阅读说明：本技术 一种钢板桩引孔施工钢护筒定位装置与方法 (Steel pile guide hole construction steel casing positioning device and method ) 是由 李明华 王万里 洪莹 彭茂龙 于 2021-10-21 设计创作，主要内容包括：一种钢板桩引孔施工钢护筒定位装置与方法,所述装置包括定位导架(1)、钢管定位桩(2)、钢护筒(3)、锚固销装置(4)、定位卡扣(5)和钢板桩插打卡槽架(6)。定位导架固定于定位桩上,定位卡扣安设在定位导架的工字钢上,并通过锚固销装置与钢护筒进行连接；锚固销装置由可自由转动的固定杆(41)和固定锚块(42)连接而成；钢护筒通过锚固销装置的固定杆连接于定位卡扣上,通过顶部和侧向松紧旋扭把手的松紧实现定位卡扣在工字钢上横向位置的无级调节。本发明产品解决了长期以来钢板桩插打施工过程中不能正确定位与控制垂直度的难题,极大地提高了钢板桩围堰施工的质量与效率,施工操作方便,配套设备少,能极大地降低施工成本。(A steel pile casing positioning device and method for steel sheet pile hole guiding construction are disclosed, wherein the device comprises a positioning guide frame (1), a steel pipe positioning pile (2), a steel casing (3), an anchor pin device (4), a positioning buckle (5) and a steel sheet pile inserting and punching clamping groove frame (6). The positioning guide frame is fixed on the positioning pile, and the positioning buckle is arranged on the I-shaped steel of the positioning guide frame and is connected with the steel casing through the anchoring pin device; the anchoring pin device is formed by connecting a fixed rod (41) and a fixed anchor block (42) which can rotate freely; the steel protects a section of thick bamboo and connects on the location buckle through the dead lever of anchor round pin device, realizes the infinitely variable control of location buckle horizontal position on the I-steel through the elasticity of top and side direction elasticity knob handle. The product of the invention solves the problem that the perpendicularity cannot be correctly positioned and controlled in the steel sheet pile inserting and driving construction process for a long time, greatly improves the quality and efficiency of the steel sheet pile cofferdam construction, has convenient construction operation and few supporting equipment, and can greatly reduce the construction cost.)

1. A steel pile guide hole construction steel pile casing positioning device is characterized by comprising a positioning guide frame, a steel pipe positioning pile, a steel pile casing, an anchor pin device, a fixing buckle and a steel pile inserting and punching groove frame; the positioning guide frame is fixed on the positioning pile, and the positioning buckle is arranged on the I-shaped steel of the positioning guide frame and is fixed and connected with the steel casing through the anchoring pin device; the anchoring pin device is formed by connecting a fixed rod and a fixed anchor block which can rotate freely, namely the fixed rod is adjusted and fixed through the tightness of a knob handle on the fixed anchor block, and the fixed rod is adjusted and fixed with the steel casing through a special anchoring bolt on the fixed anchor block; the steel protecting cylinder is connected to the stepless positioning buckle through a fixed rod of the anchoring pin device, and stepless adjustment of the transverse position of the positioning buckle on the I-shaped steel is realized through the tightness of the top and lateral tightness knob handles; the steel pile casing can also realize the inserting and punching positioning construction of the steel sheet pile through inserting and punching the clamping groove frame by the steel sheet pile installed on the steel pile casing.

2. The steel pile guide hole construction steel casing positioning device of claim 1, wherein the positioning guide frame is a square formed by welding four I-shaped steels; the upper plane and the lower plane of the I-shaped steel are perpendicular to the horizontal plane; four corners of the I-shaped steel vertical intersection are welded and installed on the four steel pipe positioning piles through the fixed steel plates.

