CN111980011A

CN111980011A - Grooving device for Larsen steel sheet pile and construction method thereof

Info

Publication number: CN111980011A
Application number: CN202010906229.7A
Authority: CN
Inventors: 季永新
Original assignee: Suzhou Zhongbao Municipal Garden Engineering Co ltd
Current assignee: Suzhou Zhongbao Municipal Garden Engineering Co ltd
Priority date: 2020-09-01
Filing date: 2020-09-01
Publication date: 2020-11-24
Anticipated expiration: 2040-09-01
Also published as: CN111980011B

Abstract

The application relates to a grooving device for Larsen steel sheet pile, including the pile body of vertical setting and the water sword mechanism of setting on the pile body, be equipped with on the pile body and be used for carrying out the fender piece of strutting to the deep trouth lateral wall, the connection can be dismantled on the pile body to the fender piece. This application has the deep trouth shaping quality of improvement, improves the sunken straightness that hangs down of conventional pile body, and then improves the final shaping quality's of cofferdam effect.

Description

Grooving device for Larsen steel sheet pile and construction method thereof

Technical Field

The application relates to the technical field of cofferdam building construction, in particular to a grooving device for Larsen steel sheet piles and a construction method thereof.

Background

The Larsen steel sheet piles are also called U-shaped steel sheet piles, and the side edges of adjacent Larsen steel sheet piles can form an interlocking structure, so that the interlocking structure can generate good waterproofness. The building material can be used as a novel building material and can be used as a soil retaining wall, a water retaining wall and a sand retaining wall when a bridge cofferdam is built, a large pipeline is laid and a temporary ditch is excavated; the method also plays an important role in projects such as wharfs, retaining walls, embankment revetments and the like. The Larsen steel sheet pile cofferdam is green and environment-friendly, and has high construction speed, low construction cost and longer service life.

Referring to fig. 1, the prior art relates to a water jet larsen steel sheet pile, which includes a pile body 1 and a water jet mechanism 2 disposed on the pile body 1, that is, the water jet mechanism 2 is additionally disposed on the pile body 1 of a conventional larsen steel sheet pile. The water jet cutting mechanism 2 includes a water pipe 21 welded to the bottom plate of the pile body 1 along the longitudinal direction of the pile body 1, and a high-pressure nozzle 22 provided at an end of the water pipe 21. During specific construction, firstly, a deep groove with a certain depth is chiseled on the ground by using the water jet larsen steel sheet pile, then the water jet larsen steel sheet pile is lifted upwards, and finally the conventional larsen steel sheet pile is placed into the deep groove.

The water jet cutter Larsen steel sheet pile can effectively break the soil layer which is relatively hard underground, so that a deep groove is more conveniently formed, and the conventional Larsen steel sheet pile can be directly placed in the later stage. However, when the water jet larsen steel sheet pile jets high-pressure water flow downwards to impact, the water flow is very easy to scour the bottom surface and the side surface of the deep groove, and then after the water jet larsen steel sheet pile is taken out, the soft soil in the side wall of the deep groove is very easy to fall off, and finally the situation that the conventional larsen steel sheet pile is inclined in the process of being placed into the deep groove is easy to occur, and the unstable situation can occur after the conventional larsen steel sheet pile is placed, so that the forming quality of the cofferdam is general.

In view of the above-mentioned related art, the inventor considers that the final forming quality of the grooving device is general when a new conventional Larsen steel sheet pile is installed after deep groove drilling.

Disclosure of Invention

In order to improve the final forming quality of the conventional Larsen steel sheet pile, the application provides a grooving device for the Larsen steel sheet pile and a construction method thereof.

In a first aspect, the present application provides a grooving apparatus for a larsen steel sheet pile, which adopts the following technical scheme:

the utility model provides a grooving device for Larsen steel sheet pile, includes the pile body of vertical setting and sets up the water jet cutter mechanism on the pile body, be equipped with the fender spare that is used for strutting the deep trouth lateral wall on the pile body, the connection can be dismantled on the pile body to the fender spare.

