CN109356145B - Elevation limiting device of steel pipe-steel sheet pile combined enclosure system and construction method - Google Patents
Elevation limiting device of steel pipe-steel sheet pile combined enclosure system and construction method Download PDFInfo
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- CN109356145B CN109356145B CN201811313108.0A CN201811313108A CN109356145B CN 109356145 B CN109356145 B CN 109356145B CN 201811313108 A CN201811313108 A CN 201811313108A CN 109356145 B CN109356145 B CN 109356145B
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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
- E02D5/02—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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- 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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- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention relates to an elevation limiting device of a steel pipe-steel sheet pile combined enclosure system and a construction method, wherein the elevation limiting device mainly comprises a tool type reaction frame, a telescopic device and an elevation limiter, the telescopic device can adjust and stretch along a telescopic channel at the upper part of the tool type reaction frame, and the elevation limiter is sleeved on a reaction beam of the telescopic device through a hanging sleeve. The main construction steps comprise: the elevation limiting device is used for assembling, assisting in the construction and the driving of the steel pipe pile and the initial steel pipe pile, constructing and driving steel sheet piles in sequence, and after each steel sheet pile is constructed and driven, the elevation limiting device is used for pulling and limiting the follow-up pile, and the follow-up steel pipe pile is constructed and driven. The device provided by the invention adopts a tool type design concept, is convenient to assemble and disassemble, has high construction efficiency, can accurately control the elevation of different combined enclosure systems of the steel pipe and the steel sheet pile, and has better economic and technical benefits.
Description
Technical Field
The invention relates to the technical field of pile foundation construction, in particular to an elevation limiting device and a construction method of a steel pipe-steel sheet pile combined enclosure system, which are suitable for steel sheet pile elevation control construction in the process of inserting and driving the steel pipe-steel sheet pile combined enclosure system, and are particularly suitable for design of multiple steel sheet pile elevation control construction between adjacent steel pipe piles.
Background
The steel pipe-steel sheet pile combined enclosure system is used as a novel support system, is applied to soft soil areas at present, and is poor in quality and friction resistance due to the fact that the steel pipe piles and the steel sheet piles are lack of relevant construction technical experience in construction, so that the steel pipe piles (or the steel sheet piles) can drive the steel sheet piles adjacent to the existing soil to sink together in the soil entering process, repeated pulling and driving are caused, and the construction progress of piling is seriously affected. Especially, in the case of designing a plurality of steel sheet piles between two steel pipe piles, no practical control measures are available.
Aiming at the problem that a plurality of steel sheet piles are designed between two steel pipe piles and sink along with the piles in actual engineering to cause repeated pulling and driving, it is necessary to develop a tool type elevation limiting device and a construction method thereof.
Disclosure of Invention
The invention aims at solving the problem that a steel pipe pile (or steel sheet pile) can drive the steel sheet pile adjacent to the soil to sink together in the soil-entering process to cause repeated pulling and driving in the practical application process of a steel pipe-steel sheet pile combined enclosure system, and develops a tool type elevation limiting device and a construction method thereof, so that the phenomenon of steel sheet pile following can be well solved.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the invention relates to an elevation limiting device of a steel pipe-steel sheet pile combined enclosure system, which comprises a tool type reaction frame, a telescopic device and an elevation limiter, wherein the tool type reaction frame is arranged on the tool type reaction frame; the tool type counter-force frame is a frame consisting of longitudinal beams and cross beams, the bottoms of the longitudinal beams are provided with fixed pincers, the tops of the longitudinal beams are provided with two telescopic channels in parallel along the direction of the cross beams, and the telescopic channels are fixed with the longitudinal beams through welding steel backing plates; the telescopic device is arranged in the corresponding telescopic channel and comprises a counter-force beam and a telescopic adjusting rod, the left end of the counter-force beam is fixedly connected with the right end of the telescopic adjusting rod, and the left end of the telescopic adjusting rod is provided with a handle; the elevation limiter comprises a hanging sleeve, a cable chain and a steel plate lifting clamp, wherein the hanging sleeve is sleeved at the right end of the counter-force beam, a steel sleeve is arranged at the bottom of the hanging sleeve, and the steel plate lifting clamp is hung below the steel sleeve through the cable chain.
