CN112081101B - Steel pipe temporary support restraint system - Google Patents
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- CN112081101B CN112081101B CN202010959033.4A CN202010959033A CN112081101B CN 112081101 B CN112081101 B CN 112081101B CN 202010959033 A CN202010959033 A CN 202010959033A CN 112081101 B CN112081101 B CN 112081101B
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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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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Abstract
The invention discloses a steel pipe temporary support restraint system which comprises a vertically arranged steel casing, wherein an inner support assembly is arranged inside the steel casing; the inner support assembly comprises a support ring and a fixing ring, the outer ring of the fixing ring is fixedly connected with the inner wall of the steel casing, radial expansion pieces are distributed on the support ring, each radial expansion piece comprises a fixed guide cylinder and a sliding support rod, the fixed guide cylinders are radially fixed on the support ring, and the sliding support rods are movably arranged in the fixed guide cylinders in a penetrating manner; a clamping joint is fixed at the outer end of the sliding support rod, a clamping slot is arranged on the clamping joint, and the clamping slot is occluded on the fixing ring; an axial anchor rod is arranged in the steel casing, and the inner ends of all the sliding support rods face and tightly abut against the axial anchor rod. The steel pile has the obvious effects that through reasonable arrangement of the steel casing, after the steel casing enters a rock and is cleaned, a stable supporting framework can be conveniently and quickly formed in the steel casing, and the stability of the steel pipe pile after concrete is poured can be kept on the basis of simplifying later-stage operation.
Description
Technical Field
The invention relates to a steel pipe pile, in particular to a steel pipe temporary support restraint system.
Background
In the engineering construction process, the problems of trestle erection and the like in an exposed bedrock area can be faced, and the problems of rock breaking depth, stability and the like of the steel pipe pile for temporary support serving as a support trestle foundation are particularly important. The construction of the steel pipe pile is a key in the construction of the whole trestle, and the difficulty is high; at present, a steel casing is hammered by a pile hammer and is driven into rock, so that the steel pipe pile is fixed. Due to the fact that the hardness of the rock is high, the situations that the steel pipe pile is difficult to hammer and the rock-entering depth is insufficient easily occur in the hammering process; meanwhile, the traditional mode of improving the stability of the steel pipe pile is mainly that concrete is poured after a steel reinforcement cage is placed below the traditional mode, the mode has the problems of inconvenient processing, complex hoisting and the like, and under partial conditions, the condition that the steel reinforcement and the concrete are excessively input exists, so that the temporary support seat is obviously not cost-effective to build.
Therefore, the problems of rock breaking and rock entering of the steel pipe pile need to be solved, and the pouring of concrete in the steel casing is simplified.
Disclosure of Invention
In view of this, the invention provides a temporary steel pipe supporting and restraining system in order to simplify the pouring process of concrete in a steel casing and maintain the supporting stability of a steel pipe pile.
The technical scheme is as follows:
the utility model provides a steel pipe temporary support restraint system which the key lies in: the steel pile casing comprises a vertically arranged steel pile casing, wherein an inner support assembly is arranged inside the steel pile casing and is close to the bottom of the steel pile casing;
the inner support assembly comprises a support ring and a fixing ring, the support ring and the fixing ring are coaxially arranged with the steel casing, the outer ring of the fixing ring is fixedly connected with the inner wall of the steel casing, and the support ring is located in the range of the inner ring of the fixing ring;
at least three radial telescopic pieces are circumferentially distributed on the support ring, each radial telescopic piece comprises a fixed guide cylinder and a sliding support rod, the fixed guide cylinders are radially fixed on the support ring, and the sliding support rods are movably arranged in the corresponding fixed guide cylinders in a penetrating manner;
a clamping joint is fixed at the outer end of the sliding support rod, a clamping slot is arranged on the clamping joint, and the clamping slot is occluded on the fixing ring;
an axial anchor rod is arranged in the steel casing along the central line of the steel casing, and the inner ends of all the sliding support rods face and tightly abut against the axial anchor rod.
The effect is as follows: before hammering, the support ring, the radial telescopic piece and the steel casing are in a separated state; clear hole after beating into the rock with the vertical hammer of steel casing, transfer the support ring level to solid fixed ring department again, thereby insert the axial stock and promote the radial outward movement of slip vaulting pole, with joint slot and solid fixed ring grafting cooperation, can form the internal stay subassembly. Above structure neither influences the steel and protects a hammer and beat into the rock, can protect the interior subassembly that props of a formation type steel reinforcement cage at the steel again after going into the rock fast again to because interior subassembly that props is protected a fixed with the steel, more can improve the overall stability after the concreting.
