Bridge permanent steel casing integrated pile penetrating through existing high-speed line roadbed

Abstract

The utility model relates to a bridge permanent steel casing integrated pile penetrating through an existing high-speed line roadbed. An assembly type verticality adjusting support is arranged on a reinforced concrete hardened layer on the outer side of an I-shaped steel buttress. A perpendicularity adjusting jack used for perpendicularity adjusting of the permanent steel casing of the inner side pier column is arranged in the assembly type perpendicularity adjusting support, and the I-shaped steel buttress is supported below the perpendicularity adjusting jack. The perpendicularity adjusting jack has the advantages that the perpendicularity adjusting jack is supported through the reusable I-shaped steel buttress, the I-shaped steel buttress is simple in structure, common in used material and high in operation convenience; the assembly type perpendicularity adjusting support is matched with the upper laser inclinometer pipe and the perpendicularity adjusting jack to adjust perpendicularity of the permanent steel casing of the inner side pier column in the construction process, construction convenience is high, construction errors are small, and it can be ensured that the construction precision of the integrated pile column meets the standard requirement.

Description

Technical Field

[0001] The utility model relates to the field of bridge construction, in particular to a permanent steel casing integrated pile column of a bridge passing through the subgrade of an existing expressway line. Background Technique

[0002] With the development of the comprehensive transportation system, the urban road network continues to extend outwards, and the problems of connection and intersection between roads are becoming more and more common. Existing expressways often become obstacles that block the extension of the urban road network and hinder the connection and communication between the two sides of the urban area. Excavating the subgrade of the existing expressway and transforming the highway into a bridge, namely the "road-to-bridge scheme", is one of the main ways for urban roads to pass under the existing expressway. In the road-to-bridge scheme, in order to improve the construction efficiency and reduce the excavation support, the lower structure of the bridge often uses an integrated pile column for construction. However, the construction steps of the traditional bridge integrated pile column are cumbersome, and during the construction process, problems such as long construction period, difficult construction precision control, difficult quality assurance, and low utilization rate of on-site materials are often faced.

[0003] Therefore, it is of great significance to study the permanent steel casing integrated pile column of the bridge passing through the subgrade of the existing expressway line. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a permanent steel casing integrated pile column of a bridge passing through the subgrade of an existing expressway line.

[0005] This permanent steel casing integrated pile column of a bridge passing through the subgrade of an existing expressway line includes an outer steel casing. A reinforced concrete hardening layer is poured on the ground around the outer steel casing, and I-shaped steel piers are arranged around the outer steel casing on the reinforced concrete hardening layer; an assembled plumb bob support is arranged on the reinforced concrete hardening layer outside the I-shaped steel piers; a plumb bob jack for plumb bob adjustment of the permanent steel casing of the inner pier column is arranged inside the assembled plumb bob support, and the I-shaped steel pier is supported below the plumb bob jack;

[0006] The permanent steel casing of the inner pier column is sunk into the outer steel casing. Hydraulic jacks that support against the inner wall of the outer steel casing are arranged circumferentially on the outer ring of the permanent steel casing of the inner pier column, and a pile-column integrated concrete pouring steel working platform device is erected above the outer steel casing.

[0007] Preferably, a mud ditch is reserved outside the reinforced concrete hardening layer. Steel connecting plates are fixed on the surface of the reinforced concrete hardening layer through embedded steel bars, and I-shaped steel piers are welded and fixed on the steel connecting plates; a dense bulk material is filled between the outer steel casing and the reinforced concrete hardening layer; four I-shaped steel piers are symmetrically arranged along the cross axis of the pile foundation.

[0008] Preferably, the assembled vertical adjustment support includes longitudinal steel members and transverse steel members. The assembled vertical adjustment support is fixed on the reinforced concrete hardening layer. Four vertical adjustment jacks are fixedly arranged on the assembled vertical adjustment support along the cross axis direction of the pile foundation. During the sinking construction of the permanent steel casing of the inner pier column, a laser inclinometer tube is suspended inside the permanent steel casing of the inner pier column; an arc contact steel plate is arranged at the top of the vertical adjustment jack according to the radian of the outer wall of the permanent steel casing of the inner pier column, and the vertical adjustment jack is supported on an I-beam pier.