3. The steel pile guide hole construction steel casing positioning device of claim 1, wherein the positioning fastener comprises a fastener frame, a top elastic knob handle, a supporting block, a supporting rod, a lateral elastic knob handle and a fixing gasket; the buckle frame is of a G-shaped structure, a bolt with a top tightening knob handle is arranged in the vertical direction of the upper plane, and the buckle frame is fixed on the I-shaped steel in the vertical direction; the lower part of the buckle frame is provided with a U-shaped clamping groove, the width of the U-shaped clamping groove is slightly larger than the thickness of the vertical surface of the I-steel, a bolt with a lateral tightening knob handle is arranged on the side surface of the U-shaped clamping groove, and the buckle frame is fixed on the I-steel from the horizontal direction; two supporting blocks which are separated by a certain distance are welded on the outer side of the vertical plane of the buckling frame at the same horizontal position; the center positions of the side surfaces of the two supporting blocks are provided with through round holes parallel to the vertical plane of the buckle frame, and the through round holes can be inserted with the supporting rods; in order to realize the movable connection of the fixed rod and the supporting blocks, the distance between the two supporting blocks is more than 3 times of the diameter of the fixed rod; the end parts of the two fixed rods are welded with hollow sleeves, and form a T-shaped welding state with the hollow sleeves; the hollow sleeve at the end part of the fixed rod and the through round hole of the supporting block are kept on the same axis, the fixed rod is arranged between the two supporting blocks, and the supporting rod sequentially penetrates through the through round hole in the supporting block and the hollow sleeve at the end part of the fixed rod and penetrates through the through round hole of the other supporting block to complete the connection of the anchoring pin device and the fixed buckle; meanwhile, the free rotation of the fixed rod is ensured; the rotation actions of the two fixed rods on the supporting rod are not interfered with each other.

4. The steel pile casing positioning device for hole guiding construction of a steel sheet pile as claimed in claim 1, wherein four sets of anchor pin devices are arranged on two sides of the outer wall of the steel casing and are respectively fixed at symmetrical positions of the contour line of the outer wall of the steel casing; the two anchoring pin devices are arranged on the outer wall of the steel casing through a steel casing reinforcing plate at a certain distance.

5. The steel pile casing positioning device for steel sheet pile pilot hole construction of claim 4, wherein the anchoring pin device comprises a fixing rod, a fixing anchor block, a knob handle, a screw rod, an anchoring screw rod and a nut; the fixed anchor block is of a rectangular column structure, the cross section in the length direction is square, and the centers of square surfaces at two ends in the length direction of the fixed anchor block are provided with round through holes for inserting fixed rods; a screw hole is formed in the middle of one side face of the fixed anchor block and is vertical to the side face, and the screw hole extends to the round through hole; the side face of the fixed anchor block, which is adjacent to the screw hole, is provided with an elliptical hole in the middle part perpendicular to the side face, the elliptical hole penetrates through the perpendicular circular through hole to a certain depth and then stops, the extension section of the elliptical hole is a circular hole, the circular hole penetrates through the fixed anchor block, the diameter of the circular hole is slightly larger than that of a bolt of the anchoring screw rod, and the circular hole and the elliptical hole are in the horizontal direction and are positioned on the same axis.

6. The positioning device for the steel pile casing for hole guiding construction of the steel sheet pile as claimed in claim 4, wherein the steel sheet pile inserting and clamping groove frame is installed on the inner wall of the steel casing by drilling holes at proper positions of the upper opening and the lower opening of the steel casing, and the holes are perpendicular to the center line of the steel casing; the steel sheet pile inserting and driving clamping groove comprises double rows of steel bar frames, an upper positioning clamping groove, a lower positioning clamping groove and an adjusting nut; the upper positioning clamping groove and the lower positioning clamping groove are respectively arranged on the double rows of steel bar frames, and two ends of the double rows of steel bar frames are arranged on the inner wall of the steel casing through bolts and adjusting nuts; the steel sheet pile inserting and punching clamping groove frame can realize the positioning of inserting and punching the steel sheet pile; only at this time, the steel casing is not pressed into the soil body any more, but placed on the ground; the front and back verticality of the inserted and driven steel sheet pile is controlled by the verticality of the steel casing, and the left and right verticality can be properly adjusted in a moving mode through nuts on the inner side and the outer side of a steel casing hole through positioning clamping grooves.

