CN216640280U - Steel trestle pile sinking positioning and protecting device - Google Patents

Abstract

The utility model discloses a positioning and protecting device for a steel trestle pile sinking, which comprises: a plurality of rows of trusses, wherein each truss comprises a supporting beam section which is erected between the constructed steel pipe pile and the bridge deck; one end of the positioning beam section is fixedly connected with the supporting beam section, and the other end of the positioning beam section extends out of the edge of the bridge deck and horizontally extends towards the lower row of steel pipe piles to be constructed; the positioning tool is erected on the positioning beam section and detachably connected with the positioning beam section, a plurality of positioning holes are formed in the positioning tool at intervals and correspond to the next row of steel pipe piles to be constructed one by one, and the connecting part of any one positioning hole and the positioning beam section is communicated in the vertical direction; and the safety channel is erected between the positioning tool and the bridge deck slab, and guardrails are arranged on two sides of the safety channel. The utility model takes the constructed steel pipe pile and the bridge deck as the foundation to erect the trussed beam, and the positioning tool is arranged on the trussed beam and used for quickly positioning the pile sinking position of the steel pipe pile, thereby ensuring the construction quality and the construction efficiency of the steel trestle while adapting to the severe construction environment.

Description

Steel trestle pile sinking positioning and protecting device

Technical Field

The utility model relates to the technical field of steel trestle construction. More specifically, the utility model relates to a positioning and protecting device for a steel trestle pile sinking.

Background

The steel trestle pile sinking construction is usually carried out on land by adopting equipment such as an automobile crane to arrange a hanging basket or pay-off positioning to carry out the construction of the steel pipe pile, but the hydrological environment under the bridge is complicated, the construction environment is abominable under the condition, the installation of the hanging basket, the accuracy of construction and pay-off positioning all receives great influence, lead to the unable accuracy of steel pipe pile, quick positioning, especially when the operation of sinking the pile on the sea, construction area is narrow and receives the influence of sea stormy waves great, the installation quality and the installation efficiency of the steel trestle are seriously influenced.

For solving the above problems, it is desirable to provide a steel trestle pile sinking positioning and protecting device, which can quickly and accurately position a steel pipe pile under the conditions of severe construction environment and limited construction conditions, and ensure the construction quality and the construction efficiency of the steel trestle.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a steel trestle pile sinking positioning and protecting device, which is characterized in that a truss is erected by taking a constructed steel pipe pile and a bridge deck as a foundation, and a positioning tool is arranged on the truss and used for quickly positioning the pile sinking position of the steel pipe pile, so that the device is suitable for various conditions of severe construction environment and limited construction conditions, and simultaneously ensures the construction quality and the construction efficiency of the steel trestle.

To achieve these objects and other advantages and in accordance with the purpose of the utility model, as embodied and broadly described herein, there is provided a steel trestle pile positioning and protecting device, wherein a plurality of rows of steel pipe piles are arranged at intervals along a length direction of a steel trestle, each row of steel pipe piles includes a plurality of steel pipe piles arranged at intervals along a width direction of the steel trestle, the steel trestle pile positioning and protecting device includes:

the trusses are arranged at intervals along the width direction of the steel trestle and correspond to the steel pipe piles in the same row one by one, any one truss is arranged along the length direction of the steel trestle, and the trusses comprise supporting beam sections which are erected between the steel pipe piles in the constructed rows and the bridge deck; one end of the positioning beam section is fixedly connected with the outer end part of the supporting beam section, the other end of the positioning beam section extends out of the edge of the constructed bridge deck and horizontally extends towards the lower row of steel pipe piles to be constructed, and the length of the positioning beam section is greater than the distance between the two adjacent rows of steel pipe piles;

the positioning tool is erected on the positioning beam sections of the multiple rows of trussed beams and detachably connected with the positioning beam sections, a plurality of positioning holes are arranged on the positioning tool at intervals and correspond to a plurality of steel pipe piles to be constructed in the next row one by one, any one positioning hole is vertically arranged and is positioned right above the corresponding steel pipe pile, and the connecting part of the positioning hole and the positioning beam sections is communicated in the vertical direction;

and the safety channel is erected between the positioning tool and the constructed bridge deck, and guardrails are arranged on two sides of the top surface of the safety channel.

