Liftable multi-layer guide frame steel casing impact guide hole anchoring system

Abstract

The utility model relates to a lifting type multi-layer guide frame steel casing impact guide hole anchoring system which comprises an initial platform anchoring structure, a cantilever truss structure and a lifting type multi-layer guide frame steel casing installation structure. The initial platform anchoring structure comprises initial platform steel pipe columns and an initial platform; the initial platform is arranged on the initial platform steel pipe columns; the side edge of the initial platform is connected with a lifting type multi-layer guide frame steel casing installation structure through a cantilever truss structure. The guide platform has the advantages that the center of the guide platform is provided with the guide hole for the steel casing to penetrate through, and each layer of guide platform is symmetrically provided with the steel casing deviation rectifying device, so that the construction efficiency of on-site steel casing installation, drilling and the like can be greatly improved, the pile forming quality of a steel pipe pile can be improved, and the construction period is shortened. And reworking and maintenance caused by the construction quality problem are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to pile foundation engineering technical field especially including a liftable multilayer guide frame steel casing impact hole guide anchoring system. BACKGROUND

[0002] In bridge construction, especially the construction of bridges in water, a stable foundation structure needs to be established. Steel trestle is an important traffic mode, and its support pier often adopts steel pipe pile. The accurate installation of steel casing is crucial for the subsequent construction of steel pipe pile, which can protect the hole wall, prevent hole collapse, and ensure construction safety and quality. For some large bridge projects such as river-crossing and sea-crossing bridges, due to the complex geological conditions such as high-strength hard rock in shallow overburden riverbed and other adverse geology, it is difficult to directly hammer the steel pipe pile into the hard bedrock according to the conventional method, and the pile sinking is difficult and has poor stability. Therefore, a more effective hole guide and anchoring system is needed to ensure the stable insertion of the steel pipe pile, and the new steel casing impact hole guide anchoring system is a more effective measure to solve this problem. SUMMARY

[0003] The utility model aims at overcoming the deficiency in prior art, and provides a liftable multilayer guide frame steel casing impact hole guide anchoring system.

[0004] The liftable multilayer guide frame steel casing impact hole guide anchoring system comprises an initial platform anchoring structure, a cantilever truss structure and a liftable multilayer guide frame steel casing installation structure. The initial platform anchoring structure comprises an initial platform steel pipe column and an initial platform. The initial platform is arranged on the initial platform steel pipe column. The side edge of the initial platform is connected to the liftable multilayer guide frame steel casing installation structure through the cantilever truss structure. The liftable multilayer guide frame steel casing installation structure comprises a plurality of guide platforms. The adjacent guide platforms are provided with telescopic rods. The guide platforms are used for the penetration and setting of the steel casing. The guide platforms are provided with a steel casing deviation rectifying device.

[0005] Preferably, the initial platform anchoring structure comprises an initial platform steel pipe column, an initial platform anchoring steel reinforcement cage, initial platform anchoring concrete, a connecting rod and an initial platform. The bottom end of the initial platform steel pipe column is inserted into the bedrock. There is a shallow overburden layer above the bedrock. The initial platform anchoring steel reinforcement cage is arranged in the initial platform steel pipe column. The initial platform anchoring concrete is poured in the initial platform steel pipe column. The pouring height of the initial platform anchoring concrete is higher than that of the shallow overburden layer. The adjacent initial platform steel pipe columns are provided with the connecting rod. The initial platform is arranged on the upper part of the connecting rod.

[0006] Preferably, the cantilever truss structure comprises a plurality of cantilever cross beams, cantilever support vertical rods and cantilever support inclined rods. The initial platform is welded with the cantilever cross beam on one side of the upper part of the initial platform steel pipe column. The adjacent two layers of cantilever cross beams are provided with the cantilever support vertical rods and the cantilever support inclined rods.

[0007] As preferred, the liftable multi-layer guide frame steel casing installation structure is connected to one side of the initial platform steel pipe column through the cantilever beam, and the guide platform is provided with a guide platform guardrail around.

[0008] As preferred, the guide platform center is provided with a guide hole for the steel casing to penetrate, a plurality of steel casing deviation correction devices are symmetrically installed on each layer of the guide platform, a vibration hammer is arranged on the upper part of the steel casing, and the anchor fine stone concrete is poured into the steel casing, and the top surface of the anchor fine stone concrete is flush with the upper surface of the shallow cover layer.