7. The positioning device for the steel pile guide hole construction steel casing according to claim 1, wherein the positioning method for the steel pile guide hole construction steel casing is as follows:

(1) arranging a positioning guide frame consisting of I-shaped steel or similar section steel at the position 1m inside the steel sheet pile cofferdam; namely, 4 steel pipe piles are driven into the four corners 1m away from the inner side of the cofferdam to serve as positioning piles, positioning guide frames are erected on the positioning piles, and the positioning guide frames need to ensure the overall stability;

(2) preparing a steel casing, and installing anchoring pin devices on the outer walls of two sides of the diameter of the cross section of the steel casing; the fixed anchor block of the anchoring pin device is fixedly arranged on the outer wall of the steel casing through a steel casing reinforcing plate, and the upper part and the lower part of the fixed anchor block are positioned on the same vertical line; the fixed anchor block is fixed on the steel casing through a specially-made anchor bolt and a nut, the anchor bolt consists of a bolt rod and an oval bolt handle, one end of the anchor bolt penetrates through an anchor bolt channel on the fixed anchor block, a steel casing reinforcing plate and the steel casing and then is fixed with the nut on the inner side of the steel casing, and the oval anchor bolt handle is retained in the anchor bolt channel in the fixed anchor block, so that the fixed anchor block can be prevented from being rotated intentionally; the center of the fixed anchor block is fixed with the rod channel, and the fixed rod is fixed or adjusted through a knob handle vertically above the channel opening;

(3) the other end of a fixed rod of the anchoring pin device is connected to the stepless positioning buckle, and a hollow sleeve is welded at the end of the fixed rod and forms a T-shaped welding state with the fixed rod; the supporting rod sequentially penetrates through the through round holes in the supporting blocks and the hollow sleeves at the end parts of the two fixing rods and penetrates through the through round hole in the other supporting block, the hollow sleeve of the fixing rod is arranged at the central positions of the two supporting blocks, the through round holes of the supporting blocks and the centers of the hollow sleeves at the end parts of the fixing rods are ensured to be positioned on the same axis, and after the supporting rod penetrates through the centers, the connection between the anchoring pin device and the fixing buckle is completed; the positioning buckle is fixedly arranged on the positioning guide frame, namely on the I-shaped steel of the positioning guide frame; stepless adjustment of the transverse position of the positioning buckle on the I-shaped steel is realized through the tightness of the top and lateral tightness knob handles;

(4) the device can also realize the inserting, driving and positioning of the steel sheet pile, and the method is that when the steel casing is not pressed into the soil body any more but placed on the ground for a certain height, the double rows of steel bar frames welded with the positioning clamping grooves are inserted through drilling holes at the proper positions of the upper opening and the lower opening of the steel casing, and are adjusted and fixed through the adjusting screw cap at one end of the frame body; the upper positioning clamping groove and the lower positioning clamping groove are kept on the vertical positioning points all the time, and inserting, beating and positioning of the steel sheet pile are achieved.

Technical Field

The invention relates to a steel pile casing positioning device and method for steel sheet pile guide hole construction, and belongs to the technical field of civil engineering.

Background

Steel sheet piles are steel structures with linkages at the edges and which can be freely combined to form a continuous tight retaining or retaining wall.

With the development of the traffic engineering construction in China, the design of the bridge not only needs to meet the traffic requirements of crossing rivers, lakes and seas. But also to meet environmental, landscape and geographical location requirements. In design, the foundation form of the pier in water is designed into a low-pile bearing platform to ensure navigation safety and maximum flow during flood discharge, so that the bearing platform is completely embedded under a riverbed, a bearing platform foundation groove cannot be formed by a mud suction method, and the foundation groove needs to be vertically excavated in a cofferdam. For this situation, a steel sheet pile cofferdam is usually selected for construction.

The inserting and driving construction quality of the steel sheet piles influences the safety and stability of the cofferdam structure and also influences the waterproof effect of the structure, and the steel sheet piles play an important role in the whole cofferdam construction process of the steel sheet piles.

