CN114045842B - Construction method of deep foundation pit steel sheet pile and anchor cable supporting system - Google Patents

Abstract

The application discloses a construction method of a deep foundation pit steel sheet pile and anchor cable support system, which belongs to the field of deep foundation pit support and comprises the following construction steps: s1, leveling a field, and positioning and paying off; s2, excavating a guide ditch and establishing a surrounding retaining support; s3, driving the connecting pieces into the soil layer in sequence; s4, driving the steel sheet piles into the soil layer in sequence according to the positions of the connecting pieces; s5, mounting a steel crown beam at the top of the steel sheet pile; s6, carrying out earth excavation layer by layer, and after excavating to a design depth, carrying out anchor cable construction by using a connecting piece; s7, fixing adjacent steel sheet piles by using the connecting beams, and ensuring the overall stress of the steel sheet piles; the connecting piece include locating plate and fixed connection in mounting panel on the locating plate, seted up on the mounting panel be used for with the fore shaft grafting complex mounting groove of steel sheet pile. This application has the effect of conveniently retrieving the steel sheet pile.

Description

Construction method of deep foundation pit steel sheet pile and anchor cable supporting system

Technical Field

The application relates to the technical field of deep foundation pit supporting, in particular to a construction method of a deep foundation pit steel sheet pile and anchor cable supporting system.

Background

At present, with the appearance of high-rise buildings, constructors have more requirements on foundation pit engineering, and foundation pit protection in the foundation pit engineering is more important. The common foundation pit protection has many structural types, such as mixing pile support, underground continuous wall support, soil nailing wall support, cast-in-situ bored pile support and the like, and the support mode adopts a support method of steel sheet pile support for part of deep foundation pits due to the fact that the material cost is high and the material cost cannot be recycled.

In the related art, the chinese patent application with publication number CN102817364A discloses a construction method of deep foundation pit steel sheet pile and anchor cable support system, which includes the following steps: (1) Driving steel sheet piles into a soil layer with a designed depth around a deep foundation pit to be excavated; (2) After the steel sheet pile is constructed, welding a steel crown beam under the top of the steel sheet pile by full welding; (3) Carrying out earthwork excavation according to designed excavation depth layers after the construction of the steel crown beam is finished, and carrying out anchor cable construction when the earthwork is excavated to the designed depth, wherein the anchor cable construction comprises the following steps: (a) Drilling anchor cables, installing anchor rod bodies and grouting construction are carried out on the side wall of the deep foundation pit at intervals according to the designed length of the anchor cables; (b) Welding the wale and the steel sheet pile, if a gap exists between the steel sheet pile and the wale, firmly cushioning the gap by using a wedge-shaped steel cushion, and then tightly connecting the wale, the wedge-shaped steel cushion and the steel sheet pile; (c) And when the strength of the anchor rod body is more than 15MPa, tensioning the anchor rod body.

In view of the above-mentioned related technologies, the inventor believes that the installation of the anchor rod body directly on the steel sheet pile may cause a certain damage to the steel sheet pile, easily reduce the anti-seepage performance of the steel sheet pile, and when the constructor prepares to recycle the steel sheet pile, the installation of the anchor rod body may easily obstruct the recycling of the steel sheet pile.

Disclosure of Invention

In order to facilitate the recovery of the steel sheet piles, the application provides a construction method of a deep foundation pit steel sheet pile and anchor rope supporting system.

The construction method of the deep foundation pit steel sheet pile and anchor cable supporting system adopts the following technical scheme:

the construction method of the deep foundation pit steel sheet pile and anchor rope support system comprises the following construction steps:

s1, leveling a field, and positioning and paying off;

s2, excavating a guide trench and establishing a surrounding retaining support;

s3, driving the connecting pieces into the soil layer in sequence;

s4, sequentially driving the steel sheet piles into the soil layer according to the positions of the connecting pieces;

s5, mounting a steel crown beam at the top of the steel sheet pile;

s6, carrying out earth excavation layer by layer, and after excavation reaches the design depth, carrying out anchor cable construction by using the connecting piece;

s7, fixing adjacent steel sheet piles by using the connecting beams, and ensuring the overall stress of the steel sheet piles; the connecting piece includes locating plate and fixed connection in mounting panel on the locating plate, seted up on the mounting panel be used for with the fore shaft grafting complex mounting groove of steel sheet pile.