Preferably, a plurality of reinforcing seats are arranged on the fixing ring in the circumferential direction, each reinforcing seat comprises two reinforcing plates which are arranged oppositely, the two reinforcing plates are fixedly connected with the fixing ring and the inner wall of the steel casing, and a clamping interface is formed between the two reinforcing plates;
the upper end face and the lower end face of the fixing ring are respectively provided with the reinforcing seat, a clamping area is formed by the clamping interface above the fixing ring and the clamping interface below the fixing ring in a one-to-one correspondence mode, the clamping area corresponds to the clamping head in a one-to-one correspondence mode, and the clamping head falls into the corresponding clamping area.
The effect of the above scheme is that, on one hand, the reinforcing seat plays a role in reinforcing the fixing ring; on the other hand, the clamping area is used for bearing the clamping joint, and the radial telescopic part of the clamping joint is prevented from reversing and rotating, so that the stability is improved.
Preferably, the reinforcing plate is a triangular plate, one right-angle edge of the reinforcing plate is fixedly connected with the end face of the fixing ring, the other right-angle edge of the reinforcing plate is fixedly connected with the inner wall of the steel casing, and the reinforcing plate is parallel to the axis of the steel casing. The triangle-shaped reinforcing plate of solid fixed ring below can also play the broken rock effect of certain degree in this scheme.
Preferably, the inner diameter of the steel casing is 800-1200mm, the diameter of the sliding support rod is 25-40mm, the number of the radial expansion pieces is eight, and the eight radial expansion pieces are circumferentially and uniformly distributed.
Preferably, the inner ends of all the sliding support rods are respectively provided with an abutting block, the side surface of the abutting block facing the axial anchor rod is provided with an arc abutting surface, and the arc abutting surface is attached to the outer wall of the axial anchor rod. The block and the arc of leaning on in this scheme lean on the face and be convenient for support tightly with the laminating of axial stock.
Preferably, any two opposite radial telescopic parts are pre-stretching parts, the remaining six radial telescopic parts are pre-shrinking parts, each radial telescopic part is provided with a pre-stressed spring, and the pre-stressed springs are sleeved on the corresponding sliding support rods;
wherein:
the prestressed spring on the pre-extension piece is positioned on the sliding support rod between the fixed guide cylinder and the clamping joint;
the pre-stressed spring on the pre-shrinking piece is positioned on the sliding support rod between the fixed guide cylinder and the abutting block.
By adopting the scheme, when the support ring is placed downwards, the two pre-stretching pieces are attached to the inner wall of the steel casing, so that the support ring is prevented from shaking, and the operation difficulty is reduced; the six pre-shrinking pieces are prevented from contacting the inner wall of the steel casing, so that the friction force is reduced.
Preferably, the clamping joint connected with the pre-stretching piece is an active clamping joint, and the clamping area corresponding to the active clamping joint is an active clamping area;
the driving clamping joints are respectively provided with an inclined wedge guide block, the inclined wedge guide blocks are fixed below the corresponding driving clamping joints, inclined wedge surfaces of the inclined wedge guide blocks face the inner wall of the steel casing, and the inclined wedge guide blocks are used for abutting against the fixing rings when the inner support assemblies are installed;
the inner wall that a section of thick bamboo was protected to the steel is equipped with two sets of supplementary installation mechanism, two sets of supplementary installation mechanism is just to setting up, two supplementary installation mechanism and two it corresponds to stretch in advance the piece, supplementary installation mechanism includes two supplementary lines, the one end of supplementary line is close to solid fixed ring, the other end of supplementary line is upwards kept away from gu fixed ring, two the lower extreme of supplementary line is close to each other and forms the switching mouth, and this switching mouth orientation corresponds initiative joint region, this switching mouth with gu fixed ring top the joint mouth butt joint, two the upper portion of supplementary line is kept away from gradually and is formed and transfer the interface, initiative joint head loops through transferring interface, the switching mouth gets into initiative joint region.