In the bridge pier foundation construction process, often meet some piers and be located weak stratum section, relevant cushion cap then is located the below ground take the altitude, and corresponding cushion cap and some pier stud construction then need adopt the construction of steel sheet pile cofferdam, nevertheless because under special stratum conditions such as weak stratum, there is more difficulty in inserting of steel sheet pile to beat, shows:

firstly, in order to ensure that the steel sheet pile cofferdam has enough rigidity and meet the requirement of integral stress, the steel sheet pile is usually required to be inserted into a certain depth of a harder stratum.

Secondly, when the inserting driving force of the steel sheet piles exceeds a certain value, the steel sheet piles can be driven slowly or cannot be driven;

and thirdly, if a particularly hard stratum is met, a hole guiding machine is needed to guide holes so that the steel sheet piles can be smoothly inserted and driven in place, and correct hole guiding is shown in figure 1.

However, the ground of the engineering position is often not on a plane, and the steel casing is adopted for positioning on the spot without a guide frame for the engineering. In a weak stratum section, the positioning capacity of the steel casing is poor, the steel casing is often displaced along with the vibration of a hole guiding machine during hole guiding construction, the displacement is difficult to find and control, hole guiding deviation is caused, difficulty is brought to inserting and driving of a steel sheet pile, and a failed hole guiding is shown in fig. 2.

During the hole guiding construction, in order to ensure the correctness of the hole guiding position, a steel casing is usually arranged at the position where the hole guiding is needed, so that the hole guiding machine can keep the position as much as possible, and the verticality of the hole guiding is controlled at the same time.

Disclosure of Invention

The invention aims to solve the technical problem of how to realize positioning and movement control of a steel casing and a related device during hole guiding construction, and the device comprises correct positioning and guiding of a hole guiding position, stepless adjustment of the verticality of the steel casing, temporary fixing and maintaining of the hole guiding position, transverse stepless movement and maintaining of the steel casing and the related device, and a positioning and guiding device for inserting and driving a steel sheet pile after mounting positioning clamping grooves on the upper opening and the lower opening of the steel casing.

The technical scheme of the invention is that the steel pile guide hole construction steel casing positioning device comprises a positioning guide frame, a steel pipe positioning pile, a steel casing, an anchor pin device, a positioning buckle and a steel sheet pile inserting and punching clamping groove frame; the positioning guide frame is fixed on the positioning pile, and the positioning buckle is arranged on the I-shaped steel of the positioning guide frame and is fixed and connected with the steel casing through the anchoring pin device; the anchoring pin device is formed by connecting a fixed rod and a fixed anchor block which can rotate freely, namely the fixed rod is adjusted and fixed through the tightness of a knob handle on the fixed anchor block, and the fixed rod is adjusted and fixed with the steel casing through a special anchoring bolt on the fixed anchor block; the steel protecting cylinder is connected to the stepless positioning buckle through a fixed rod of the anchoring pin device, and stepless adjustment of the transverse position of the positioning buckle on the I-shaped steel is realized through the tightness of the top and lateral tightness knob handles; the steel pile casing positioning device can also realize the inserting and punching positioning construction of the steel sheet pile by installing the steel sheet pile inserting and punching clamping groove frame on the steel pile casing.

The positioning guide frame is a square formed by welding four I-shaped steels; the upper plane and the lower plane of the I-shaped steel are perpendicular to the horizontal plane; four corners of the I-shaped steel vertical intersection are welded and installed on the four steel pipe positioning piles through the fixed steel plates.