Through adopting above-mentioned technical scheme, operating personnel is provided with the connecting piece between two adjacent steel sheet piles according to the position of anchor rope, the setting up of connecting piece can strengthen the connection between two adjacent steel sheet piles on the one hand, improve the anti-seepage performance of whole steel sheet pile, the setting up of connecting piece on the other hand can provide the position of installation anchor rope, and then prevent that the anchor rope from installing on the steel sheet pile, thereby make things convenient for operating personnel to retrieve the steel sheet pile, the interval sets up the connecting piece in addition in advance, can effectively rectify the position of steel sheet pile according to the position of connecting piece, and then guarantee the efficiency and the quality of steel sheet pile installation.

Preferably, wear to be equipped with in the locating plate and be used for the closure the closing plate of mounting groove, be provided with in the locating plate and be used for the drive assembly that closing plate removed, seted up on the mounting panel be used for with closing plate sliding fit's spacing groove.

Through adopting above-mentioned technical scheme, operating personnel starts drive assembly, and drive assembly makes the closure plate remove, and when the closure plate removed to spacing inslot, the closure plate plugged up the port of mounting groove, and then prevented that earth in the soil layer from getting into the mounting groove in, made things convenient for the fore shaft of steel sheet pile to slide along the inside wall of mounting groove.

Preferably, drive assembly wears to locate including rotating actuating lever, the fixed cover in the locating plate are located the actuating lever is close to the turning gear and the fixed connection of closing plate tip in the rack on the side of closing plate, turning gear with rack intermeshing, the extension of actuating lever is provided with the knob on the tip of locating plate.

Through adopting above-mentioned technical scheme, operating personnel rotates the knob, and the knob rotates and drives the actuating lever and rotate, and the actuating lever rotates and drives the turning gear rotatory, and the turning gear is rotatory to be made the rack remove, and the rack removes and drives the closure plate and remove, and final closure plate removes to spacing inslot.

Preferably, be provided with on the mounting panel and be used for promoting the push assembly that the fore shaft of steel sheet pile removed, push assembly including slide set up in drive block, fixed connection in the mounting panel in the catch plate on the drive block, be provided with in the mounting panel be used for with the drive block complex guide way that slides, the intercommunication groove has been seted up on the inside wall of guide way, the catch plate with the inside wall in intercommunication groove cooperation that slides, be provided with on the locating plate and be used for the drive the power component that the drive block removed.

Through adopting above-mentioned technical scheme, operating personnel starts power component, and power component makes the drive block remove along the length direction of guide way, and the drive block removes and drives the slurcam removal, and the slurcam removal makes the steel sheet pile fore shaft support the inside wall of tight mounting groove, and then improves the holistic anti-permeability performance of steel sheet pile.

Preferably, the power component is including wearing to locate threaded rod, fixed cover in the locating plate are located first bevel gear, fixed cover on the actuating lever are located second bevel gear on the threaded rod, first bevel gear with second bevel gear intermeshing, just the threaded rod extends to in the locating plate tip inserts the drive piece, just the drive piece with threaded rod screw-thread fit.

By adopting the technical scheme, when an operator utilizes the knob to rotate the driving rod, the driving rod rotates to enable the first bevel gear to rotate, the first bevel gear rotates to enable the second bevel gear to rotate, the threaded rod rotates to enable the second bevel gear to rotate, and the threaded rod rotates to finally enable the driving block to move along the length direction of the threaded rod.

Preferably, the connecting piece is obliquely penetrated and provided with the installation pipe, the connecting piece is provided with a positioning groove matched with the installation pipe in a sliding manner, the installation pipe is internally penetrated and provided with a guide pipe used for installing an anchor cable, the outer side wall of the installation pipe is fixedly connected with a clamping block, the inner side wall of the positioning groove is provided with a clamping groove matched with the clamping block in a sliding manner, and the positioning plate is provided with a fixing component used for fixing the installation pipe.

