) * | 2022-02-24 | 2024-04-09 | 中国五冶集团有限公司 | Construction tool and construction method for temporary high-speed railway line deep foundation pit occluding pile |
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