The positioning buckle comprises a buckle frame, a top elastic knob handle, a supporting block, a supporting rod, a lateral elastic knob handle and a fixed gasket; the buckle frame is of a G-shaped structure, a bolt with a top tightening knob handle is arranged in the vertical direction of the upper plane, and the buckle frame is fixed on the I-shaped steel in the vertical direction; the lower part of the buckle frame is provided with a U-shaped clamping groove, the width of the U-shaped clamping groove is slightly larger than the thickness of the vertical surface of the I-steel, a bolt with a lateral tightening knob handle is arranged on the side surface of the U-shaped clamping groove, and the buckle frame is fixed on the I-steel from the horizontal direction; two supporting blocks which are separated by a certain distance are welded on the outer side of the vertical plane of the buckling frame at the same horizontal position; the center positions of the side surfaces of the two supporting blocks are provided with through round holes parallel to the vertical plane of the buckle frame, and the through round holes can be inserted with the supporting rods; in order to realize the movable connection of the fixed rod and the supporting blocks, the distance between the two supporting blocks is more than 3 times of the diameter of the fixed rod; the end parts of the two fixed rods are welded with hollow sleeves, and form a T-shaped welding state with the hollow sleeves; the hollow sleeve at the end part of the fixed rod and the through round hole of the supporting block are kept on the same axis, the fixed rod is arranged between the two supporting blocks, the supporting rod sequentially penetrates through the through round hole in the supporting block and the hollow sleeve at the end part of the fixed rod and penetrates through the through round hole of the other supporting block, the connection of the anchoring tip device to the fixed buckle is completed, and meanwhile, the free rotation of the fixed rod is ensured; the rotation actions of the two fixed rods on the supporting rod are not interfered with each other.

Four groups of anchor pin devices are arranged on two sides of the outer wall of the steel casing and are respectively fixed at symmetrical positions of the contour line of the outer wall of the steel casing; the two anchoring pin devices are arranged on the outer wall of the steel casing through a steel casing reinforcing plate at a certain distance.

The anchoring pin device comprises a fixing rod, a fixing anchor block, a knob handle, a screw rod, an anchoring screw rod and a screw cap; the fixed anchor block is of a rectangular column structure, the cross section in the length direction is square, and the centers of square surfaces at two ends in the length direction of the fixed anchor block are provided with round through holes; a screw hole is arranged in the middle of one side surface of the fixed anchor block and is vertical to the side surface, and the screw hole extends to a round through hole and is used for inserting a fixed rod; the side face of the fixed anchor block, which is adjacent to the screw hole, is provided with an elliptical hole in the middle part perpendicular to the side face, the elliptical hole penetrates through the perpendicular circular through hole to a certain depth and then stops, the extension section of the elliptical hole is a circular hole, the circular hole penetrates through the fixed anchor block, the diameter of the circular hole is slightly larger than that of a bolt of the anchoring screw rod, and the circular hole and the elliptical hole are in the horizontal direction and are positioned on the same axis.

The steel sheet pile inserting and clamping groove frame is installed on the inner wall of the steel casing by drilling holes at proper positions of an upper opening and a lower opening of the steel casing and perpendicular to the center line of the steel casing; the steel sheet pile inserting and driving clamping groove comprises double rows of steel bar frames, an upper positioning clamping groove, a lower positioning clamping groove and an adjusting nut; the upper positioning clamping groove and the lower positioning clamping groove are respectively arranged on the double rows of steel bar frames, and two ends of the double rows of steel bar frames are arranged on the inner wall of the steel casing through bolts and adjusting nuts; the steel sheet pile inserting and punching clamping groove frame can realize the positioning of inserting and punching the steel sheet pile; only at this time, the steel casing is not pressed into the soil body any more, but placed on the ground; the front and back verticality of the inserted and driven steel sheet pile is controlled by the verticality of the steel casing, and the left and right verticality can be properly adjusted in a moving mode through nuts on the inner side and the outer side of a steel casing hole through positioning clamping grooves.