Through adopting above-mentioned technical scheme, setting up of stand pipe makes things convenient for operating personnel to install the anchor rope, being provided with of anchor rope does benefit to the stability ability that improves whole steel sheet pile, and operating personnel sets up the stand pipe in the aspect of setting up of installation pipe, and the fixture block does benefit to the rotation that the restriction installation was managed with being provided with of draw-in groove, and the setting of fixed subassembly makes things convenient for the position of operating personnel fixed mounting pipe, improves the stability of the installation of installation pipe.

Preferably, the fixing assembly comprises a limiting block slidably penetrating through the positioning plate, a spring fixed on the limiting block and a moving block fixedly connected to the limiting block, a clamping groove used for being in sliding fit with the limiting block is formed in the positioning plate, a moving groove is formed in the inner side wall of the clamping groove, the end portion, far away from the limiting block, of the spring is fixedly connected with the inner end face of the clamping groove, and the moving block penetrates through the moving groove and is in sliding fit with the inner side wall of the moving groove; the end part of the clamping block close to the limiting block is provided with an inclined plane, the end part of the limiting block close to the clamping block is provided with an inclined plane, and the limiting block is matched with the inclined plane of the clamping block.

By adopting the technical scheme, an operator inserts the installation pipe into the positioning groove, when a clamping block on the installation pipe is abutted to the limiting block, the operator continues to push the installation pipe, the limiting block is moved into the clamping groove under the action of the inclined surface, the spring is in a compressed state, when the clamping block passes through the clamping groove and is abutted to the inner end surface of the clamping groove, the limiting block is inserted into the clamping groove under the elastic force action of the spring, and the position of the clamping block is limited by the cooperation of the limiting block and the inner end surface of the clamping groove, so that the position of the installation pipe is finally fixed; when operating personnel utilized the movable block to make the spring be in compression state once more, the installation pipe can be dismantled with the connecting piece and be connected, and then makes things convenient for operating personnel to retrieve the connecting piece.

Preferably, two insertion blocks are slidably arranged in the installation pipe in a penetrating manner, the two insertion blocks are symmetrically arranged, a rotating assembly for driving the insertion blocks to be inserted into a soil layer is arranged on the guide pipe, the rotating assembly comprises a driving ring sleeved on the guide pipe and two hinge rods hinged to the driving ring, the end part, far away from the driving ring, of each hinge rod is hinged to the insertion block, and the driving ring is in threaded fit with the guide pipe; the fixed cover is equipped with solid fixed ring on the stand pipe, gu wear to be equipped with on the fixed ring be used for with installation pipe thread fit's positioning bolt.

Through adopting above-mentioned technical scheme, after operating personnel will install the pipe fixed, operating personnel inserts the stand pipe, operating personnel rotates the stand pipe and makes drive ring and conduit locking, operating personnel promotes the stand pipe and removes the length direction that makes the drive ring follow the stand pipe and removes, the drive ring removes and drives the hinge bar and removes, the hinge bar removes and finally makes the inserted block insert in the soil layer, and then improve the stability ability of whole steel sheet pile, positioning bolt and solid fixed ring set up the convenience operating personnel and strengthen being connected between installation pipe and the stand pipe.

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

1. the connecting pieces are arranged, on one hand, the connection between two adjacent steel sheet piles can be enhanced, the anti-seepage performance of the whole steel sheet pile is improved, on the other hand, the positions for installing the anchor cables can be provided, so that the anchor cables are prevented from being installed on the steel sheet piles, operators can conveniently recover the steel sheet piles, in addition, the connecting pieces are arranged at intervals in advance, the positions of the steel sheet piles can be effectively corrected according to the positions of the connecting pieces, and the efficiency and the quality of installing the steel sheet piles are further ensured;