Preferably, the right end of the telescopic channel is provided with an opening, the left end is of a closed structure, the center position of the closed structure at the left end is provided with a nut A, the outer ring of the telescopic adjusting rod is provided with threads, the telescopic adjusting rod penetrates through the nut A, and the threads are matched with the nut A.
Preferably, the axle center position of the counter-force beam is provided with a bearing, the center position of the inner ring of the bearing is provided with a nut B, the nut B is rotationally connected with the bearing, and the right end of the telescopic adjusting rod is connected with the nut B.
The construction method of the elevation limiting device based on the steel pipe-steel sheet pile combined enclosure system is characterized by comprising the following steps of:
s1: the method comprises the steps of (1) constructing an initial steel pipe pile, and constructing an auxiliary steel pipe pile along the reverse direction of the constructing axis of the steel pipe pile;
s2: manufacturing an elevation limiting device of a steel pipe-steel sheet pile combined enclosure system, installing the elevation limiting device on an initial steel pipe pile and an auxiliary steel pipe pile, and fixing the elevation limiting device through fixing pliers;
s3: after the first steel sheet pile is driven to the designed elevation, one of the reaction beams is extended by rotating the handle of one of the telescopic devices, the elevation limiter is hung on the reaction beam, the steel plate lifting pliers bite the first steel sheet pile, then a second steel sheet pile is constructed, after the second steel sheet pile is driven to the designated elevation, the handle of the other telescopic device is rotated to extend the reaction beam, the elevation limiter is hung on the reaction beam, the steel plate lifting pliers bite the second steel sheet pile, and so on until all steel sheet piles among the adjacent steel pipe piles are driven;
s4: constructing a second steel pipe pile, and then removing the elevation limiting device of the steel pipe-steel sheet pile combined enclosure system;
s5: and (5) repeating the steps S2-S4 to finish the construction of all the steel pipe piles and the steel sheet piles.
Preferably, the manufacturing and mounting of the elevation limiting device of the steel pipe-steel sheet pile combined enclosure system in the step S2 comprises the following steps:
s2.1: manufacturing a tool type reaction frame according to the axial distance between adjacent steel sheet piles, welding fixing pliers at the bottoms of two ends of a longitudinal beam respectively, welding steel backing plates at the bottoms of two ends of a telescopic channel, fixing the welded steel backing plates on a cross beam through bolts, drilling holes at a closed structure at the left end of the telescopic channel, and arranging nuts A;
s2.2: the outer ring of the bearing is welded and fixed at the left end of a counter-force beam, a nut B is arranged at the center of the inner ring of the bearing, the counter-force beam is inserted into a telescopic channel, and a telescopic adjusting rod penetrates through the nut A to fix the right end of the telescopic adjusting rod with the nut B;
s2.3: preparing a plurality of elevation limiters, welding a steel sleeve at the bottom of the hanging sleeve, and connecting the steel plate hoisting clamp with the hanging sleeve by a cable chain through the steel sleeve.
Preferably, in S1, the distance between the auxiliary steel pipe pile and the initial steel pipe pile is the same as the distance between adjacent steel pipe piles required by the design, and the top height of the auxiliary steel pipe pile is the same as the top height of the initial steel pipe pile.
Preferably, in S2.2, the bearing, the reaction beam and the nut B are all on the same axis.
Preferably, in the step S2.2, when the telescopic adjusting rod is fixed to the nut B, the reaction beam is firstly placed in the telescopic channel until the inner ring of the telescopic channel is not allowed to rotate by the balls of the temporary fixed bearing, then the telescopic adjusting rod is rotated to pass through the nut a to the nut B, the end part of the telescopic adjusting rod is fixed to the nut B, and after the reaction beam and the telescopic adjusting rod are connected and fixed, the limiting measure of the balls of the bearing is released.
The invention has the following characteristics and beneficial effects:
(1) Through instrument formula elevation restriction device, effectively prevent the steel-pipe pile because of with the pile and lead to the uneven problem that will draw repeatedly of elevation, make steel-pipe pile and steel sheet pile relative elevation can once only reach the design requirement to improve construction quality, reduced intensity of labour and construction cost greatly, guaranteed the construction progress.