A method for positioning a steel pile casing positioning device for steel sheet pile hole guiding construction comprises the following steps:

(1) arranging a positioning guide frame consisting of I-shaped steel or similar section steel at about 1m of the inner side of the steel sheet pile cofferdam; namely, 4 steel pipe piles are driven into the four corners about 1m away from the inner side of the cofferdam to serve as positioning piles, positioning guide frames are erected on the positioning piles, and the positioning guide frames need to ensure the overall stability;

(2) preparing a steel casing, and installing anchoring pin devices on the outer walls of two sides of the diameter of the cross section of the steel casing; the fixed anchor block of the anchoring pin device is fixedly arranged on the outer wall of the steel casing through a steel casing reinforcing plate, and the upper part and the lower part of the fixed anchor block are positioned on the same vertical line; the fixed anchor block is fixed on the steel casing through a specially-made anchor bolt and a nut, the anchor bolt consists of a bolt rod and an oval bolt handle, one end of the anchor bolt penetrates through an anchor bolt channel on the fixed anchor block, a steel casing reinforcing plate and the steel casing and then is fixed with the nut on the inner side of the steel casing, and the oval anchor bolt handle is retained in the anchor bolt channel in the fixed anchor block, so that the fixed anchor block can be prevented from being rotated intentionally; the center of the fixed anchor block is fixed with the rod channel, and the fixed rod is fixed or adjusted through a knob handle vertically above the channel opening;

(3) the other end of a fixed rod of the anchoring pin device is connected to the stepless positioning buckle, and a hollow sleeve is welded at the end of the fixed rod and forms a T-shaped welding state with the fixed rod; the supporting rod sequentially penetrates through the through round holes in the supporting blocks and the hollow sleeves at the end parts of the two fixing rods and penetrates through the through round hole in the other supporting block, the hollow sleeve of the fixing rod is arranged at the central positions of the two supporting blocks, the through round holes of the supporting blocks and the centers of the hollow sleeves at the end parts of the fixing rods are ensured to be positioned on the same axis, and after the supporting rod penetrates through the centers, the connection between the anchoring pin device and the fixing buckle is completed; the positioning buckle is fixedly arranged on the positioning guide frame, namely on the I-shaped steel of the positioning guide frame; stepless adjustment of the transverse position of the positioning buckle on the I-shaped steel is realized through the tightness of the top and lateral tightness knob handles.

(4) The device can also realize the inserting, driving and positioning of the steel sheet pile, and the method is that when the steel casing is not pressed into the soil body any more but placed on the ground for a certain height, the double rows of steel bar frames welded with the positioning clamping grooves are inserted through drilling holes at the proper positions of the upper opening and the lower opening of the steel casing, and are adjusted and fixed through the adjusting screw cap at one end of the frame body; the upper positioning clamping groove and the lower positioning clamping groove are kept on the vertical positioning points all the time, and inserting, beating and positioning of the steel sheet pile are achieved.

The invention has the advantages that the invention does not change the prior construction principle and requirements, does not change the prior construction method, and can achieve the aim only by arranging the positioning guide frame at the inner side of the designed steel sheet pile cofferdam and arranging the steel casing positioning guide device on the guide frame. The invention has convenient operation, less matched equipment, meets the requirements of special geological conditions, is easy to be accepted by constructors and can be operated skillfully quickly. The product of the invention solves the problem that the steel sheet pile guide hole construction can not be correctly positioned and controlled for positioning for a long time, greatly improves the quality and efficiency of the steel sheet pile cofferdam construction and reduces the construction cost when dealing with complicated and changeable site construction environments. Along with the increasing of the quantity of the pile foundations in the field bridge construction, the elevation of the bearing platform is continuously reduced, the application amount of the steel sheet pile is continuously increased, and the problem of controlling the position of the guide hole of the steel sheet pile is solved, so that great economic benefits are created for national bridge construction.

The invention solves the problem that the position is difficult to control in the process of steel sheet pile hole guiding construction, can accurately and quickly complete hole guiding construction, ensures the correctness of the hole guiding position, solves the problem that the steel sheet pile is difficult to insert and beat as long as the basic quality of each hole guiding construction is ensured, and can be widely applied to the field of steel sheet pile hole guiding construction. Meanwhile, corresponding steel sheet pile inserting and punching groove frames are arranged near the upper opening and the lower opening of the steel casing of the device, positioning and guiding of inserting and punching of the steel sheet piles can be realized, special positioning and guiding frames do not need to be additionally arranged, a series of problems of positioning and fixing of guide holes of the steel sheet piles, inserting and punching positioning and guiding of the steel sheet piles and the like are realized, and inserting and punching quality of the steel sheet piles is ensured.