Preferably, the steel trestle pile sinking positioning and protecting device further comprises a plurality of cross rods, the cross rods are respectively arranged at the tops of the plurality of rows of steel pipe piles, any cross rod is arranged along the width direction of the steel trestle and connected with the plurality of steel pipe piles in the same row, and the cross rods are fixed between the corresponding row of steel pipe piles and the supporting beam sections of the plurality of rows of trussed beams.

Preferably, the pile sinking positioning and protecting device for the steel trestle comprises a supporting beam section, a plurality of rows of steel pipe piles are erected on the top of the constructed steel pipe piles, the supporting beam section supports the constructed bridge deck, the supporting beam section and the supporting beam section comprise a plurality of Bailey beams, the Bailey beams are continuously arranged along the length direction of the steel trestle, and any two adjacent Bailey beams are fixedly spliced.

Preferably, the positioning tool comprises a first walkway plate, the first walkway plate is erected at the tops of the positioning beam sections of the multiple rows of trussed beams in the width direction of the steel trestle, and the positioning holes are arranged on the first walkway plate at intervals; and the railings are arranged on two sides of the top surface of the first walkway plate and connected with the guardrails through transverse connections.

Preferably, steel trestle pile sinking location and protector, escape way includes that the second walks the guidance tape, and its length direction along the steel trestle erects the top of location roof beam section and rather than dismantling and be connected, the one end of second walking the guidance tape is connected with the decking of having been under construction completion, the other end with first walking the guidance tape is connected, the guardrail is fixed the top surface both sides of second walking the guidance tape.

Preferably, the first walkway plate and the second walkway plate are located on the same horizontal plane, and the width of the second walkway plate is the same as that of the positioning beam section.

The utility model at least comprises the following beneficial effects:

1. according to the utility model, the trussed beams arranged in a row between the steel pipe piles and the bridge deck plates which are constructed are used as the supporting and positioning bases of the positioning tool, and the safety channels with the guardrails are arranged on the trussed beams to communicate the bridge deck plates and the positioning tool, so that the rapid pile sinking construction can be carried out under the condition of ensuring the construction safety, the steel pipe piles can still be kept stable in water as the supporting bases under severe environments, and the relative stability of the positioning tool is ensured, thereby ensuring the positioning accuracy of the pile sinking position, improving the positioning and mounting accuracy of the steel pipe piles and improving the construction quality;

2. the positioning tool can be quickly assembled and disassembled on the trussed beams, and the single-row trussed beams are formed by splicing a plurality of Bailey beams, so that the positioning tool can be conveniently positioned and installed according to construction requirements, when the steel trestle is pushed to be constructed in the length direction, the positioning tool can be recycled to perform positioning construction on steel pipe piles in different rows, additional machining auxiliary tools or auxiliary positioning operation is not needed, and the construction efficiency is greatly improved;

3. the safety channel is arranged, the railings are arranged on the two sides of the walkway plate of the positioning tool, the railings of the positioning tool and the guardrails of the safety channel are connected into a whole through the transverse connection, the protection effect is achieved in pile sinking construction, and the safety risk of constructors in auxiliary pile sinking construction is effectively reduced.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

Fig. 1 is a schematic structural view of a positioning and protecting device for a steel trestle pile sinking according to an embodiment of the present invention;

fig. 2 is a schematic view of a connection structure of the positioning tool and the safety channel in the above embodiment.

Description of reference numerals:

11. multiple rows of constructed steel pipe piles; 12. a steel pipe pile to be constructed; 2. a constructed deck slab; 31. a support beam section; 32. positioning the beam section; 4. a cross bar; 5. positioning a tool; 51. a first walkway plate; 52. positioning holes; 53. a railing; 6. a secure channel; 61. a second walkway plate; 62. and (4) a guardrail.

Detailed Description

The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the utility model by referring to the description text.