(2) The extension length can be adjusted along the tool type reaction frame to the telescopic device, the application of the steel sheet pile and the steel pipe pile is not affected, the telescopic device can be suitable for the situation that one or more steel sheet piles are designed between two steel pipe piles, the application range is wide, and the applicability is strong.
(3) The tool type counter-force frame bottom and the steel pipe pile are fixed by the fixing pliers, so that the tool type counter-force frame is convenient to assemble and disassemble, the positions of the fixing pliers can be adjusted according to the sizes of the steel pipe piles, and the tool type counter-force frame can be reused.
(4) The telescopic channel and the longitudinal beam of the tool type reaction frame are fixed by bolts, the position of the telescopic channel can be adjusted according to the size and the axial position of the steel sheet pile, and the telescopic channel can be reused.
Drawings
FIG. 1 is a schematic structural view of an elevation limiting device of a steel pipe-steel sheet pile combined containment system;
FIG. 2 is a plan view of a tool-type reaction frame;
FIG. 3 is a cross-sectional view of section A-A of the tool-type reaction frame of FIG. 2;
FIG. 4 is a cross-sectional view of section B-B of FIG. 3;
FIG. 5 is a block diagram of a telescoping device;
FIG. 6 is a side view of the elevation limiter
FIG. 7 is a cross-sectional view of the elevation limiter C-C
FIG. 8 is a plan view of a tool-type reaction frame attached to an auxiliary steel pipe pile and a starting steel pipe pile
FIG. 9 is a plan view of a first steel sheet pile inserted between steel pipe piles
FIG. 10 is a plan view of a second steel sheet pile inserted between steel pipe piles
FIG. 11 is a plan view showing the construction of a third steel sheet pile inserted between steel pipe piles
Fig. 12 is a plan view of a second steel pipe pile
FIG. 13 is a plan view of a subsequent steel pipe pile and sheet pile insertion and driving structure
Fig. 14 to 19 are side view structural diagrams corresponding to fig. 8 to 13, respectively;
in the figure: 1. auxiliary steel pipe pile, 2, initial steel pipe pile, 3, tool type reverse, 31, longitudinal beam, 32, cross beam, 33, telescopic channel, 34, steel backing plate, 35, fixed clamp, 36, bolt, 37, nut A,4, telescopic device, 41, counter-force beam, 42, telescopic adjusting rod, 43, handle, 44, nut B,45, bearing, 5, elevation limiter, 51, hanging sleeve, 52, steel sleeve, 53, cable chain, 54, steel plate lifting clamp, 6, steel plate pile and 7, second steel pipe pile.
Description of the embodiments
The present invention will be described in further detail below by way of examples of foundation pit support engineering with reference to the accompanying drawings, and the following examples are not intended to limit the scope of the invention. A Larson steel sheet pile and steel pipe pile combined supporting system is adopted in the design of a foundation pit enclosure engineering, and the two steel pipe piles are connected in a mode of small seam allowance of 3 steel sheet piles.
Referring to fig. 1, the elevation limiting device of the steel pipe-steel sheet pile combined enclosure system comprises a tool type reaction frame 3, a telescopic device 4 and an elevation limiter 5.
As shown in fig. 2, 3 and 4, the tool-type reaction frame 3 includes a longitudinal beam 31, a cross beam 32, a telescopic channel 33, a steel backing plate 34, a fixing clamp 35, a bolt 36 and a nut a37. The longitudinal beam 31 and the transverse beam 32 are made of steel and welded to form a frame structure, and the lengths of the longitudinal beam 31 and the transverse beam 32 are determined according to the sizes of steel pipes and steel sheet piles, the number of the steel sheet piles between the two steel sheet piles and the like. Fixing pliers 35 are respectively arranged at the bottoms of the two ends of the longitudinal beam 31 according to the diameter of the steel pipe pile, and the fixing mode is welded or connected by bolts; the telescopic channel 33 is made of square steel or thick steel plates welded into square steel, a welding nut A37 is arranged at the central position of one closed end, steel backing plates 34 are welded at the bottom positions of two ends of the telescopic channel 33, bolt holes are drilled in the steel backing plates 34, and the telescopic channel 33 is fixed on the longitudinal beam 31 by bolts 36 according to the axial position of a steel sheet pile.