2. the driving block moves along the length direction of the guide groove by the power assembly, the driving block moves to drive the pushing plate to move, and the pushing plate moves to enable the locking opening of the steel sheet pile to tightly abut against the inner side wall of the installation groove, so that the water seepage resistance of the whole steel sheet pile is improved;

3. after the installation pipe is fixed to operating personnel, operating personnel inserts the stand pipe, operating personnel rotates the stand pipe and makes drive ring and wire conduit locking, operating personnel promotes the stand pipe and removes the length direction that makes the drive ring follow the stand pipe and remove, the drive ring removes and drives the hinge bar and removes, the hinge bar removes and finally makes the inserted block insert in the soil layer, and then improve the stability ability of whole steel sheet pile, positioning bolt and solid fixed ring set up the convenience operating personnel and strengthen being connected between installation pipe and the stand pipe.

Drawings

Fig. 1 is a schematic structural view of a connector according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a driving assembly according to an embodiment of the present application.

Fig. 3 is a schematic view of the internal structure of the connector according to the embodiment of the present application.

Fig. 4 is a schematic view of the internal structure of the installation pipe according to the embodiment of the present application.

Description of reference numerals: 1. steel sheet piles; 11. locking the opening; 12. a steel crown beam; 13. a connecting beam; 2. a connecting member; 21. positioning a plate; 211. a closing plate; 212. positioning a groove; 213. a card slot; 214. a clamping groove; 215. a moving groove; 216. a rubber layer; 217. rotating the cavity; 22. mounting a plate; 221. mounting grooves; 222. a limiting groove; 223. a guide groove; 224. a communicating groove; 3. a drive assembly; 31. a drive rod; 311. a knob; 32. a rotating gear; 33. a rack; 4. a pushing assembly; 41. a drive block; 42. a push plate; 5. a power assembly; 51. a threaded rod; 52. a first bevel gear; 53. a second bevel gear; 6. installing a pipe; 61. a clamping block; 62. inserting a block; 7. a fixing assembly; 71. a limiting block; 72. a spring; 73. a moving block; 8. a guide tube; 81. a fixing ring; 82. positioning the bolt; 83. an anchor cable; 9. a rotating assembly; 91. a drive ring; 92. a hinged lever.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a construction method of a deep foundation pit steel sheet pile and anchor cable supporting system. Referring to fig. 1, the construction method of the deep foundation pit steel sheet pile and anchor cable support system comprises the following construction steps:

s1, an operator firstly cleans a field, removes obstacles on the field, then levels the field by using a mechanical leveling machine, and finally positions and lays lines on the leveled field according to a drawing;

s2, excavating a guide ditch along a designed route by an operator, and establishing a fence support to prevent other personnel from damaging the site;

s3, sequentially driving the connecting piece 2 into the soil layer by using mechanical equipment at a proper position according to the positioning of the anchor cable 83 by an operator;

s4, sequentially driving the steel sheet piles 1 into a soil layer by an operator according to a lower pile axis, constructing the steel sheet piles 1 from the connecting pieces 2 to two sides respectively, ensuring stable connection between the steel sheet piles 1, and paying attention to the fact that the length of each steel sheet pile 1 is twice as long as the depth of a foundation pit and the top of each steel sheet pile 1 exceeds the ground of the site by one meter;

s5, when an operator finishes installing the steel crown beam 12 at the upper end of the steel sheet pile 1;

s6, carrying out earth excavation layer by layer, and after the earth excavation is carried out to the set depth, carrying out anchor cable 83 construction by using the connecting piece 2;

and S7, fixing the adjacent steel sheet piles 1 by using the connecting beams 13, and ensuring the integral stress of the steel sheet piles 1.

Referring to fig. 1 and 2, the connecting members 2 are provided in plurality, the plurality of connecting members 2 are arranged at intervals along the length direction of the guide channel, and the connecting members 2 include a positioning plate 21 and a mounting plate 22. Locating plate 21 and the equal vertical setting of mounting panel 22, and mounting panel 22 and locating plate 21 integrated into one piece, mounting panel 22 both sides are all offered and are used for pegging graft complex mounting groove 221 with the fore shaft 11 of steel sheet pile 1.