By adopting the technical scheme, after the pile body is driven into the ground to form the deep groove, the supporting part is detached from the pile body, then the pile body is detached, and a new conventional pile body is placed in the deep groove; in the process that the pile body was demolishd and the in-process that conventional pile body was placed, prop the lateral wall of deep groove better and strut, avoid the lateral wall of deep groove to take place the circumstances that the cob wall peeled off and the weak soil collapses, make conventional pile body can place into the deep groove with more accurate straightness that hangs down, the condition that the bore differs can not appear yet in the lateral wall of deep groove, guarantee the stability after final Larsen steel sheet pile shaping, improve the shaping quality of conventional pile body, finally improve the shaping quality of cofferdam.

Optionally, the supporting part is arranged to surround a closed supporting cylinder outside the pile body, the length direction of the supporting cylinder is parallel to the length direction of the pile body, the inner side wall of the supporting cylinder is attached to the outer side face of the pile body, and the top end of the supporting cylinder is in threaded connection with the top end of the pile body.

Through adopting above-mentioned technical scheme, a structure of a support piece is provided, establish the outside all around of pile body along the length direction cover of pile body during this kind of support piece installation, then with the top bolted connection of support piece on the pile body, when pulling out the pile body, support piece is in the deep trouth, and is comprehensive effectual to the lateral wall of deep trouth is strutted, and this kind of supporting plate is comparatively comprehensive to the strutting of deep trouth, but the mounting means is comparatively troublesome.

Optionally, the supporting part is a semi-open supporting plate, the supporting plate is attached to the bottom plate and the two side plates of the pile body towards the vertical side face of the pile body, and the top end of the supporting plate is in threaded connection with the top end of the pile body.

Through adopting above-mentioned technical scheme, provide the structure of another kind of supporting piece, establish the supporting piece into the supporting plate of semi-open formula, can direct lock on the lateral wall of pile body bottom plate and curb plate when the installation supporting plate installation, then utilize bolted connection can, this kind of structural installation is comparatively simple, but not comprehensive enough to the range of strutting of deep trouth inner wall.

Optionally, a stabilizing plate is arranged on the side face, far away from the pile body, of the supporting part, and the length direction of the stabilizing plate is parallel to the length direction of the pile body.

By adopting the technical scheme, when the pile body and the supporting piece are driven downwards into the ground by the stamping machine, the stabilizing plate plays a certain role in guiding and limiting, so that the stability in the construction process is improved; on the other hand, after the supporting part sinks into the ground, the stabilizing plate improves the contact area between the supporting part and the deep groove, and further improves the frictional resistance between the supporting part and the deep groove, so that the supporting part is more stable after being formed.

Optionally, the device further comprises a deviation correcting mechanism for correcting the perpendicularity of the pile body.

Through adopting above-mentioned technical scheme, the straightness that hangs down that the mechanism of rectifying has improved the vertical direction motion of pile body to make the motion of the vertical direction of pile body more accurate, thereby improved the final shaping quality of deep trouth, thereby guaranteed the straightness that hangs down of a fender spare, when follow-up installation conventional pile body, more accurate of conventional pile body installation, and then improved the final shaping quality of conventional pile body.

Optionally, the mechanism of rectifying includes that the level sets up the foundatin plate in the pile body outside and sets up the supporting component in the foundatin plate bottom surface, the vertical logical groove of offering the confession and supporting the piece and passing through of upper surface of foundatin plate, lead to the cross section setting that groove matching supported the piece.

Through adopting above-mentioned technical scheme, a concrete structure of mechanism of rectifying is proposed, and during the use, pile body and a supporting piece vertical slip are leading to the inslot, lead to the groove and give supporting piece and the better guide effect of pile body, and then make supporting piece and the comparatively accurate vertical ground of sinking of pile body, and this kind of structure is simpler, and installation operation is all comparatively convenient.

Optionally, the supporting component includes a plurality of supporting legs of vertical setting in the foundatin plate bottom surface and the regulation landing leg of difference threaded connection on every supporting leg, every the bottom of adjusting the landing leg all is equipped with the backing plate.

Through adopting above-mentioned technical scheme, a supporting component's concrete structure is provided, when using this kind of supporting component, the landing leg is adjusted in the rotating can change the height that the landing leg was adjusted to the difference to finely tune the levelness of foundatin plate, and then some regions of unevenness on ground of adaptation that can be fine.