It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1-2, the present invention provides a positioning and protecting device for steel trestle pile sinking, wherein a plurality of rows of steel pipe piles are arranged at intervals along the length direction of a steel trestle, any row of steel pipe piles comprises a plurality of steel pipe piles which are arranged at intervals along the width direction of the steel trestle, and the positioning and protecting device for steel trestle pile sinking comprises:

the trusses are arranged at intervals along the width direction of the steel trestle and correspond to the steel pipe piles in the same row one by one, any one of the trusses is arranged along the length direction of the steel trestle, and the trusses comprise supporting beam sections 31 which are erected between the steel pipe piles 11 in the constructed rows and the bridge deck; one end of the positioning beam section 32 is fixedly connected with the outer end part of the supporting beam section 31, the other end of the positioning beam section extends out of the edge of the constructed bridge deck 2 and horizontally extends towards the lower row of steel pipe piles 12 to be constructed, and the length of the positioning beam section 32 is larger than the distance between the two adjacent rows of steel pipe piles;

the positioning tool 5 is erected on the positioning beam sections 32 of the multiple rows of trussed beams and detachably connected with the positioning beam sections, a plurality of positioning holes 52 are formed in the positioning tool 5 at intervals and correspond to a plurality of steel pipe piles to be constructed in the next row one by one, any one positioning hole 52 is vertically arranged and is located right above the corresponding steel pipe pile, and the connecting position of the positioning hole 52 and the positioning beam section 32 is communicated in the vertical direction;

and the safety channel 6 is erected between the positioning tool 5 and the constructed bridge deck 2, and two sides of the top surface of the safety channel 6 are provided with guardrails 62.

Among the above-mentioned technical scheme, the length direction interval setting of steel trestle is followed to the multirow steel-pipe pile, and arbitrary row steel-pipe pile includes a plurality of steel-pipe piles that set up along steel trestle width direction interval, has guaranteed the bearing structure stability of steel trestle in aqueous under the adverse circumstances of environment. The steel pipe pile fixing structure is characterized in that a multi-column truss girder structure is arranged between the steel pipe pile and the bridge deck, a positioning girder section 32 of a single-column truss girder extends out of the edge of a bridge deck 2 which is constructed and extends to the position right above the next row of steel pipe piles 12 to be constructed along the construction direction, reliable and integrated support is provided for installation of the positioning tool 5, the temporary support structure can serve as a new support girder section after pile sinking of the steel pipe piles is completed, the bridge deck of the next section is installed at the top of the temporary support structure, therefore, the temporary support structure (the positioning girder section 32) is converted into one part of a steel trestle fixing structure (a support girder section 31), repeated disassembly and assembly and disassembly of the positioning girder section 32 are not needed, and the connection stability of the bridge deck of the steel trestle and the multiple rows of steel pipe piles supported below are improved through the truss girder structure arranged longitudinally (the length direction of the steel trestle). Location frock 5 and escape way 6 can be as whole to be assembled and dismantle on location beam section 32, location frock 5 spanes on the location beam section 32 of multiseriate longeron, a plurality of locating holes 52 are used for realizing the location of the next row of steel-pipe pile of treating being under construction, escape way 6 is used for communicateing decking 2 and the location frock 5 that the construction has been accomplished, for guaranteeing staff's safe removal between decking and location frock 5, location frock 5 both sides still are equipped with guardrail 62, play the effect of protection, staff's risk of falling into water has been reduced. After the whole row of steel pipe piles are driven, the positioning tool 5 and the safety channel 6 are removed, and then the next section of bridge deck can be erected on the positioning beam section 32.