[0009] The utility model has the advantages of:

[0010] 1) the utility model discloses a liftable multi-layer guide frame steel casing impact hole anchor system, including multi-layer guide platform, the guide platform center is provided with a guide hole for the steel casing to penetrate, and a plurality of steel casing deviation correction devices are symmetrically installed on each layer of the guide platform, which can greatly improve the construction efficiency of the on-site steel casing installation and drilling, thereby helping to improve the piling quality of the steel pipe pile and reduce the rework and maintenance caused by construction quality problems.

[0011] 2) the utility model discloses a liftable multi-layer guide frame, and the guide platform is connected through the telescopic rod, and the telescopic rod can be retracted when transporting and on-site hoisting, so that the multi-layer guide platform is attached together, the occupied space during transportation is greatly reduced, and the on-site hoisting is facilitated.

[0012] 3) the utility model discloses an initial platform anchor structure, which is connected with the liftable multi-layer guide frame structure through the cantilever truss structure, improves the stability of the structure, and effectively guarantees the smooth construction of the pile foundation steel casing. DRAWINGS

[0013] Fig. 1 It is an initial platform anchor and liftable multi-layer guide frame steel casing installation structure schematic diagram.

[0014] Fig. 2 It is a steel casing installation and vibration hammer hammering steel casing structure schematic diagram.

[0015] Fig. 3 It is an impact drill in the steel casing impact operation structure schematic diagram.

[0016] Fig. 4 It is a steel casing pouring anchor concrete structure schematic diagram.

[0017] BRIEF DESCRIPTION OF DRAWINGS 1 - shallow overburden, 2 - bedrock, 3 - initial platform steel pipe column, 4 - initial platform anchoring steel reinforcement cage, 5 - initial platform anchoring concrete, 6 - first connecting rod, 7 - second connecting rod, 8 - initial platform, 9 - cantilever beam, 10 - cantilever support vertical pole, 11 - cantilever support inclined pole, 12 - first layer guide platform, 13 - second layer guide platform, 14 - third layer guide platform, 15 - lower telescopic rod, 16 - upper telescopic rod, 17 - steel casing correction device, 18 - first layer guide platform guardrail, 19 - second layer guide platform guardrail, 20 - third layer guide platform guardrail, 21 - steel casing, 22 - vibrating hammer, 23 - impact drill, 24 - anchoring fine stone concrete. DETAILED DESCRIPTION

[0018] The utility model will be further described below in combination with examples. The following examples are only used to help understand the utility model. It should be pointed out that for ordinary people in this technical field, without departing from the principle of the utility model, the utility model can be modified, and these improvements and modifications also fall within the protection scope of the utility model claims.

[0019] As an example, as shown in the figure, the liftable multilayer guide frame steel casing impact hole anchor system comprises: an initial platform anchoring structure, a cantilever truss structure and a liftable multilayer guide frame steel casing installation structure; the initial platform anchoring structure comprises an initial platform steel pipe column 3 and an initial platform 8; the initial platform 8 is arranged on the initial platform steel pipe column 3; the side edge of the initial platform 8 is connected with the liftable multilayer guide frame steel casing installation structure through the cantilever truss structure; the liftable multilayer guide frame steel casing installation structure comprises a plurality of guide platforms, telescopic rods are arranged between adjacent guide platforms, the guide platforms are used for the penetration of the steel casing 21, and the guide platforms are provided with a steel casing correction device 17. Figs. 1 to 4 The initial platform anchoring structure is passed through the shallow overburden 1 by the impact drill 23, the bedrock 2 is drilled after the position is positioned, the initial platform steel pipe column 3 is installed, the initial platform anchoring steel reinforcement cage 4 is hoisted in the initial platform steel pipe column 3, then the initial platform anchoring concrete 5 is poured, the pouring height of the initial platform anchoring concrete 5 is slightly higher than the upper surface of the shallow overburden 1, the adjacent initial platform steel pipe columns 3 are connected by the first connecting rod 6 and the second connecting rod 7, and the initial platform 8 is installed on the upper portion of the second connecting rod 7.

[0020] The cantilever truss structure comprises: two layers of cantilever beams 9 are welded on the initial platform steel pipe column 3 by the initial platform 8, and a cantilever support vertical pole 10 and a cantilever support inclined pole 11 are welded between the two layers of cantilever beams 9.