In a second aspect, the present application provides a construction method based on a grooving apparatus, which adopts the following technical scheme:

a construction method of a Larsen steel sheet pile comprises the following steps:

step1, determining the position of the pile to be sunk, marking the position, and placing the deviation correcting mechanism at the marked position;

step2, mounting the supporting part on the pile body;

step3, utilizing a beating machine to vibrate downwards to beat the supporting part and the pile body until the pile body sinks to a sufficient height;

step4, extracting the pile body, then hoisting the new conventional pile body and placing the new conventional pile body into the deep groove along the track of the supporting member.

By adopting the technical scheme, a specific construction method is provided, the deep groove is punched by utilizing the pile body with the water jet cutter mechanism, then the pile body with the water jet cutter is dismantled, and the supporting piece performs a good supporting function on the deep groove, so that the construction method is more stable and accurate after a new conventional pile body is placed subsequently.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the water jet cutter Larsen steel sheet pile is used for sinking and punching a deep groove, a supporting part is arranged on the outer side of the pile body, and the supporting part effectively supports the inner side wall of the deep groove after the deep groove is finished, so that the perpendicularity and stability of the pile body are effectively guaranteed when a conventional pile body is placed subsequently;

2. through setting up the mechanism of rectifying, the straightness that hangs down when further having improved the grooving pile body and the supporting part sinks, and then has improved the straightness that hangs down of deep trouth, improves the accuracy nature that follow-up conventional pile body sinks, improves the shaping quality of final cofferdam.

Drawings

Fig. 1 is a schematic view of larsen steel sheet pile construction in the related art;

FIG. 2 is a schematic view showing the overall structure of a grooving apparatus according to one embodiment;

fig. 3 is a partially enlarged view of a portion a in fig. 2;

FIG. 4 is a schematic diagram primarily illustrating a deviation correction mechanism;

FIG. 5 is a schematic view showing a state of the grooving apparatus in accordance with the first embodiment;

FIG. 6 is a schematic view showing the overall structure of a grooving apparatus according to the second embodiment;

fig. 7 is a partially enlarged view of a portion B in fig. 6;

fig. 8 is a schematic view mainly showing a construction method.

Description of reference numerals: 1. a pile body; 2. a water jet mechanism; 21. a water pipe; 22. a high pressure spray head; 3. a base plate; 4. a side plate; 5. a locking portion; 61. a support cylinder; 65. supporting the guard plate; 7. a stabilizing plate; 8. a guide angle; 9. a deviation rectifying mechanism; 91. a foundation plate; 92. a support assembly; 921. supporting legs; 922. adjusting the support legs; 10. a through groove; 11. a base plate; 12. fixing the bolt; 13. a convex space; 14. a lifting ring.

Detailed Description

The present application is described in further detail below with reference to figures 2-8.

The embodiment of the application discloses a grooving device for Larsen steel sheet piles.

Example 1

Referring to fig. 2, the grooving apparatus includes a vertically arranged pile body 1 and a water jet mechanism 2 arranged on the pile body 1.

Referring to fig. 2 and 3, the deep groove water pipe pile further comprises a support member arranged on the pile body 1 and used for supporting the inner side wall of the deep groove, the support member is a closed support cylinder 61 surrounding the outer side of the pile body 1 in the embodiment, the length direction of the support cylinder 61 is parallel to the length direction of the pile body 1, the length of the support cylinder 61 is equal to the length of the pile body 1, the inner side wall of the support cylinder 61 is attached to the outer side surface of the pile body 1, and a protruding space 13 for the water pipe 21 to pass through is arranged on the support cylinder 61. During installation, the supporting cylinder 61 is sleeved outside the pile body 1 from one end of the pile body 1 far away from the high-pressure nozzle 22, and installation is completed along the length direction of the pile body 1.

Referring to fig. 3, the top end of the support cylinder 61 is screwed with the top end of the pile body 1. Specifically, four threaded holes are formed in the top end of a bottom plate 3 of the pile body 1 in a rectangular penetrating mode, the top end of a supporting cylinder 61 is connected to the pile body 1 through fixing bolts 12 in a threaded mode, a countersunk hole is formed in the supporting cylinder 61, and the surface smoothness of the supporting cylinder 61 is improved. Two rings 14 are fixedly connected to the top surface of the pile body 1, so that the pile body 1 can be pulled out conveniently at the later stage, and a new conventional pile body can be installed.