As shown in fig. 5, the expansion device 4 includes a reaction beam 41, an expansion adjustment lever 42, a handle 43, a nut B44, and a bearing 45. The counter-force beam 41 is made of profile steel, the section size is slightly smaller than the section size in the telescopic channel 33, and the length of the counter-force beam 41 is longer than the length of the telescopic channel 33; the outer ring of the bearing 45 is welded and fixed at one end of the counter-force beam 41, the nut B44 is welded and fixed at the center position of the inner ring of the bearing 45, the bearing 45 is fixedly connected with the counter-force beam 41 and can not rotate, and the nut B44 can rotate along the bearing 45 because the nut B44 is welded and fixed at the center position of the inner ring of the bearing 45; the telescopic adjusting rod 42 is a threaded screw rod, the size of the threaded screw rod is matched with that of the nut A37 and the nut B44, the length of the threaded screw rod is determined according to the length of the telescopic screw rod which is required, and a handle 43 is arranged at one end of the threaded screw rod.
As shown in fig. 1, the tool-type reaction frame 3 is assembled with the expansion device 4, the balls of the temporary fixing bearing 45 do not rotate the inner ring, then the expansion adjustment lever 42 is rotated to pass through the nuts a37 to B44, the end of the expansion adjustment lever 42 is fixed in the nuts B44, after the reaction beam 41 and the expansion adjustment lever 42 are connected and fixed, the limitation measure of the balls of the bearing 45 is released, and after the installation is completed, the expansion of the reaction beam 41 can be adjusted by rotating the handle 43.
As shown in fig. 6 and 7, the elevation limiter 5 includes a hanging sleeve 51, a steel sleeve 52, a cable chain 53, and a steel plate lifting clamp 54. The hanging sleeve 51 is made of square steel or thick steel plates welded into square steel, a steel sleeve 52 is welded at the bottom, and a cable 53 penetrates through the steel sleeve 52 to connect the steel plate lifting clamp with the hanging sleeve 51.
As shown in fig. 8 and 14, the tool type elevation limiting device is fixed by mounting the tool type reaction frame 3 on the starting steel pipe pile 2 and the auxiliary steel pipe pile 1, and is fixed by the fixing clamp 35.
As shown in fig. 9 and 15, before the first steel sheet pile 6 is inserted, the expansion device 4 is adjusted so that the reaction beam is retracted into the expansion channel 33, so as not to affect the insertion of the steel sheet pile 6.
As shown in fig. 10 and 16, after the first steel sheet pile 6 is driven to a predetermined elevation, the handle 43 of one of the telescopic devices 4 is rotated to extend the reaction beam 41 to a predetermined length, the elevation limiter 5 is hung on the reaction beam 41, and the steel sheet lifting tongs 54 bite the first steel sheet pile and then the second steel sheet pile is started to be constructed.
As shown in fig. 11 and 17, after the second steel sheet pile is driven to the specified elevation, the handle 42 of the other telescopic device 4 is rotated to extend the reaction beam 41 to the specified length, the elevation limiter 5 is hung on the reaction beam 41, the second steel sheet pile is gripped by the steel sheet lifting pliers 54, and the third steel sheet pile driving is started.
As shown in fig. 12 and 18, after the third steel sheet pile is constructed and driven to the specified elevation, the handle 42 of the other telescopic device 4 is rotated to extend the reaction beam 41 until the specified length, the elevation limiter 5 is hung on the reaction beam 41, the steel sheet lifting clamp 54 bites the third steel sheet pile, the second steel pipe pile is started to be driven, and one construction cycle process is completed after the second steel pipe pile is driven.