Referring to fig. 1 and 2, two closing plates 211 are slidably disposed through a single positioning plate 21, two limiting grooves 222 are disposed in the mounting plate 22, and the two limiting grooves 222 correspond to the two closing plates 211 one to one. The cross section of the limiting groove 222 is rectangular, the limiting groove 222 is communicated with the mounting groove 221, and the closed plate 211 is matched with the inner side wall of the limiting groove 222 in a sliding manner. The provision of the closure plate 211 facilitates the closure of the mounting groove 221 by an operator, thereby preventing soil from entering the mounting groove 221 when the connecting member 2 is inserted into a soil layer.

Referring to fig. 1 and 2, a driving assembly 3 for driving the closing plate 211 to move is disposed in the positioning plate 21, and the driving assembly 3 includes a driving rod 31, a rotating gear 32, and a rack 33. The driving rod 31 vertically penetrates through the positioning plate 21, the driving rod 31 is rotatably connected with the positioning plate 21, the end part of the driving rod 31 extending out of the positioning plate 21 is provided with a knob 311, and the knob 311 is fixedly connected with the positioning plate 21. The rotating gear 32 is sleeved at the end of the closing plate 211 close to the driving rod 31, and the rotating gear 32 is fixedly connected with the driving rod 31. The rack 33 is arranged on the side surface of the closing plate 211 close to the rotating gear 32, the rack 33 is fixedly connected with the closing plate 211, and the rack 33 is meshed with the rotating gear 32. An operator rotates the knob 311, the knob 311 rotates to drive the driving rod 31 to rotate, the driving rod 31 rotates to enable the rotating gear 32 to rotate, the rotating gear 32 rotates to enable the rack 33 to move, the rack 33 moves to finally enable the closing plate 211 to be inserted into the limiting groove 222, the installing groove 221 is further sealed, and soil is prevented from entering the installing groove 221.

Referring to fig. 1 and 3, three groups of pushing assemblies 4 are arranged in the mounting plate 22, the three groups of pushing assemblies 4 are arranged at intervals along the height direction of the mounting plate 22, each group of pushing assemblies 4 includes a driving block 41 and a pushing plate 42, the driving block 41 is arranged in the mounting plate 22 in a penetrating manner, a guide groove 223 used for being matched with the driving block 41 in a sliding manner is formed in the mounting plate 22, and the guide groove 223 is communicated with the mounting groove 221 through a communicating groove 224. The pushing plate 42 is fixedly connected to the outer side wall of the driving block 41 close to the mounting groove 221, and the pushing plate 42 penetrates through the communication groove 224 and is in sliding fit with the inner side wall of the communication groove 224. The rubber layer 216 is fixedly connected to the side face, close to the mounting plate 22, of the positioning plate 21, the length direction of the rubber layer 216 is identical to the length direction of the positioning plate 21, the rubber layer 216 abuts against the locking notch 11 of the steel sheet pile 1, and the rubber layer 216 is arranged to improve the overall anti-permeability performance of the steel sheet pile 1.

Referring to fig. 1 and 3, a power assembly 5 for moving the driving block 41 is disposed on the positioning plate 21, the power assembly 5 includes a threaded rod 51, a first bevel gear 52 and a second bevel gear 53, the threaded rod 51 is disposed in the positioning plate 21, and the threaded rod 51 is rotatably connected to the positioning plate 21. A rotating cavity 217 is arranged in the positioning plate 21, the cross section of the rotating cavity 217 is rectangular, one end of a threaded rod 51 extends into the rotating cavity 217, the other end of the threaded rod 51 extends into a guide groove 223 of the mounting plate 22, the end portion of the threaded rod 51 extending to the mounting plate 22 is inserted into the driving block 41, and the threaded rod 51 is in threaded fit with the driving block 41. The second bevel gear 53 is arranged in the rotating cavity 217, the end part of the threaded rod 51 far away from the driving block 41 is sleeved with the second bevel gear 53, and the second bevel gear 53 is fixedly connected with the threaded rod 51. The first bevel gear 52 is sleeved at the end of the driving rod 31 close to the second bevel gear 53, the first bevel gear 52 is fixedly connected with the driving rod 31, and the first bevel gear 52 is meshed with the second bevel gear 53.