Referring to fig. 3, two stabilizing plates 7 are provided on the outer side wall of the supporting tube 61, the two stabilizing plates 7 are provided symmetrically with respect to the center line of the pile body 1 in the vertical direction, and the longitudinal direction of the stabilizing plates 7 is parallel to the longitudinal direction of the pile body 1. The stabilizing plate 7 improves the contact area between the supporting cylinder 61 and the deep groove, and further improves the frictional resistance between the supporting cylinder 61 and the deep groove, so that the supporting cylinder 61 is more stable after being molded.

Referring to fig. 2 and 4, the grooving device further comprises a deviation correcting mechanism 9 for correcting the perpendicularity of the pile body 1, the deviation correcting mechanism 9 comprises a foundation plate 91 horizontally arranged on the outer side of the pile body 1 and a plurality of supporting components 92 arranged on the bottom surface of the foundation plate 91, a through groove 10 for the supporting cylinder 61 to pass through is vertically formed in a penetrating mode on the upper surface of the foundation plate 91, and the through groove 10 is matched with the cross section of the supporting cylinder 61 in shape.

Referring to fig. 4, the supporting assembly 92 includes a supporting leg 921 vertically and fixedly connected to the bottom surface of the base plate 91 and an adjusting leg 922 screwed on the supporting leg 921, specifically, the supporting leg 921 is distributed at four corners of the bottom surface of the base plate 91, a threaded hole is provided on the bottom surface of each supporting leg 921, and the adjusting leg 922 is screwed in the corresponding threaded hole. Utilize mechanism 9 of rectifying to effectively improve the straightness that hangs down that pile body 1 sinks to the below-ground in-process to improve the shaping quality of a supporting cylinder 61, regulation landing leg 922 then can adapt to the levelness of better adjustment foundation plate 91 under the different topography conditions. The bottom end of each adjusting supporting leg 922 is horizontally and fixedly connected with a backing plate 11, so that the deviation rectifying mechanism 9 is conveniently and fixedly placed.

The implementation principle of the embodiment 1 is as follows: referring to fig. 5, in the first step, a position where pile driving is needed is found out, a mark is made, the deviation rectifying assembly is installed at a corresponding position, specifically, different adjusting legs 922 are adjusted to keep the foundation plate 91 horizontal, then the supporting assembly 92 is fixed on the foundation surface, a hole can be formed in the backing plate 11, anchoring can be performed, and a temporary counterweight can be additionally arranged for fixing;

and secondly, installing the supporting cylinder 61 outside the pile body 1, specifically, placing the pile body 1 and the supporting cylinder 61 horizontally, then manually sleeving the supporting cylinder 61 on the outer side wall of the pile body 1 by part of the length, and then hoisting the supporting cylinder 61 by using a hoisting machine with a striking function, wherein the bottom end of the pile body 1 is supported on the ground and is turned right step by step. Finally, the supporting cylinder 61 is completely sleeved outside the pile body 1;

thirdly, connecting the supporting cylinder 61 and the pile body 1 by using the fixing bolt 12 through threads, then integrally hoisting the supporting cylinder 61 and the pile body 1 by using a hoisting machine with a striking function, vertically and downwards putting the supporting cylinder into the through groove 10, and then gradually vibrating and striking the supporting cylinder and the pile body downwards by using a striking machine;

fourthly, after the supporting cylinder 61 and the pile body 1 sink to a specified depth, the fixing bolt 12 is disassembled, and then the pile body 1 is taken out;

and fifthly, finally, putting the conventional pile body 1, and guiding and supporting the conventional pile body 1 through the supporting cylinder 61, so that the vertical state of the conventional pile body is ensured, and the forming quality is improved.

Example 2

Referring to fig. 6 and 7, the present embodiment differs from embodiment 1 in that the supporting plate 65 is a semi-open supporting plate 65, the supporting plate 65 is attached to the bottom plate 3 and the two side plates 4 of the pile 1 toward the vertical side surface of the pile 1, and the top end of the supporting plate 65 is screwed to the top end of the pile 1.

The structure is simpler to install, but the supporting range is smaller than that of the embodiment.

The implementation principle of the embodiment 2 is as follows: the difference from the first embodiment is that in the present embodiment, the supporting and protecting plate 65 is installed outside the pile body 1 by clamping the supporting and protecting plate 65 to the outer side wall of the pile body 1 and then connecting the supporting and protecting plate with the fixing bolt 12.