Drawings

FIG. 1 is a schematic view of a correct lead hole;

FIG. 2 is a schematic view of a failed via;

FIG. 3 is a schematic plan view of the positioning guide;

FIG. 4 is a three-dimensional schematic view of a positioning guide;

FIG. 5 is an enlarged view A of the positioning guide frame welded and fixed;

FIG. 6 is a schematic view of the assembly of the steel casing positioning device;

FIG. 7 is a schematic view of a support structure of the buckle and the fixing rod;

FIG. 8 is an exploded three-dimensional view of the buckle and the fixing rod support;

FIG. 9 is a schematic view of a stepless adjustment device installation;

FIG. 10 is a schematic view of a fixed anchor block configuration;

FIG. 11 is a cross-sectional view of a fixed anchor block;

FIG. 12 is a schematic view of a steel sheet pile driving slot frame;

FIG. 13 is a front view of a corresponding slot for installing the steel pile inserting and punching slot frame and the steel casing;

in the figure, 1 is a positioning guide frame; 2, a steel pipe positioning pile; 3 is a steel casing; 4 is an anchor pin device; 5 is a positioning buckle; 6, inserting and punching a steel sheet pile into a clamping groove frame; 7 is a steel sheet pile cofferdam device; 11 is I-shaped steel; 12 is a fixed steel plate; 13 is a welding spot; 31 is a steel casing reinforcing plate; 32 is an orifice; 41 is a fixing rod; 42 is a fixed anchor block; 43 is a screw handle; 44 is a screw; 45 is a screw cap; 46 is an anchor bolt with an elliptical bolt handle; 47 is a fixing rod channel; 48 is an oval bolt shank channel; 49 a hollow sleeve; 51 is a top elastic knob handle; 52 is a support block; 53 is a support rod; 54 is a buckle frame; 55 is a lateral elastic knob handle; 56 is a fixed gasket; 61 is a double-row reinforcing steel bar frame; 62 is an upper positioning clamping groove; 63 is a lower positioning clamping groove, and 64 is an adjusting nut.

Detailed Description

As shown in fig. 3 and 4, the positioning device for the steel pile casing for hole guiding construction of the steel sheet pile of the present embodiment includes a positioning guide frame 1, a steel pipe positioning pile 2, a steel pile casing 3, an anchor pin device 4, a positioning buckle 5, and a steel sheet pile insertion and punching groove frame 6.

As shown in fig. 5, the positioning guide 1 is fixed to the positioning pile 2 by welding via a fixing steel plate.

As shown in fig. 6, the steel casing 3 of the present embodiment is connected to the positioning buckle 5 by the fixing rod 41 of the anchor pin device 4. The positioning buckle 5 is arranged on the positioning guide frame 1, namely fixed on the I-shaped steel 11 of the positioning guide frame, and the stepless adjustment of the transverse position of the positioning buckle 5 on the I-shaped steel 11 is realized through the tightness of the top tightening knob handle 51 and the lateral tightening knob handle 55; the outer side of the positioning buckle 5 is connected with a movable fixing rod 41, and the free rotation of the fixing rod 41 is realized; the other end of the fixed rod 41 is inserted into the anchoring pin device 4 fixed on the steel casing 3, and the stepless adjustment of the fixed rod 41 and the positioning and fixing of the steel casing 3 are realized through the tightness of the knob handle 43.

In order to increase the local rigidity of the steel casing, a fixed steel plate 12 is additionally welded on two sides of the anchor pin device 4 to be installed to serve as a reinforcing plate, and the length of the fixed steel plate 12 is equal to the height of the steel casing. The anchoring pin device 4 is installed at appropriate positions of the upper part and the lower part of the fixed steel plate 12: the fixed anchor block of the upper anchoring pin device is arranged at a position 20-50 mm away from the opening of the steel casing, and the fixed anchor block of the lower anchoring pin device is arranged at a position 0.5-0.8 times as high as the steel casing from the fixed anchor block (on the upper side); the steel casing 3 is positioned and fixed by clamping the fixing rod 41 with a knob screw (as shown in fig. 8).