As shown in fig. 13 and 19, after the second steel pipe pile is driven, the elevation limiter 5 can be removed by loosening the locking device of the steel plate lifting clamp 54, then the expansion device 4 is adjusted to enable the reaction beam 41 to retract into the expansion channel 33, finally the tool type reaction frame 1 can be removed for the next use by loosening the fixing clamp 35 at the bottom of the tool type reaction frame 1, and the following steel pipe piles and steel pipe piles are driven alternately by analogy. The tool type reaction frame 3 is placed on the starting steel pipe pile 2 and the second steel pipe pile 7 and fixed by the fixing clamp 35.
The main construction process of the tool type elevation limiting device of the steel pipe-steel sheet pile combined enclosure system is as follows:
step one, manufacturing a tool type reaction frame: according to the axial distance between adjacent steel sheet piles, a tool type reaction frame 3 is designed and manufactured, longitudinal beams 31 and cross beams 32 are made of profile steel and welded into a frame structure, fixing clamps 35 are respectively arranged at the bottoms of the two ends of the longitudinal beams 31, and the fixing modes are welded or connected through bolts; the telescopic channel 33 is made of square steel or thick steel plates welded into square steel, a welding nut A37 is arranged at the central position of one closed end, steel backing plates 34 are welded at the bottom positions of two ends of the telescopic channel 33, bolt holes are drilled in the steel backing plates 34, and the telescopic channel 33 is fixed on the longitudinal beam 31 by bolts 36 according to the axial position of a steel sheet pile.
Step two, manufacturing a telescopic device: the counter-force beam 41 is made of profile steel, the outer ring of the bearing 45 is welded and fixed at one end of the counter-force beam 41, the nut B44 is welded and fixed at the center position of the inner ring of the bearing 45, and the bearing 45, the counter-force beam 41 and the nut B44 are ensured to be on the same axis; the telescopic adjusting rod 42 adopts a threaded screw rod, and one end of the telescopic adjusting rod is provided with a handle 43.
Step three, manufacturing an elevation limiter: the hanging sleeve 51 is made of square steel or thick steel plates welded into square steel, a steel sleeve 52 is welded at the bottom, and a cable 53 penetrates through the steel sleeve 52 to connect the steel plate lifting clamp with the hanging sleeve 51.
Fourth, assembling the tool type elevation limiting device: after the tool type reaction frame 3, the telescopic device 4 and the elevation limiter 5 are manufactured, firstly, the reaction beam 41 is placed in the telescopic channel 33 until the inner ring of the reaction beam is prevented from rotating by the balls of the temporary fixing bearing 45, secondly, the telescopic adjusting rod 42 is rotated to pass through the nuts A37 and B44, the end part of the telescopic adjusting rod 42 is fixed in the nuts B44, and after the reaction beam 41 and the telescopic adjusting rod 42 are connected and fixed, the limiting measure of the balls of the bearing 45 is released.
Step five, auxiliary steel pipe piles and initial steel pipe piles are applied and driven: after the measurement paying-off is completed, the initial steel pipe pile 2 is started to be driven, the auxiliary steel pipe pile 1 is driven in the opposite direction of the driving axis, the distance between the auxiliary steel pipe pile 1 and the initial steel pipe pile 2 is the same as the distance between the adjacent steel pipe piles required by design, and after the driving is completed, the tool type counterforce frame 3 is placed on the initial steel pipe pile 2 and the auxiliary steel pipe pile 1 and is fixed through the fixing pliers 35.
Step six, steel sheet pile construction: after the first steel sheet pile 6 is driven to the designated elevation, the handle 42 of one telescopic device 4 is rotated to enable the counter-force beam 41 to extend to the designated length, the elevation limiter 5 is hung on the counter-force beam 41, the steel sheet lifting pliers 54 bite the first steel sheet pile and then start to construct a second steel sheet pile, after the second steel sheet pile is driven to the designated elevation, the handle 42 of the other telescopic device 4 is rotated to enable the counter-force beam 41 to extend to the designated length, the elevation limiter 5 is hung on the counter-force beam 41, the steel sheet lifting pliers 54 bite the second steel sheet pile, and so on until all the steel sheet piles 6 between the adjacent steel pipe piles are driven.