Referring to fig. 1 and 2, when the operator rotates the driving rod 31 by using the knob 311, the driving rod 31 rotates to retract the closing plate 211 entering the limiting groove 222 into the positioning plate 21 through the cooperation of the rotating gear 32 and the rack 33; as shown in fig. 3, the rotation of the driving rod 31 on the other hand rotates the threaded rod 51 through the engagement of the first bevel gear 52 and the second bevel gear 53, the engagement of the pushing plate 42 and the communicating groove 224 is beneficial to limit the rotation of the driving block 41, so that the rotation of the threaded rod 51 moves the driving block 41 along the length direction of the threaded rod 51. The driving block 41 moves to drive the pushing plate 42 to move, so that the locking notch 11 of the steel sheet pile 1 is finally attached to the rubber layer 216 on the inner side wall of the mounting groove 221, and the anti-permeability performance of the steel sheet pile 1 is further improved.

Referring to fig. 1 and 4, the connecting piece 2 is obliquely provided with three installation pipes 6 in a penetrating manner, and the three installation pipes 6 are arranged at intervals along the length direction of the connecting piece 2. The installation pipe 6 is circular tubulose, two fixture blocks 61 of fixedly connected with on the lateral wall of installation pipe 6, two fixture block 61 symmetrical arrangement. Locating slot 212 is opened on locating plate 21, and the inside wall of installation pipe 6 and locating slot 212 is the cooperation of sliding, and has opened two draw-in grooves 213 on the inside wall of locating slot 212, and two draw-in grooves 213 are with two fixture blocks 61 one-to-one, and the inside wall of fixture block 61 and draw-in groove 213 is the cooperation of sliding.

Referring to fig. 1 and 4, be provided with the fixed subassembly 7 that is used for fixed mounting pipe 6 on the locating plate 21, fixed subassembly 7 includes stopper 71, spring 72 and movable block 73, and in the locating plate 21 was worn to locate by stopper 71, seted up joint groove 214 in the locating plate 21, joint groove 214 was linked together with draw-in groove 213, stopper 71 and the cooperation of sliding of the inside wall in joint groove 214. The end part of the limiting block 71 close to the clamping block 61 is provided with an inclined plane, the end part of the clamping block 61 close to the limiting block 71 is provided with an inclined plane, and the limiting block 71 and the clamping block 61 are matched with each other in the inclined plane. Spring 72 sets up in joint groove 214, spring 72 one end and joint groove 214's inside wall fixed connection, spring 72 other end and stopper 71 fixed connection. The moving block 73 is arranged on the side surface of the limiting block 71 away from the mounting plate 22, a moving groove 215 is formed in the side surface of the positioning plate 21 away from the mounting plate 22, the length direction of the moving groove 215 is consistent with the length direction of the clamping groove 214, the moving groove 215 is communicated with the clamping groove 214, and the moving block 73 penetrates through the moving groove 215 and is in sliding fit with the inner side wall of the moving groove 215.

Referring to fig. 1 and 4, an operator aligns the fixture block 61 with the fixture groove 213, then, the operator inserts the installation tube 6 into the positioning groove 212, when the fixture block 61 on the installation tube 6 abuts against the limiting block 71, the operator continues to push the installation tube 6, the limiting block 71 moves into the clamping groove 214 under the action of the inclined plane at the moment, the spring 72 is in a compression state, when the clamping groove 214 through which the fixture block 61 passes abuts against the inner end face of the fixture groove 213, the limiting block 71 is inserted into the fixture groove 213 under the elastic action of the spring 72, the matching of the limiting block 71 and the inner end face of the fixture groove 213 is favorable for limiting the position of the fixture block 61, and finally, the position of the installation tube 6 is fixed.