By adopting the technical scheme, the pre-stretching piece is attached to the inner wall of the steel protective cylinder and is lowered down, the active clamping head is restrained and guided through the auxiliary mounting mechanism and is close to the upper part of the corresponding active clamping area, the wedge surface of the wedge guide block is abutted against the edge of the inner ring of the fixing ring, the wedge surface of the wedge guide block and the edge of the inner ring of the fixing ring are matched to push the sliding support rod of the pre-stretching piece radially inwards, so that the active clamping head avoids the fixing ring, when the clamping slot on the active clamping head is aligned to the fixing ring, the active clamping head and the sliding support rod are pushed outwards radially under the action of the pre-stress spring, the clamping slot bites the fixing ring, the active clamping head and the fixing ring are assembled, and at the moment, the clamping slots on the other clamping heads are aligned to the fixing ring; and then inserting the axial anchor rod, pushing the sliding support rods of all the pre-shrinking pieces to push outwards in the radial direction, and enabling the clamping slots of all the clamping joints to be meshed with the fixing ring.
Preferably, a plurality of rock breaking plates are uniformly distributed on the inner wall of the steel casing below the inner support assembly in the circumferential direction, the rock breaking plates are parallel to the axis of the steel casing, the rock breaking plates are arranged along the diameter direction of the steel casing, the outer side edges of the rock breaking plates are fixed to the inner wall of the steel casing, and stepped rock breaking teeth are arranged on the lower edge of each rock breaking plate.
The rock breaking plate can enhance the rock breaking effect.
The outer diameter of the upper part of the axial anchor rod is large, the outer diameter of the lower part of the axial anchor rod is small, and the upper part and the lower part of the axial anchor rod are in linear transition.
The support ring comprises a plurality of support rods, the support rods are respectively arranged between any two adjacent radial telescopic pieces, and two ends of each support rod are respectively fixedly connected with the outer wall of the corresponding fixed guide cylinder;
and the notches of the clamping slots are provided with chamfers.
Has the advantages that: through the reasonable setting to a steel protects a section of thick bamboo, after going into the clear hole of rock, can make things convenient for quick protect the inside stable support chassis that forms of a section of thick bamboo at the steel, on the basis of simplifying later stage operation, also can keep the stability of concreting back steel-pipe pile.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic sectional structure view of the steel casing 1;
fig. 3 is a schematic view of the state that the inner support component 2 is in the steel casing 1 before the axial anchor rod 1 is inserted;
fig. 4 is a schematic view of the state of the pre-extension and pre-retraction members of fig. 3 on the support ring 21;
FIG. 5 is a cross-sectional view A-A' of FIG. 4;
FIG. 6 is a sectional view taken along line B-B' of FIG. 4;
fig. 7 is a schematic view of the state of the inner support assembly 2 in the steel casing 1 after the axial anchor rod 1 is inserted;
fig. 8 is a schematic structural view of the rock breaking plate 12;
FIG. 9 is a schematic structural diagram of a 30 ° rock breaking plate;
fig. 10 is a schematic structural diagram of a 45 ° rock breaking plate.
Detailed Description
The invention is further illustrated by the following examples and figures.
As shown in fig. 1 to 8, a steel pipe temporary support restraint system comprises a vertically arranged steel casing 1, wherein the inner diameter of the steel casing 1 is 800-1200mm, an internal support component 2 is arranged inside the steel casing 1, and the internal support component 2 is close to the bottom of the steel casing 1; the inner wall of the steel casing 1 below the inner support component 2 is annularly and uniformly distributed with a plurality of rock breaking plates 12, the rock breaking plates 12 are parallel to the axis of the steel casing 1, the rock breaking plates 12 are arranged along the diameter direction of the steel casing 1, the outer side edges of the rock breaking plates 12 are fixed with the inner wall of the steel casing 1, and the rock breaking plates 12 are provided with stepped rock breaking teeth.