Seventh, the second steel pipe pile is driven: when the second steel pipe pile is driven, the steel plate pile can sink with the pile, after the cable chain 53 of the elevation limiter 5 is tensioned, the steel plate lifting clamp 54 biting the steel plate pile 6 can lock the biting mouth to bite the steel plate pile, so that the steel plate pile is prevented from sinking with the pile, and a construction cycle process is completed after the second steel pipe pile is driven.
Eighth, subsequent steel sheet piles and steel pipe piles are cast: after the second steel pipe pile is driven to the designed elevation, the elevation limiter 5 can be removed by loosening the locking device of the steel plate lifting clamp 54, then the expansion device 4 is adjusted to enable the counter-force beam 41 to retract into the expansion channel 33, finally the tool-type counter-force frame 1 can be removed for the next use by loosening the fixing clamp 35 at the bottom of the tool-type counter-force frame 1, and the following steel pipe piles and steel pipe piles are alternately driven by analogy.
The present invention has been described in detail with reference to the embodiments, but the description is only the preferred embodiments of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention should be considered as falling within the scope of the present invention.
Claims (8)
1. The utility model provides an elevation limiting device of steel pipe-steel sheet pile combination enclosure system which characterized in that: the device comprises a tool type counterforce frame (3), a telescopic device (4) and an elevation limiter (5); the tool type counter-force frame (3) is a frame formed by longitudinal beams (31) and transverse beams (32), the bottoms of the longitudinal beams (31) are provided with fixed clamps (35), the tops of the longitudinal beams (31) are provided with two telescopic channels (33) in parallel along the direction of the transverse beams (32), and the telescopic channels (33) are fixed with the longitudinal beams (31) through welded steel backing plates (34); the telescopic device (4) is arranged in a corresponding telescopic channel (33) and comprises a counter-force beam (41) and a telescopic adjusting rod (42), the left end of the counter-force beam (41) is fixedly connected with the right end of the telescopic adjusting rod (42), and the left end of the telescopic adjusting rod (42) is provided with a handle (43); the elevation limiter (5) comprises a hanging sleeve (51), a cable chain (53) and a steel plate lifting clamp (54), wherein the hanging sleeve (51) is sleeved at the right end of the counter-force beam (41), a steel sleeve (52) is arranged at the bottom of the hanging sleeve (51), and the steel plate lifting clamp (54) is hung below the steel sleeve (52) through the cable chain (53).
2. The elevation limiting device of the steel pipe-steel sheet pile combined containment system according to claim 1, wherein: the right end of the telescopic channel (33) is provided with an opening, the left end is of a closed structure, the center of the closed structure at the left end is provided with a nut A (37), the outer ring of the telescopic adjusting rod (42) is provided with threads, the telescopic adjusting rod (42) penetrates through the nut A (37), and the threads are matched with the nut A (37).
3. The elevation limiting device of the steel pipe-steel sheet pile combined containment system according to claim 1, wherein: the axle center position of counter-force beam (41) be equipped with bearing (45), bearing (45) inner circle central point put and be equipped with nut B (44), nut B (44) are connected with bearing (45) rotation, the right-hand member of telescopic adjustment pole (42) be connected with nut B (44).
4. A construction method of an elevation limiting device based on the steel pipe-steel sheet pile combined enclosure system as claimed in claim 1, characterized by comprising the following steps:
s1: a starting steel pipe pile (2) is driven, and an auxiliary steel pipe pile (1) is driven along the reverse direction of the driving axis of the steel pipe pile;
s2: manufacturing an elevation limiting device of a steel pipe-steel sheet pile combined enclosure system, installing the elevation limiting device on an initial steel pipe pile (2) and an auxiliary steel pipe pile (1) and fixing the elevation limiting device through fixing pliers (35);
s3: after the first steel sheet pile (6) is driven to a designed elevation, one of the reaction beams (41) is extended by rotating a handle (43) of one telescopic device (4), an elevation limiter (5) is hung on the reaction beam (41), a steel plate lifting clamp (54) bites the first steel sheet pile, then a second steel sheet pile is constructed, after the second steel sheet pile is driven to a specified elevation, the handle (43) of the other telescopic device (4) is rotated to extend the reaction beam (41), the elevation limiter (5) is hung on the reaction beam (41), the second steel sheet pile is clamped by a steel plate lifting clamp (54), and the like until all steel sheet piles (6) between adjacent steel pipe piles are driven;
s4: constructing a second steel pipe pile (7), and then dismantling an elevation limiting device of the steel pipe-steel sheet pile combined containment system;
s5: and (5) repeating the steps S2-S4 to finish the construction of all the steel pipe piles and the steel sheet piles.