Referring to fig. 1 and 4, a guide pipe 8 for installing an anchor cable 83 penetrates through the installation pipe 6, a fixing ring 81 is sleeved on the end portion, close to the positioning plate 21, of the guide pipe 8, a fixing bolt 82 penetrates through the fixing ring 81, and the fixing bolt 82 penetrates through the fixing ring 81 and is in threaded fit with the installation pipe 6. Two insert blocks 62 are slidably arranged on the inner side wall of the installation pipe 6 in a penetrating manner, the two insert blocks 62 are symmetrically arranged relative to the axis of the installation pipe 6, a rotating assembly 9 for driving the insert blocks 62 to insert into a soil layer is arranged in the installation pipe 6, the rotating assembly 9 comprises a driving ring 91 and two hinged rods 92, the driving ring 91 is sleeved on the guide pipe 8, the driving ring 91 is in threaded fit with the guide pipe 8, the two hinged rods 92 are arranged, the two hinged rods 92 correspond to the two insert blocks 62 one to one, one end of each hinged rod 92 is hinged to the driving ring 91, and the other end of each hinged rod 92 is hinged to the insert block 62.

Referring to fig. 1 and 4, after an operator fixes the installation pipe 6, the operator inserts the guide pipe 8, then the operator rotates the guide pipe 8 to lock the guide pipe 8 with the drive ring 91, then the operator pushes the fixing ring 81, the fixing ring 81 drives the guide pipe 8 and the drive ring 91 to move, the drive ring 91 moves to drive the hinge rod 92 to move, the hinge rod 92 moves to finally enable the insertion block 62 to be inserted into the soil layer, and then the stability of the whole steel sheet pile 1 is improved, the positioning bolts 82 and the fixing ring 81 are arranged to facilitate the operator to strengthen the connection between the installation pipe 6 and the guide pipe 8.

The implementation principle of the construction method of the deep foundation pit steel sheet pile 1 and anchor rope 83 supporting system in the embodiment of the application is as follows: the position of operating personnel according to anchor rope 83 is provided with connecting piece 2 between two adjacent steel sheet piles 1, connecting piece 2 set up on the one hand and can strengthen the connection between two adjacent steel sheet piles 1, improve whole steel sheet pile 1's prevention of seepage performance, connecting piece 2 set up the position that on the other hand can provide installation anchor rope 83, and then prevent that anchor rope 83 from installing on steel sheet pile 1, thereby make things convenient for operating personnel to retrieve steel sheet pile 1, the connecting piece 2 that the interval set up in addition, can effectively rectify steel sheet pile 1's position according to connecting piece 2, and then guarantee the efficiency and the quality of steel sheet pile 1 installation.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, 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 (5)

1. A construction method of a deep foundation pit steel sheet pile and anchor cable supporting system is characterized by comprising the following steps: the method comprises the following construction steps:

s1, leveling a field, positioning and setting out;

s2, excavating a guide trench and establishing a surrounding retaining support;

s3, driving the connecting pieces (2) into a soil layer in sequence;

s4, sequentially driving the steel sheet piles (1) into a soil layer according to the positions of the connecting pieces (2);

s5, mounting a steel crown beam (12) at the top of the steel sheet pile (1);

s6, carrying out earth excavation layer by layer, and after excavation reaches the design depth, carrying out anchor cable (83) construction by using the connecting piece (2);

s7, fixing the adjacent steel sheet piles (1) by using the connecting beams (13) to ensure the overall stress of the steel sheet piles (1); the connecting piece (2) comprises a positioning plate (21) and a mounting plate (22) fixedly connected to the positioning plate (21), wherein the mounting plate (22) is provided with a mounting groove (221) which is used for being in splicing fit with the locking notch (11) of the steel sheet pile (1);

a closing plate (211) used for closing the mounting groove (221) penetrates through the positioning plate (21), a driving assembly (3) used for driving the closing plate (211) to move is arranged in the positioning plate (21), and a limiting groove (222) used for being matched with the closing plate (211) in a sliding mode is formed in the mounting plate (22);