The fixing anchor block 42 of the present embodiment is formed by processing a rectangular solid iron block, and the specific size is selected according to the diameter of the fixing rod 41, so as to satisfy the corresponding strength and rigidity. Generally, the width of the device can be more than 150mm, and the length and the height of the device can be set between 100mm and 150 mm.

The diameter of the central circular hole of the fixed anchor block 42 is about 10mm larger than that of the fixed rod 41, and is 25 mm-35 mm, so that the fixed rod is convenient to mount. The anchoring screw 46 with an oval bolt shank has a thread at one end for engaging the nut 45 and an oval shank-like structure at the other end for anchoring the anchor block 42 and preventing rotation of the screw during tightening.

The diameter of the anchor screw 46 with the oval bolt handle can also be selected according to the diameter of the fixed rod so as to meet the requirements of corresponding strength and rigidity, the steel bar with the length of 12 mm-22 mm can be generally selected for processing, but the oval anti-rotation and pull-out handle-shaped welding and processing are considered, so that the fixed anchor block 42 can be anchored on the steel casing 3 and can normally rotate, and the position of the steel casing 3 can be adjusted and maintained.

To facilitate the installation of the anchor bolt 46 with an oval shank on the anchor block 42, an oval hole is drilled in the anchor block 42, through which the anchor bolt 46 with an oval shank can be inserted during installation. In order to ensure that the fixed anchor block 42 can be anchored on the steel casing 3 and can normally rotate, the hole channel 48 on the anchoring side of the fixed anchor block 42 is composed of two parts, namely an elliptical hole channel which is about 5-10 mm after transversely penetrating through the fixed rod channel 47, and round hole channels which are the rest, wherein the diameter of the round hole channel is about 1-5 mm larger than that of the anchoring bolt 46, so that the anchoring bolt 46 with the elliptical bolt handle can normally penetrate through the hole channel 48 of the fixed anchor block 42, and meanwhile, the elliptical bolt handle of the anchoring bolt 46 with the elliptical bolt handle can prevent the fixed anchor block 42 from being arbitrarily rotated, namely only the anti-rotation handle is embedded into the anchoring inner fixed rod 41 on the side where the anchoring bolt 46 with the elliptical bolt handle is installed (as shown in fig. 10 and 11).

During on-site construction, an anchor bolt 46 with an elliptical bolt handle is inserted into the elliptical hole channel 48, the anchor bolt 46 with the elliptical bolt handle penetrates out of the fixed anchor block 42, the end of the elliptical handle is tightly pressed, a nut 45 is arranged on the inner side of the steel casing 3 and is screwed, and the fixed anchor block 42 is connected and fixed to the steel casing 3. Then the fixing rod 41 is inserted into the fixing rod channel 47 in the fixing anchor block 42, the position is adjusted, the steel casing 3 is pressed into the soil body at the designed position, and finally the handle is screwed, so that the positioning and the fixing of the steel casing 3 can be realized.

In this embodiment, holes 32 are drilled at appropriate positions of the upper opening and the lower opening of the steel casing 3, and a steel sheet pile inserting and driving positioning frame 6 is installed, which includes a double row of steel frames 61, an upper positioning slot 62, a lower positioning slot 63, and adjusting nuts 64 on the inner side and the outer side, so that the positioning of inserting and driving the steel sheet pile can be realized, and only at this time, the steel casing 3 is not pressed into the soil body any more, but placed on the ground. The front and back verticality of the inserted and punched steel sheet pile can be controlled by the verticality of the steel casing 3, and the left and right verticality can be adjusted by appropriate movement of the double-row steel bar clamping grooves in the steel casing hole (as shown in fig. 12 and 13).