[0021]

[0022] ​The installation structure of the liftable multi-layer guide frame steel casing includes: first, adjusting the height of the lower telescopic rod 15 of the liftable multi-layer guide frame structure so that the liftable multi-layer guide frame structure and the two layers of cantilever beams 9 are welded together at corresponding positions; then, adjusting the upper telescopic rod 16 upwards; and installing the first-layer guide platform guardrail 18, the second-layer guide platform guardrail 19, and the third-layer guide platform guardrail 20 on the first-layer guide platform 12, the second-layer guide platform 13, and the third-layer guide platform 14 respectively; then, hoisting the steel casing 21 into the liftable multi-layer guide frame; and using the steel casing for correction... The offset device 17 precisely adjusts the position and verticality of the steel casing 21, and then lowers the steel casing 21. The vibratory hammer 22 hammers the steel casing 21 to the bedrock 2 position. The impact drill 23 arranged on the initial platform 8 uses the liftable multi-layer guide frame to perform drilling operations inside the steel casing 21, and the steel casing 21 gradually follows and embeds into the bedrock 2. After the following depth meets the requirements, the anchoring fine stone concrete 24 is poured through the tremie method to the upper surface of the shallow overburden 1. The steel casing 21 is anchored and after the anchoring fine stone concrete 24 reaches the design strength, the impact drill 23 is removed and the liftable multi-layer guide frame is dismantled.

[0023] The liftable multi-layer guide frame structure includes: a first-layer guide platform 12 and a second-layer guide platform 13, which are connected by a lower telescopic rod 15. The length of the lower telescopic rod 15 is adjusted to connect with the two cantilever beams 9 on the right side. The second-layer guide platform 13 and the third-layer guide platform 14 are connected by an upper telescopic rod 16. The multi-layer guide frame can be lifted by adjusting the lengths of the lower telescopic rod 15 and the upper telescopic rod 16. Several steel protective cylinder correction devices 17 are symmetrically installed on each guide platform.

Claims

1. A liftable multi-layer guide frame steel casing impact pre-hole anchoring system, characterized in that, include: The system comprises an initial platform anchoring structure, a cantilever truss structure, and a liftable multi-layer guide frame steel casing installation structure. The initial platform anchoring structure includes an initial platform steel pipe column and an initial platform. The initial platform is mounted on the initial platform steel pipe column. The side of the initial platform is connected to the liftable multi-layer guide frame steel casing installation structure via a cantilever truss structure. The liftable multi-layer guide frame steel casing installation structure includes several layers of guide platforms, with telescopic rods between adjacent guide platforms. The guide platforms are used for the penetration and installation of the steel casing, and the guide platforms are equipped with steel casing correction devices.

2. The liftable multi-layer guide frame steel casing impact pre-hole anchoring system according to claim 1, characterized in that, The initial platform anchoring structure includes: initial platform steel pipe columns, initial platform anchoring steel cages, initial platform anchoring concrete, connecting rods, and the initial platform. The bottom end of the initial platform steel pipe columns is inserted into the bedrock, which is covered by a shallow overburden layer. The initial platform anchoring steel cage is installed inside the initial platform steel pipe columns, and initial platform anchoring concrete is poured inside the initial platform steel pipe columns. The pouring height of the initial platform anchoring concrete is higher than that of the shallow overburden layer. Connecting rods are provided between adjacent initial platform steel pipe columns, and the initial platform is installed on the upper part of the connecting rods.

3. The liftable multi-layer guide frame steel casing impact pre-hole anchoring system according to claim 1, characterized in that, The cantilever truss structure includes: multi-layer cantilever beams, cantilever support verticals, and cantilever support diagonal members; the initial platform has cantilever beams welded to one side of the upper part of the initial platform steel pipe columns, and cantilever support verticals and cantilever support diagonal members are provided between adjacent layers of cantilever beams.

4. The liftable multi-layer guide frame steel casing impact pre-hole anchoring system according to claim 1, characterized in that, The liftable multi-layer guide frame steel casing installation structure is connected to one side of the initial platform steel pipe column through a cantilever beam, and the guide platform is equipped with protective railings around its perimeter.

5. The liftable multi-layer guide frame steel casing impact pre-hole anchoring system according to claim 1, characterized in that, The guide platform has a guide hole in the center for the steel casing to pass through. Several steel casing correction devices are symmetrically installed on each guide platform. A vibratory hammer is installed on the upper part of the steel casing. The steel casing is filled with anchoring fine stone concrete. The top surface of the anchoring fine stone concrete is flush with the upper surface of the shallow cover layer.

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