the driving assembly (3) comprises a driving rod (31) rotatably arranged in the positioning plate (21) in a penetrating mode, a rotating gear (32) fixedly sleeved on the end portion, close to the closing plate (211), of the driving rod (31), and a rack (33) fixedly connected to the side face of the closing plate (211), the rotating gear (32) is meshed with the rack (33), and a knob (311) is arranged on the end portion, extending out of the positioning plate (21), of the driving rod (31);

be provided with on mounting panel (22) and be used for promoting push assembly (4) that fore shaft (11) of steel sheet pile (1) removed, push assembly (4) including slide set up in driving block (41), fixed connection in mounting panel (22) in push plate (42) on driving block (41), be provided with in mounting panel (22) be used for with driving block (41) complex guide way (223) that slides, intercommunication groove (224) have been seted up on the inside wall of guide way (223), push plate (42) with the cooperation of sliding of the inside wall of intercommunication groove (224), be provided with on locating plate (21) and be used for the drive power component (5) that driving block (41) removed.

2. The construction method of the deep foundation pit steel sheet pile and anchor cable support system according to claim 1, characterized in that: power component (5) is including wearing to locate threaded rod (51), fixed cover in locating plate (21) are located first bevel gear (52) on actuating lever (31), fixed cover are located second bevel gear (53) on threaded rod (51), first bevel gear (52) with second bevel gear (53) intermeshing, just threaded rod (51) extend to in tip in locating plate (21) inserts drive block (41), just drive block (41) with threaded rod (51) screw-thread fit.

3. The construction method of the deep foundation pit steel sheet pile and anchor cable supporting system according to claim 1, characterized in that: install pipe (6) is worn to be equipped with on connecting piece (2) the slope, seted up on connecting piece (2) be used for with installation pipe (6) complex constant head tank (212) that slides, wear to be equipped with stand pipe (8) that are used for installing anchor rope (83) in installation pipe (6), fixedly connected with fixture block (61) on the lateral wall of installation pipe (6), seted up on the inside wall of constant head tank (212) be used for with fixture block (61) complex draw-in groove (213) that slides, be provided with on locating plate (21) and be used for fixing fixed subassembly (7) of installation pipe (6).

4. The construction method of the deep foundation pit steel sheet pile and anchor cable supporting system according to claim 3, characterized in that: the fixing assembly (7) comprises a limiting block (71) which is slidably arranged on the positioning plate (21) in a penetrating manner, a spring (72) fixed on the limiting block (71) and a moving block (73) fixedly connected to the limiting block (71), a clamping groove (214) which is used for being matched with the limiting block (71) in a sliding manner is formed in the positioning plate (21), a moving groove (215) is formed in the inner side wall of the clamping groove (214), the end part, far away from the limiting block (71), of the spring (72) is fixedly connected with the inner end face of the clamping groove (214), and the moving block (73) penetrates through the moving groove (215) and is matched with the inner side wall of the moving groove (215) in a sliding manner; the end part of the limiting block (61) close to the limiting block (71) is provided with an inclined plane, the end part of the limiting block (71) close to the limiting block (61) is provided with an inclined plane, and the limiting block (71) is matched with the inclined plane of the limiting block (61).

5. The construction method of the deep foundation pit steel sheet pile and anchor cable supporting system according to claim 3, characterized in that: two insert blocks (62) are slidably arranged in the mounting pipe (6) in a penetrating manner, the two insert blocks (62) are symmetrically arranged, a rotating assembly (9) for driving the insert blocks (62) to be inserted into soil layers is arranged on the guide pipe (8), the rotating assembly (9) comprises a driving ring (91) sleeved on the guide pipe (8) and two hinged rods (92) hinged to the driving ring (91), the end parts, far away from the driving ring (91), of the hinged rods (92) are hinged to the insert blocks (62), and the driving ring (91) is in threaded fit with the guide pipe (8); the fixed cover is equipped with solid fixed ring (81) on stand pipe (8), gu wear to be equipped with on fixed ring (81) be used for with installation pipe (6) screw-thread fit's positioning bolt (82).

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