When the steel trestle is constructed, firstly (two rows) of steel pipe piles serving as a foundation are constructed at a bridge approach position according to a design position, a bridge deck is erected on a plurality of rows of constructed steel pipe piles 11, a plurality of rows of trusses are arranged between the bridge deck and the steel pipe piles, a supporting beam section 31 of any row of trusses is fixed between a constructed bridge deck 2 and the steel pipe piles, a positioning beam section 32 serving as an extension section of the supporting beam section 31 extends out of the edge of the constructed bridge deck 2 and horizontally extends towards a lower row of steel pipe piles 12 to be constructed; then use a plurality of locating beam sections 32 as supporting foundation installation location frock 5 and escape way 6, location frock 5 and escape way 6 can be as whole dismouting on locating beam section 32, the mounted position of location frock 5 is decided according to the position of the steel-pipe pile 12 of waiting to be under construction next row, escape way 6 is used for the plane at location frock 5 and the decking 2 place that has been under construction completion, make things convenient for the staff to remove to near location frock 5 from the decking 2 that has been under construction completion, carry out assistance and monitoring to steel-pipe pile sinking construction. The positioning tool 5 spans over the positioning beam sections 32, the positioning holes 52 correspond to a plurality of steel pipe piles to be constructed in the next row one by one and also correspond to a plurality of rows of trussed beams one by one, the intersection point of any one positioning hole 52 and the corresponding trussed beam is located on the positioning beam section 32, the intersection point of the positioning hole 52 and the positioning beam section 32 is the installation position of the corresponding steel pipe pile, the positioning beam section 32 is of a three-dimensional beam frame structure, the width of the positioning beam section is slightly larger than the diameter of the steel pipe pile, and the part, which is overlapped with the positioning hole 52, of the positioning beam section is communicated in the vertical direction, so that the steel pipe pile can be inserted in the vertical direction conveniently and pile sinking operation can be carried out. Specifically, in this embodiment, the trussed beams and the positioning tool are all made of i-steel 25a, the diameter of the steel pipe pile in the engineering design of the steel trestle is 630mm, the positioning hole 52 is a square hole, the size is 650mm x 650mm, the width of the trussed beam is 650mm, and when the positioning tool is installed, the positioning hole 52 and the positioning beam section 32 are completely overlapped in the width direction of the steel trestle, so that the maximum plane error of positioning of the steel pipe pile is 2cm, and the driving precision of the steel pipe pile is ensured. In addition, in actual construction, because the distance between the steel pipe piles in the same row is fixed, the relative positions of the positioning holes 52 on the positioning tool 5 are fixed, and the positioning tool 5 can be reused in positioning construction of the steel pipe piles in different rows, therefore, before positioning the steel pipe piles, not all the single-row trusses need to be installed to complete the positioning beam section 32, if in this embodiment, three steel pipe piles are arranged in the same row, when positioning the next row of steel pipe piles, only the positioning beam sections 32 on the two outer rows of trusses need to be assembled, so that positioning of the positioning tool 5 in the width direction of the steel trestle can be realized (namely, the two positioning holes 52 on the outer side are respectively superposed with the top surfaces of the two outer rows of trusses), and at this time, even if the positioning beam section 32 of the middle row of trusses is not installed, accurate positioning installation of the positioning tool 5 can be completed. After the steel pipe pile row construction is completed, the positioning beam sections 32 of the middle row of trussed beams are erected, and the next bridge deck is installed by taking the plurality of positioning beam sections 32 as new supporting beam sections, so that the circular steel trestle bridge section construction is completed. And repeating the circulation until pile sinking construction of all the steel trestles is completed.

According to the utility model, the trusses arranged in a row between the constructed steel pipe pile and the bridge deck are used as the supporting and positioning bases of the positioning tool 5, the safety channel 6 with the guardrail 62 is arranged on the trusses to communicate the bridge deck and the positioning tool 5, so that the rapid pile sinking construction can be carried out under the condition of ensuring the construction safety, the steel pipe pile can still be kept stable in water as the supporting base under the severe environment, and the relative stability of the positioning tool is ensured, thereby ensuring the positioning accuracy of the pile sinking position, improving the positioning and mounting accuracy of the steel pipe pile and improving the construction quality.

In another technical scheme, the steel trestle pile sinking positioning and protecting device further comprises a plurality of cross rods 4 which are respectively arranged at the tops of the plurality of rows of steel pipe piles, any cross rod 4 is arranged along the width direction of the steel trestle and connected with the plurality of steel pipe piles in the same row, and the cross rods 4 are fixed between the corresponding row of steel pipe piles and the supporting beam sections 31 of the plurality of rows of trussed beams. Wherein, a plurality of horizontal poles 4 and multirow steel-pipe pile one-to-one, the steel-pipe pile is installed in a row in the work progress, and after the whole constructions of steel-pipe pile in the same row were accomplished, erect horizontal pole 4 and fixed at this row of steel-pipe pile top, then erect the truss with horizontal pole 4 as new support foundation. Any cross rod 4 is arranged along the width direction of the steel trestle, so that the truss is more flexibly erected and installed, the available construction area is increased, and the connection stability of the truss is improved.