[0009] Preferably, sand and stone granular materials are arranged around the permanent steel casing of the inner pier column.

[0010] Preferably, four groups of hydraulic jacks are arranged along the periphery of the permanent steel casing of the inner pier column along the cross axis direction. An arc steel plate is arranged at one end of the hydraulic jack, and the arc steel plate is attached to the inner wall of the outer steel casing; the hydraulic jack is connected with a PLC synchronous hydraulic control system.

[0011] Preferably, the integrated concrete pouring steel operation platform device for pile columns includes an upper operation steel platform and a lower support structure. Protective fences are arranged around the upper operation steel platform. Checkered steel plates are laid on the operation steel platform and pouring pipeline holes are reserved for fixing the conduits; a ladder is arranged on the side of the operation steel platform for workers to go up and down the platform for operation; the lower support structure includes platform steel feet and steel members. The four platform steel feet are connected by steel members. Steel trusses are arranged between the steel members. The platform steel feet are fixedly connected to the ground through base steel plates at the bottom, and the top of the platform steel feet is fixedly connected to the operation steel platform through a flange structure and bolts.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1) By using the reusable I-beam piers to support the vertical adjustment jacks, the I-beam piers of the present utility model have a simple structure, common materials, and high operation convenience. After the construction is completed, the I-beam piers can be removed for reuse, reducing the waste of resources at the construction site and improving the construction efficiency.

[0014] 2) During the construction process, the assembled vertical adjustment support of the present utility model is used in cooperation with the laser inclinometer tube and the vertical adjustment jacks to adjust the verticality of the permanent steel casing of the inner pier column. The construction is highly convenient and the construction error is small, which can ensure that the construction accuracy of the integrated pile column meets the specification requirements.

[0015] 3) Sand and stone granular materials are sunk around the permanent steel casing of the pier column of the present utility model, reducing the construction difficulty during the later excavation of the soil around the permanent steel casing of the pier column, improving the construction efficiency, and the granular materials are easy to clean when attached to the surface of the permanent steel casing of the pier column and will not cause damage to the permanent steel casing of the pier column.

[0016] 4) In the present utility model, hydraulic jacks are arranged in the cross-axis direction of the permanent steel casing of the pier column, which are used to cooperate with the plumb jacks at the orifice to synchronously adjust the verticality of the permanent steel casing of the inner pier column from different positions above and below during the sinking process, so that the plumb construction accuracy is high, the overall construction efficiency is improved, and the verticality of the permanent steel casing of the inner pier column is ensured to meet the requirements of the specification design.

[0017] 5) The present utility model proposes a steel operation platform device for integrated concrete pouring of pile columns. A steel operation platform for concrete pouring is arranged directly above the steel casing to solve the problem of insufficient operation space for workers during the pouring process, and the pouring conduit is fixed by using the pouring pipe holes on the platform to avoid the collision between the conduit and the steel pipe column due to the vibration of the conduit during the concrete pouring process, ensuring the accurate positioning of the steel pipe column and making the construction more stable and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the setting of reusable I-beam piers;

[0019] Figure 2 Schematic diagram of the detailed connection structure of the I-beam pier;

[0020] Figure 3 Schematic diagram of adjusting the verticality of the steel casing with built-in jacks;

[0021] Figure 4 Top view schematic diagram of the built-in jack of the steel casing;

[0022] Figure 5 Schematic diagram of high-precision plumb adjustment of the assembled support;

[0023] Figure 6 Schematic diagram of the structure of the assembled plumb support;

[0024] Figure 7 Schematic diagram of synchronously sinking sand and stone bulk materials outside the steel casing;

[0025] Figure 8 Schematic diagram of the structure of the steel operation platform device for integrated concrete pouring of pile columns;

[0026] Figure 9 Top view schematic diagram of the steel operation platform.