Specifically, the method comprises the following steps: the structure of the inner support component 2 is as follows:
the inner support assembly 2 comprises a support ring 21 and a fixing ring 24, the support ring 21 and the fixing ring 24 are coaxially arranged with the steel casing 1, the outer ring of the fixing ring 24 is fixedly connected with the inner wall of the steel casing 1, and the support ring 21 is located in the range of the inner ring of the fixing ring 24;
at least three radial telescopic pieces are circumferentially distributed on the support ring 21, each radial telescopic piece comprises a fixed guide cylinder 22 and a sliding support rod 23, the fixed guide cylinders 22 are radially fixed on the support ring 21, the sliding support rods 23 are movably arranged in the corresponding fixed guide cylinders 22 in a penetrating manner, the diameter of each sliding support rod 23 is 25-40mm, the number of the radial telescopic pieces is eight, and the eight radial telescopic pieces are circumferentially and uniformly distributed; the support ring 21 comprises a plurality of support rods, the support rods are respectively arranged between any two adjacent radial telescopic pieces, and two ends of each support rod are respectively fixedly connected with the outer wall of the corresponding fixed guide cylinder 22;
An axial anchor rod 11 is arranged in the steel casing 1 along the central line of the steel casing, the outer diameter of the upper part of the axial anchor rod 11 is large, the outer diameter of the lower part of the axial anchor rod 11 is small, the upper part and the lower part of the axial anchor rod 11 are in linear transition, the axial anchor rod 11 is inserted into the steel casing 1 from top to bottom, and the inner ends of all the sliding support rods 23 face the axial anchor rod 11; an arc-shaped abutting surface is arranged on the side surface of the abutting block 23a facing the axial anchor rod 11, and the arc-shaped abutting surface is abutted with the outer wall of the upper part of the axial anchor rod 11, so that all the clamping joints 25 are pressed on the inner wall of the steel casing 1.
In order to improve the stability and the strength of the fixing ring 24, a plurality of reinforcing seats 26 are circumferentially arranged on the fixing ring 24, each reinforcing seat 26 comprises two reinforcing plates which are arranged oppositely, the two reinforcing plates are fixedly connected with the fixing ring 24 and the inner wall of the steel casing 1, and a clamping interface is formed between the two reinforcing plates;
the reinforcing seats 26 are respectively arranged on the upper end face and the lower end face of the fixing ring 24, a clamping area is formed by one-to-one correspondence of a clamping interface above the fixing ring 24 and a clamping interface below the fixing ring, the clamping area corresponds to the clamping joints 25 one-to-one, and the clamping joints 25 fall into the corresponding clamping area;
specifically, the reinforcing plate is the triangle-shaped board, its one right-angle side with the terminal surface fixed connection of solid fixed ring 24, another right-angle side with the steel protects an inner wall fixed connection of 1, the reinforcing plate is on a parallel with the axis setting of a section of thick bamboo 1 is protected to the steel.
In order to facilitate installation and downward placement, any two opposite radial telescopic pieces are pre-stretching pieces, the remaining six radial telescopic pieces are pre-shrinking pieces, each radial telescopic piece is provided with a pre-stressed spring 27, and the pre-stressed springs 27 are sleeved on the corresponding sliding support rods 23;
wherein:
the pre-stress spring 27 on the pre-extension piece is positioned on the sliding support rod 23 between the fixed guide cylinder 22 and the clamping joint 25;
the pre-stressing spring 27 on the pre-shrinking piece is located on the sliding stay 23 between the fixed guide cylinder 22 and the abutment block 23 a.
The clamping joint 25 connected with the pre-stretching piece is an active clamping joint, and the clamping area corresponding to the active clamping joint is an active clamping area;
the driving clamping joints are respectively provided with a wedge guide block 28, the wedge guide blocks 28 are fixed below the corresponding driving clamping joints, the wedge surfaces of the wedge guide blocks 28 face the inner wall of the steel casing 1, and the wedge guide blocks 28 are used for abutting against the fixing ring 24 when the inner support assembly 2 is installed;
the inner wall that a section of thick bamboo 1 was protected to the steel is equipped with two sets of supplementary installation mechanism, two sets of supplementary installation mechanism is just to setting up, two supplementary installation mechanism and two it corresponds to stretch in advance the piece, supplementary installation mechanism includes two supplementary lines 13, the one end of supplementary lines 13 is close to solid fixed ring 24, the other end of supplementary lines 13 upwards keeps away from gu fixed ring 24, two the lower extreme of supplementary lines 13 is close to each other and forms the switching mouth, and this switching mouth orientation corresponds initiative joint region, this switching mouth with gu fixed ring 24 top the joint mouth butt joint, two the upper portion of supplementary lines 13 is kept away from gradually and is formed and transfer the interface, initiative joint head loops through transferring interface, the switching mouth gets into initiative joint region.
The assembly process of the solution of the invention has been described previously and will not be described further here. And after the assembly is completed, concrete is injected into the steel casing for vibration and maintenance, and the steel pipe pile with the temporary supporting function can be formed.