In another technical scheme, the steel trestle pile sinking positioning and protecting device, the supporting beam section 31 is erected at the top of the multi-row steel pipe piles 11 which are constructed and supports the bridge deck 2 which is constructed, the supporting beam section 31 and the supporting beam section 31 both comprise a plurality of Bailey beams which are continuously arranged along the length direction of the steel trestle, and any two adjacent Bailey beams are fixedly spliced. Among the above-mentioned technical scheme, the direction that sets up of support beam section 31 and location beam section 32 is the same and at adjacent extreme point fixed connection, and support beam section 31 and location beam section 32 are formed by the concatenation of a plurality of bailey beams respectively, and arbitrary bailey beam is the unit beam section, can splice fast fixedly between two adjacent bailey beams, is convenient for carry out the concatenation of location beam section 32 in the construction (after support beam section 31 is installed and is accomplished). Meanwhile, the length of the positioning beam section 32 to be installed can be adjusted according to the actual construction condition (the horizontal distance from the outermost end of the supporting beam section 31 to the next row of steel pipe piles 12 to be constructed), and the length of the positioning beam section 32 is ensured to be enough to extend to the position right above the next row of steel pipe piles 12 to be constructed.

In another technical solution, in the device for positioning and protecting a steel trestle pile sinking, the positioning tool 5 includes a first walkway plate 51, which is erected on the tops of the positioning beam sections 32 of the multiple rows of trussed beams along the width direction of the steel trestle, and the positioning holes 52 are arranged on the first walkway plate 51 at intervals; and railings 53 which are arranged on both sides of the top surface of the first walkway plate 51 and are connected with the guardrails 62 by cross-links. Specifically, first guidance tape 51 adopts the preparation of 1cm thick steel sheet to form, first guidance tape 51 level is erect at positioning beam section 32 top, spaced apart being equipped with locating hole 52 on first guidance tape 51, it runs through the steel sheet along vertical direction, and correspond the intercommunication with the positioning beam section 32 of below, locating hole 52 plays main limiting displacement to the steel-pipe pile sinking, positioning beam section 32 of below plays supplementary spacing effect when not interfering the steel-pipe pile and transferring along vertical direction, thereby, positioning beam section department at locating hole 52 and rather than the intercommunication forms three-dimensional limit structure, can carry out quick, reliable location to the steel-pipe pile sinking position, and spacing to the pile sinking process, reduce installation error. The two sides of the first walkway plate 51 are provided with railings 53, in this embodiment, the railings 53 are a plurality of vertical rods with a height of 1.2m, and one vertical rod is arranged at an interval of 1.5m along the length direction of the first walkway plate 51; and a cross-link is further arranged along the circumferential direction of the positioning tool 5 and the safety channel 6, is sequentially connected with all vertical rods on the first walkway plate 51 along the horizontal direction (every two vertical rods along the outer contour line of the first walkway plate) and is connected with a guardrail 62 of the safety channel 6, so that the protection effect is realized on the construction performed in the range of the safety channel-positioning tool.

In another technical scheme, steel trestle pile sinking location and protector, escape way 6 includes second walkway board 61, and it erects along the length direction of steel trestle the top of locating beam section 32 and rather than dismantling and be connected, the one end of second walkway board 61 is connected with the decking 2 of having been under construction completion, the other end with first walkway board 51 is connected, guardrail 62 is fixed the top surface both sides of second walkway board 61. Specifically, the safe passage 6 is arranged between the positioning tool 5 and the bridge deck 2 which is constructed and completed, and is used for communicating two planes, so that a worker can conveniently move to a to-be-constructed area where the positioning tool 5 is located from a stable platform where the bridge deck is located, and the hoisting equipment and the like are assisted to carry out steel pipe pile sinking construction. The escape way 6 can set up in the optional position department that can communicate decking and location frock 5, for further improving the stability of escape way 6, can provide more stable, reliable support to escape way 6 when second guidance tape 61 and arbitrary positioning beam section 32 coincide completely. In this embodiment, the second walkway plates 61 are disposed on the outermost positioning beam segments 32, and form a horizontal L-shaped walkway plate structure together with the first walkway plates 51, and balustrades 53/guard rails 62 for protection are disposed along both sides of the L-shaped walkway plates, thereby ensuring the safety of the movement of the workers on the walkway plates.