[0027] Description of the reference numerals: 1 - outer steel casing, 2 - permanent steel casing of the inner pier column, 3 - hydraulic jack, 4 - arc-shaped steel plate, 5 - PLC synchronous hydraulic control system, 6 - original ground surface, 7 - sand and gravel granular materials, 8 - compacted state granular materials, 9 - I-beam pier, 10 - steel connection plate, 11 - steel bars, 12 - mud ditch, 13 - reinforced concrete hardening layer, 14 - longitudinal steel member, 15 - transverse steel member, 16 - assembled plumb bob support, 17 - plumb bob jack, 18 - arc-shaped contact steel plate, 19 - laser inclinometer tube, 20 - truss beam, 21 - protective fence, 22 - bolt, 23 - flange structure, 24 - steel truss, 25 - base steel plate, 26 - ladder, 27 - platform steel support foot, 28 - diamond plate, 29 - pouring pipe hole, 30 - steel section bar. Detailed implementation mode

[0028] The following further describes the present utility model in conjunction with embodiments. The description of the following embodiments is only used to help understand the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

[0029] Embodiment 1

[0030] As an embodiment, as Figures 1 to 7 shown, this integrated pile column of the permanent steel casing of the bridge crossing the subgrade of the existing high-speed line includes an outer steel casing 1. A reinforced concrete hardening layer 13 is poured on the ground around the outer steel casing 1, and I-beam piers 9 are arranged around the outer steel casing 1 on the reinforced concrete hardening layer 13.

[0031] As Figure 1 and Figure 2 shown, a mud ditch 12 is reserved outside the reinforced concrete hardening layer 13, a steel connection plate 10 is fixed on the surface of the reinforced concrete hardening layer 13 through embedded steel bars 11, and the I-beam pier 9 is welded and fixed on the steel connection plate 10; a compacted state granular material 8 is filled between the outer steel casing 1 and the reinforced concrete hardening layer 13; four I-beam piers 9 are symmetrically arranged along the cross axis of the pile foundation.

[0032] As Figure 5 and Figure 6As shown in the figure, an assembled vertical adjustment bracket 16 is provided on the reinforced concrete hardening layer 13 outside the I-beam pier 9; the assembled vertical adjustment bracket 16 includes a longitudinal steel member 14 and a transverse steel member 15. The assembled vertical adjustment bracket 16 is fixed on the reinforced concrete hardening layer 13, and four vertical adjustment jacks 17 are fixedly arranged on the assembled vertical adjustment bracket 16 along the direction of the pile foundation cross axis. During the sinking construction of the inner pier permanent steel casing 2, a laser inclinometer tube 19 is suspended inside the inner pier permanent steel casing 2; an arc-shaped contact steel plate 18 is arranged at the top of the vertical adjustment jack 17 according to the outer wall radian of the inner pier permanent steel casing 2, and the vertical adjustment jack 17 is supported on the I-beam pier 9.

[0033] As Figure 7 shown in the figure, the inner pier permanent steel casing 2 is sunk inside the outer steel casing 1, and sand and gravel granular materials 7 are arranged around the inner pier permanent steel casing 2 to reduce the difficulty of later soil excavation.

[0034] Four groups of hydraulic jacks 3 are arranged along the periphery of the inner pier permanent steel casing 2 along the cross axis direction. An arc-shaped steel plate 4 is provided at one end of the hydraulic jack 3, and the arc-shaped steel plate 4 is attached to the inner wall of the outer steel casing 1; the hydraulic jack 3 is connected to a PLC synchronous hydraulic control system 5.

[0035] Embodiment 2

[0036] As another embodiment, this Embodiment 2 is proposed on the basis of Embodiment 1, which is a more specific integrated pile column of the permanent steel casing of the bridge crossing the existing high-speed railway subgrade. A steel working platform device for integrated concrete pouring of pile columns is erected above the outer steel casing 1.

[0037] As Figure 8 and Figure 9 shown in the figure, the steel working platform device for integrated concrete pouring of pile columns includes an upper working steel platform 20 and a lower support structure. Protective fences 21 are provided around the upper working steel platform 20. Checkered steel plates 28 are laid on the working steel platform 20 and pouring pipe holes 29 are reserved for fixing the conduit; a ladder 26 is provided on the side of the working steel platform 20 for workers to get on and off the platform for operation.