For better promotion broken rock effect, increase the rock depth of entrying, broken rock plate 12 structure is as follows:
the rock breaking teeth comprise a first-stage rock breaking tooth 12a, a second-stage rock breaking tooth 12b, a third-stage rock breaking tooth 12c and a fourth-stage rock breaking tooth 12d which are sequentially arranged in parallel from bottom to top, wherein the first-stage rock breaking tooth 12a is in a right-angled triangle shape, the second-stage rock breaking tooth 12b and the third-stage rock breaking tooth 12c are in a right-angled trapezoid shape, and the fourth-stage rock breaking tooth 12d is in a rectangular shape;
one right-angle side of the first-stage rock breaking tooth 12a is connected with the shorter bottom side of the second-stage rock breaking tooth 12b, the longer bottom side of the second-stage rock breaking tooth 12b is connected with the shorter bottom side of the third-stage rock breaking tooth 12c, and the longer bottom side of the third-stage rock breaking tooth 12c is connected with the lower side of the fourth-stage rock breaking tooth 12 d;
one vertical side edge of the fourth-level rock breaking tooth is aligned and positioned on the same vertical line, and forms the outer side edge of the rock breaking plate 12;
the included angle between the bevel edge of the first-stage rock breaking tooth 12a and the vertical line is alpha, the included angle between the inclined waist of the second-stage rock breaking tooth 12b and the vertical line is beta, the included angle between the inclined waist of the third-stage rock breaking tooth 12c and the vertical line is gamma, and alpha is more than beta and less than gamma.
Specifically, when the alpha, the beta and the gamma meet the following conditions, the rock breaking effect is better: alpha is 15-20 degrees, beta is 30-35 degrees and gamma is 40-50 degrees.
Meanwhile, the side length of the shorter bottom edge of the third-level rock breaking tooth 12c is 3-5cm larger than that of the longer bottom edge of the second-level rock breaking tooth 12b, and the side length of the shorter bottom edge of the second-level rock breaking tooth 12b is 3-5cm larger than that of the right-angle side of the first-level rock breaking tooth 12a connected with the second-level rock breaking tooth; the side length of the longer bottom edge of the third-level rock breaking tooth 12c is 3-5cm smaller than that of the side edge of the fourth-level rock breaking tooth 12d connected with the third-level rock breaking tooth.
The first-stage rock breaking tooth 12a, the second-stage rock breaking tooth 12b, the third-stage rock breaking tooth 12c and the fourth-stage rock breaking tooth 12d are integrally formed to form the rock breaking plate 12.
For comparison, two kinds of 30-degree rock breaking plates and 45-degree rock breaking plates are tried in construction, wherein: the 30-degree rock breaking plate comprises a first rectangular upper plate and a first triangular lower plate which are parallel to each other, the first rectangular upper plate is positioned above the first triangular lower plate, the lower edge of the first rectangular upper plate is connected with a right-angle side of the first triangular lower plate, the lengths of the connecting sides of the first rectangular upper plate and the first triangular lower plate are equal, and the included angle between the inclined side of the first triangular lower plate and a vertical line is 30 degrees, as shown in fig. 9;
the 45-degree rock breaking plate comprises a second rectangular upper plate and a second triangular lower plate which are parallel to each other, the second rectangular upper plate is located above the second triangular lower plate, the lower edge of the second rectangular upper plate is connected with a right-angle side of the second triangular lower plate, the lengths of the connecting sides of the second rectangular upper plate and the second triangular lower plate are equal, and the included angle between the inclined side of the second triangular lower plate and a vertical line is 45 degrees, as shown in figure 10.
The 30-degree rock breaking plate, the 45-degree rock breaking plate and the rock breaking plate 12 in the application are respectively welded on the inner wall of the steel casing, and the materials, the number of pieces, the thickness, the installation mode and the orientation of the three are basically consistent. The steel pile casing is hammered by the same pile driver on the same construction site (same rock foundation), and the discovery is that: when a 30-degree rock breaking plate is used for initial hammering, the rock entering speed is high, but when the rock enters a certain rock entering depth, hammering is difficult, the rock entering speed is low, and the rock entering depth is influenced; the rock-entering depth of the 45-degree rock-breaking plate is relatively deep, but the rock-entering speed is relatively slow during hammering.
When the rock breaking plate 12(α ═ 17 °, β ═ 34 °, γ ═ 45 °) is hammered, the rock entering speed is fast and stable, and the rock entering depth is greatly increased; when the same rock penetration depth is achieved, the rock breaking plate 12 can save 30-38% of the in-place time compared with a 30-degree rock breaking plate and a 45-degree rock breaking plate; in the same hammering time, the rock breaking plate 12 can increase the rock penetration depth by 10-35% compared with a 30-degree rock breaking plate and a 45-degree rock breaking plate.
Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a steel pipe temporary support restraint system which characterized in that: the steel pile casing comprises a vertically arranged steel pile casing (1), wherein an inner support assembly (2) is arranged inside the steel pile casing (1), and the inner support assembly (2) is close to the bottom of the steel pile casing (1);
the inner support assembly (2) comprises a support ring (21) and a fixing ring (24), the support ring (21) and the fixing ring (24) are coaxially arranged with the steel casing (1), the outer ring of the fixing ring (24) is fixedly connected with the inner wall of the steel casing (1), and the support ring (21) is located in the range of the inner ring of the fixing ring (24);
at least three radial telescopic pieces are circumferentially distributed on the support ring (21), each radial telescopic piece comprises a fixed guide cylinder (22) and a sliding support rod (23), each fixed guide cylinder (22) is radially fixed on the support ring (21), and each sliding support rod (23) is movably arranged in the corresponding fixed guide cylinder (22) in a penetrating manner;
a clamping joint (25) is fixed at the outer end of the sliding support rod (23), a clamping slot (25a) is formed in the clamping joint (25), and the clamping slot (25a) is occluded on the fixing ring (24);
an axial anchor rod (11) is arranged in the steel casing (1) along the central line of the steel casing, and the inner ends of all the sliding support rods (23) face and tightly abut against the axial anchor rod (11).
2. The steel pipe temporary support restraint system of claim 1, characterized in that: a plurality of reinforcing seats (26) are arranged on the fixing ring (24) in the circumferential direction, each reinforcing seat (26) comprises two reinforcing plates which are arranged oppositely, the two reinforcing plates are fixedly connected with the fixing ring (24) and the inner wall of the steel casing (1), and a clamping interface is formed between the two reinforcing plates;
the up end and the lower terminal surface of solid fixed ring (24) are equipped with respectively strengthen seat (26), just the joint mouth one-to-one of solid fixed ring (24) top and the joint mouth one-to-one of below forms a joint region, the joint region with joint head (25) one-to-one, joint head (25) fall on and correspond in the joint region.
3. The steel pipe temporary support restraint system of claim 2, characterized in that: the reinforcing plate is a triangular plate, one right-angle side of the reinforcing plate is fixedly connected with the end face of the fixing ring (24), the other right-angle side of the reinforcing plate is fixedly connected with the inner wall of the steel protection cylinder (1), and the reinforcing plate is parallel to the axis of the steel protection cylinder (1).
4. The steel pipe temporary support restraint system according to claim 2 or 3, characterized in that: the inner diameter of the steel casing (1) is 800-1200mm, the diameter of the sliding support rod (23) is 25-40mm, the number of the radial telescopic pieces is eight, and the eight radial telescopic pieces are circumferentially and uniformly distributed.
5. The steel pipe temporary support restraint system of claim 4, characterized in that: the inner ends of all the sliding support rods (23) are respectively provided with an abutting block (23a), the abutting block (23a) faces the side face of the axial anchor rod (11) and is provided with an arc abutting face, and the arc abutting face is attached to the outer wall of the axial anchor rod (11).
6. The steel pipe temporary support restraint system of claim 5, characterized in that: any two opposite radial telescopic pieces are pre-stretching pieces, the remaining six radial telescopic pieces are pre-shrinking pieces, each radial telescopic piece is provided with a pre-stressed spring (27), and the pre-stressed springs (27) are sleeved on the corresponding sliding support rods (23);
wherein:
the pre-stress spring (27) on the pre-extension piece is positioned on the sliding support rod (23) between the fixed guide cylinder (22) and the clamping joint (25);
the pre-stressing spring (27) on the pre-shrinking piece is positioned on the sliding support rod (23) between the fixed guide cylinder (22) and the abutting block (23 a).