The embodiment of the application also discloses a construction method based on the grooving device, which comprises the following steps: referring to fig. 8, the construction method includes the steps of:

step1, determining the position of the pile to be sunk, marking, placing the deviation correcting mechanism 9 at the marked position, and fixing the supporting component 92 on the ground to enable the foundation plate 91 to be horizontally arranged; in this embodiment, utilize white lime powder to draw out the pile sinking profile in the position that needs the pile sinking, then will rectify mechanism 9 and place in the mark top, backing plate 11 and the contact of basal plane, run through the through-hole on backing plate 11, utilize the anchor rod to inject the basal plane downwards and carry out the fixed of mechanism 9 of rectifying, in fixed process, at foundatin plate 91 upper surface placement spirit level, thereby convenient resolution foundatin plate 91's levelness, then through the height of adjustment regulation landing leg 922, carry out the fine setting of foundatin plate 91 levelness.

Step2, mounting the supporting part on the pile body 1; after the supporting piece is installed on the pile body 1, the supporting piece is fixedly connected by using a fixing bolt 12;

and Step3, performing a deep groove impacting process. The pile body 1 and the supporting piece are lifted simultaneously, the supporting piece vertically passes through the through groove 10, the supporting piece and the pile body 1 are vibrated and beaten downwards by utilizing a beating machine until the supporting piece and the pile body 1 sink to a sufficient height, and high-pressure water is introduced into the water through pipe 21 in the vibrating and beating process to assist impact;

step4, the pile body 1 is drawn out, then the conventional pile body is hoisted and placed into the deep groove along the track of the supporting member.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a grooving device for Larsen steel sheet pile, includes pile body (1) of vertical setting and water sword mechanism (2) of setting on pile body (1), its characterized in that: the pile body (1) is provided with a supporting piece for supporting the side wall of the deep groove, and the supporting piece is detachably connected to the pile body (1).

2. A grooving apparatus for larsen steel sheet piles according to claim 1, wherein: the supporting piece is arranged to surround a closed supporting cylinder (61) outside the pile body (1), the length direction of the supporting cylinder (61) is parallel to the length direction of the pile body (1), the inner side wall of the supporting cylinder (61) is attached to the outer side face of the pile body (1), and the top end of the supporting cylinder (61) is connected with the top end of the pile body (1) in a threaded mode.

3. A grooving apparatus for larsen steel sheet piles according to claim 1, wherein: the supporting and protecting part is a semi-open supporting and protecting plate (65), the vertical side face, facing the pile body (1), of the supporting and protecting plate (65) is attached to the bottom plate (3) and the two side plates (4) of the pile body (1), and the top end of the supporting and protecting plate (65) is in threaded connection with the top end of the pile body (1).

4. A grooving apparatus for larsen steel sheet piles according to claim 1, wherein: the side of the supporting part far away from the pile body (1) is provided with a stabilizing plate (7), and the length direction of the stabilizing plate (7) is parallel to the length direction of the pile body (1).

5. A grooving apparatus for larsen steel sheet piles according to claim 1, wherein: the pile body (1) perpendicularity correcting mechanism further comprises a correcting mechanism (9) used for correcting the perpendicularity of the pile body.

6. A grooving device for Larsen steel plate piles according to claim 5, wherein: mechanism (9) of rectifying includes that the level sets up foundatin plate (91) in pile body (1) outside and sets up supporting component (92) in foundatin plate (91) bottom surface, the upper surface of foundatin plate (91) is vertical offers logical groove (10) that supply a piece to pass through, it sets up to lead to the cross section that groove (10) match a piece.

7. A grooving device for Larsen steel plate piles according to claim 6, wherein: support assembly (92) include vertical setting at a plurality of supporting legs (921) of foundatin plate (91) bottom surface and respectively threaded connection regulation landing leg (922) on every supporting leg (921), every the bottom of adjusting landing leg (922) all is equipped with backing plate (11).

8. The construction method of the grooving device for the larsen steel sheet piles according to any one of claims 1 to 7, comprising the steps of:

step1, determining the position of the pile to be sunk, marking the position, and placing the deviation correcting mechanism (9) at the marked position;

step2, mounting the supporting part on the pile body (1);

step3, utilizing a beating machine to vibrate downwards to beat the supporting part and the pile body (1) until sinking to a sufficient height;

step4, extracting the pile body (1), then hoisting a new conventional pile body (1) and placing the new conventional pile body into the deep groove along the track of the supporting member.