[0038] The lower support structure includes platform steel feet 27 and steel members 30. The four platform steel feet 27 are connected by steel members 30. Steel trusses 24 are arranged between the steel members 30 to strengthen the integrity. The platform steel feet 27 are fixedly connected to the ground through base steel plates 25 at the bottom, and the top of the platform steel feet 27 is fixedly connected to the working steel platform 20 through a flange structure 23 and bolts 22. By using the steel working platform device for concrete pouring, the influence of concrete pouring construction on the lower outer steel casing 1 can be reduced.

[0039] It should be noted that the same or similar parts in this embodiment and the first embodiment can be referred to each other, and will not be elaborated in this application.

[0040] The embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

Claims

1. A permanent steel casing integrated pile column for a bridge passing through the subgrade of an existing high-speed line, characterized in that: It includes an outer steel casing. A reinforced concrete hardening layer is poured on the ground around the outer steel casing. An I-beam pier is provided around the outer steel casing on the reinforced concrete hardening layer. An assembled plumb bob support is provided on the reinforced concrete hardening layer outside the I-beam pier. An adjusting jack for plumb bob adjustment of the permanent steel casing of the inner pier column is provided in the assembled plumb bob support, and the I-beam pier is supported below the adjusting jack. The permanent steel casing of the inner pier column is sunk inside the outer steel casing. Hydraulic jacks that are circumferentially arranged on the outer ring of the permanent steel casing of the inner pier column and are propped against the inner wall of the outer steel casing are provided. A pile-column integrated concrete casting steel working platform device is erected above the outer steel casing.

2. The permanent steel casing integrated pile column of the bridge crossing the existing high-speed railway subgrade according to claim 1, characterized in that, A mud ditch is reserved outside the reinforced concrete hardening layer. Steel connecting plates are fixed on the surface of the reinforced concrete hardening layer through embedded steel bars, and I-beam piers are welded and fixed on the steel connecting plates. Dense bulk materials are filled between the outer steel casing and the reinforced concrete hardening layer. Four I-beam piers are symmetrically arranged along the cross axis of the pile foundation.

3. The permanent steel casing integrated pile column of the bridge crossing the existing high-speed railway subgrade according to claim 1, characterized in that, The assembled plumb bob support includes longitudinal steel members and transverse steel members. The assembled plumb bob support is fixed on the reinforced concrete hardening layer. Four adjusting jacks are fixedly arranged along the cross axis direction of the pile foundation on the assembled plumb bob support. When the permanent steel casing of the inner pier column is sunk, a laser inclinometer tube is suspended inside the permanent steel casing of the inner pier column. An arc contact steel plate is arranged at the top of the adjusting jack according to the radian of the outer wall of the permanent steel casing of the inner pier column, and the adjusting jack is supported on the I-beam pier.

4. The permanent steel casing integrated pile column of the bridge crossing the existing high-speed railway subgrade according to claim 1, characterized in that Sand and stone bulk materials are arranged around the permanent steel casing of the inner pier column.

5. The permanent steel casing integrated pile column of the bridge crossing the existing high-speed railway subgrade according to claim 1, characterized in that Four groups of hydraulic jacks are arranged along the periphery of the permanent steel casing of the inner pier column along the cross axis direction. An arc steel plate is provided at one end of the hydraulic jack, and the arc steel plate is attached to the inner wall of the outer steel casing. The hydraulic jack is connected with a PLC synchronous hydraulic control system.

6. The permanent steel casing integrated pile column of the bridge crossing the existing high-speed railway subgrade according to claim 1, wherein, The pile-column integrated concrete casting steel working platform device includes an upper working steel platform and a lower support structure. A protective fence is provided around the upper working steel platform. Patterned steel plates are laid on the working steel platform and casting pipeline holes are reserved for fixing the conduit. A ladder is provided on the side of the working steel platform for workers to go up and down the platform for operation. The lower support structure includes platform steel feet and steel members. Four platform steel feet are connected by steel members. Steel trusses are arranged between the steel members. The platform steel feet are fixedly connected to the ground through base steel plates at the bottom, and the top of the platform steel feet is fixedly connected to the working steel platform through a flange structure and bolts.

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