In another technical solution, in the device for positioning and protecting a steel trestle pile sinking, the first walkway plate 51 and the second walkway plate 61 are located on the same horizontal plane, and the width of the second walkway plate 61 is the same as the width of the positioning beam segment 32. Thereby, first pavement board 51, second pavement board 61 all set up at locating beam section 32 coparallel, do not need the slope pavement board when guaranteeing both can communicate smoothly, have reduced safe risk, and do benefit to installing and dismantling as whole on locating beam section 32 of escape way 6 and location frock 5, further improve the efficiency of construction. The width of the second walkway plate 61 is the same as the width of the positioning beam section 32, ensuring the connection stability of the safety channel.

While embodiments of the utility model have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a steel trestle pile sinking location and protector, its characterized in that, the length direction interval setting of steel trestle is followed to the multirow steel-pipe pile, and arbitrary row of steel-pipe pile includes a plurality of steel-pipe piles, and its width direction interval along the steel trestle sets up, steel trestle pile sinking location and protector includes:

the trusses are arranged at intervals along the width direction of the steel trestle and correspond to the steel pipe piles in the same row one by one, any one truss is arranged along the length direction of the steel trestle, and the trusses comprise supporting beam sections which are erected between the steel pipe piles in the constructed rows and the bridge deck; one end of the positioning beam section is fixedly connected with the outer end part of the supporting beam section, the other end of the positioning beam section extends out of the edge of the constructed bridge deck and horizontally extends towards the lower row of steel pipe piles to be constructed, and the length of the positioning beam section is greater than the distance between the two adjacent rows of steel pipe piles;

the positioning tool is erected on the positioning beam sections of the multiple rows of trussed beams and detachably connected with the positioning beam sections, a plurality of positioning holes are arranged on the positioning tool at intervals and correspond to a plurality of steel pipe piles to be constructed in the next row one by one, any one positioning hole is vertically arranged and is positioned right above the corresponding steel pipe pile, and the connecting part of the positioning hole and the positioning beam sections is communicated in the vertical direction;

and the safety channel is erected between the positioning tool and the constructed bridge deck, and guardrails are arranged on two sides of the top surface of the safety channel.

2. The device for positioning and protecting a steel trestle pile sinking of claim 1, further comprising a plurality of cross bars respectively arranged at the tops of the plurality of rows of steel pipe piles, wherein any cross bar is arranged along the width direction of the steel trestle and connected with the plurality of steel pipe piles in the same row, and the cross bars are fixed between the corresponding row of steel pipe piles and the supporting beam sections of the plurality of rows of trussed beams.

3. The steel trestle pile sinking positioning and protecting device according to claim 1, wherein the supporting beam section is erected on top of the constructed rows of steel pipe piles and supports the constructed bridge deck, the supporting beam section and the supporting beam section each comprise a plurality of bery beams, the bery beams are continuously arranged along the length direction of the steel trestle, and any two adjacent bery beams are fixedly spliced.

4. The steel trestle pile sinking positioning and protecting device of claim 1, wherein the positioning tool comprises a first walkway plate which is erected on top of the positioning beam sections of the plurality of rows of trussed beams in the width direction of the steel trestle, and the positioning holes are arranged on the first walkway plate at intervals; and the railings are arranged on two sides of the top surface of the first walkway plate and connected with the guardrails through transverse connections.

5. The device for positioning and protecting pile sinking of steel trestle according to claim 4, wherein the safety channel comprises a second walkway plate which is erected on the top of the positioning beam section along the length direction of the steel trestle and is detachably connected with the positioning beam section, one end of the second walkway plate is connected with the constructed bridge deck, the other end of the second walkway plate is connected with the first walkway plate, and the guard rails are fixed on two sides of the top surface of the second walkway plate.

6. The steel trestle pile sinking positioning and protecting device of claim 5, wherein the first walkway plate and the second walkway plate are located on the same horizontal plane, and the width of the second walkway plate is the same as the width of the positioning beam section.

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