7. The steel pipe temporary support restraint system of claim 6, characterized in that: the clamping joint (25) connected with the pre-stretching piece is an active clamping joint, and the clamping area corresponding to the active clamping joint is an active clamping area;
the driving clamping joint is provided with an inclined wedge guide block (28) respectively, the inclined wedge guide block (28) is fixed below the corresponding driving clamping joint, an inclined wedge surface of the inclined wedge guide block (28) faces to the inner wall of the steel casing (1), and the inclined wedge guide block (28) is abutted to the fixing ring (24) when the inner support component (2) is installed;
the inner wall that a section of thick bamboo (1) was protected to the steel is equipped with two sets of supplementary installation mechanism, two sets supplementary installation mechanism is just to setting up, two supplementary installation mechanism and two it corresponds to stretch in advance the piece, supplementary installation mechanism includes two auxiliary lines (13), the one end of auxiliary lines (13) is close to solid fixed ring (24), the other end of auxiliary lines (13) upwards keeps away from gu fixed ring (24), two the lower extreme of auxiliary lines (13) is close to each other and forms the switching mouth, and this switching mouth orientation corresponds initiative joint region, this switching mouth with gu fixed ring (24) top the joint mouth butt joint, two the upper portion of auxiliary lines (13) is kept away from gradually and is formed and is transferred the interface, initiative joint loops through transferring the interface, the switching mouth gets into initiative joint region.
8. The steel pipe temporary support restraint system according to claim 1, 2 or 3, characterized in that: the utility model discloses a rock breaking device, including inner support subassembly (2), broken rock plate (12) and steel protect the inner wall hoop evenly distributed of a section of thick bamboo (1) and have a plurality of broken rock plates (12), broken rock plate (12) with the axis of a section of thick bamboo (1) is parallel protected to the steel, broken rock plate (12) are followed the diameter direction setting of a section of thick bamboo (1) is protected to the steel, the outside limit of broken rock plate (12) with the inner wall of a section of thick bamboo (1) is fixed, the lower limb of broken rock plate (12) is equipped with the broken rock tooth of echelonment.
9. The steel pipe temporary support restraint system according to claim 1, 2 or 3, characterized in that: the outer diameter of the upper part of the axial anchor rod (11) is large, the outer diameter of the lower part of the axial anchor rod is small, and the upper part and the lower part of the axial anchor rod (11) are in linear transition.
10. The steel pipe temporary support restraint system according to claim 1, 2 or 3, characterized in that: the support ring (21) comprises a plurality of support rods, the support rods are respectively arranged between any two adjacent radial telescopic pieces, and two ends of each support rod are respectively fixedly connected with the outer wall of the corresponding fixed guide cylinder (22);
and the notches of all the clamping slots (25a) are provided with chamfers.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010959033.4A CN112081101B (en) | 2020-09-14 | 2020-09-14 | Steel pipe temporary support restraint system |
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| CN202010959033.4A CN112081101B (en) | 2020-09-14 | 2020-09-14 | Steel pipe temporary support restraint system |
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| CN112081101A CN112081101A (en) | 2020-12-15 |
| CN112081101B true CN112081101B (en) | 2021-10-19 |
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| CN205475207U (en) * | 2016-02-02 | 2016-08-17 | 中建筑港集团有限公司 | A construction equipment is pour to exposed basement rock or shallow overburden basement rock |
| JP2018178382A (en) * | 2017-04-04 | 2018-11-15 | 東亜建設工業株式会社 | Method of driving pile to bedrock |
| CN111395169A (en) * | 2020-03-13 | 2020-07-10 | 中铁上海工程局集团有限公司 | Construction method of deepwater steel trestle bored pile |
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2020
- 2020-09-14 CN CN202010959033.4A patent/CN112081101B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936894A (en) * | 2012-11-27 | 2013-02-20 | 中铁上海工程局有限公司第五分公司 | Method for anchoring small-diameter cast-in-place pile and bed rock |
| CN102979089A (en) * | 2012-12-13 | 2013-03-20 | 中铁上海工程局第二工程有限公司 | Steel pipe pile anchoring structure on covering-free steep bare rock in deepwater and rapid stream |
| CN102979069A (en) * | 2012-12-13 | 2013-03-20 | 中铁上海工程局第二工程有限公司 | Bored pile platform construction method on covering-free steep bare rock in deepwater and rapid stream |
| CN205475207U (en) * | 2016-02-02 | 2016-08-17 | 中建筑港集团有限公司 | A construction equipment is pour to exposed basement rock or shallow overburden basement rock |
| JP2018178382A (en) * | 2017-04-04 | 2018-11-15 | 東亜建設工業株式会社 | Method of driving pile to bedrock |
| CN111395169A (en) * | 2020-03-13 | 2020-07-10 | 中铁上海工程局集团有限公司 | Construction method of deepwater steel trestle bored pile |
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