5. The construction method of the elevation limiting device of the steel pipe-steel sheet pile combined enclosing system according to claim 4, wherein the manufacturing and mounting of the elevation limiting device of the steel pipe-steel sheet pile combined enclosing system in S2 comprises the following steps:
s2.1: manufacturing a tool type reaction frame (3) according to the axial distance between adjacent steel sheet piles, welding fixing pliers (35) at the bottoms of two ends of a longitudinal beam (31), welding steel backing plates (34) at the bottoms of two ends of a telescopic channel (33), fixing the welded steel backing plates (34) on a cross beam (31) through bolts (36), drilling holes at a closed structure at the left end of the telescopic channel (33), and arranging nuts A (37);
s2.2: the outer ring of the bearing (45) is welded and fixed at the left end of the counter-force beam (41), the nut B (44) is arranged at the center of the inner ring of the bearing (45), the counter-force beam (41) is inserted into the telescopic channel (33), the telescopic adjusting rod (42) passes through the nut A (37), and the right end of the telescopic adjusting rod is fixed with the nut B (44);
s2.3: a plurality of elevation limiters (5) are prepared, a steel sleeve (52) is welded at the bottom of a hanging sleeve (51), and a cable chain (53) penetrates through the steel sleeve (52) to connect the steel plate hoisting clamp with the hanging sleeve (51).
6. The construction method of the elevation limiting device of the steel pipe-steel sheet pile combined containment system, according to claim 4, is characterized by comprising the following steps: in the S1, the distance between the auxiliary steel pipe pile (1) and the initial steel pipe pile (2) is the same as the distance between adjacent steel pipe piles required by design, and the top height of the auxiliary steel pipe pile (1) is the same as the top height of the initial steel pipe pile (2).
7. The construction method of the elevation limiting device of the steel pipe-steel sheet pile combined containment system, according to claim 5, is characterized by comprising the following steps: in S2.2, the bearing (45), the reaction beam (41), and the nut B (44) are all on the same axis.
8. The construction method of the elevation limiting device of the steel pipe-steel sheet pile combined containment system, according to claim 5, is characterized by comprising the following steps: in S2.2, when the telescopic adjusting rod (42) is fixed with the nut B (44), firstly, the counterforce beam (41) is placed in the telescopic channel (33) until the inner ring of the telescopic channel is at the innermost position, the balls of the temporary fixing bearing (45) do not rotate, secondly, the telescopic adjusting rod (42) is rotated to pass through the nut a (37) to the nut B (44), the end part of the rotary telescopic adjusting rod (42) is fixed in the nut B (44), and after the counterforce beam (41) and the telescopic adjusting rod (42) are connected and fixed, the limiting measure of the balls of the bearing (45) is released.
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| CN201811313108.0A CN109356145B (en) | 2018-11-06 | 2018-11-06 | Elevation limiting device of steel pipe-steel sheet pile combined enclosure system and construction method |
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| CN201811313108.0A CN109356145B (en) | 2018-11-06 | 2018-11-06 | Elevation limiting device of steel pipe-steel sheet pile combined enclosure system and construction method |
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| CN109356145B true CN109356145B (en) | 2023-09-26 |
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| CN102605788A (en) * | 2012-04-01 | 2012-07-25 | 上海振中机械制造有限公司 | Double-tube-sinking and inner-tube-drawing bored cast-in-place pile construction method and application |
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| CN209144785U (en) * | 2018-11-06 | 2019-07-23 | 福建卓越建设工程开发有限公司 | A kind of absolute altitude limits device of steel pipe-steel sheet pile combination surrounding protective sys-tem |
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