A construction device and method for prefabricated bridge pile foundation bypass plates

Abstract

This invention discloses a construction device and method for a prefabricated bridge pile foundation bypass plate. The construction device includes a supporting disc and a fixing foot device. The supporting disc is mounted on top of the bypass plate. The fixing foot device is connected to the mortise and tenon joint at the bottom of the supporting disc via tenon and mortise fasteners, and is further fixed by bolts, forming the construction device for the prefabricated bridge pile foundation bypass plate. The center of the supporting disc is aligned with the center of gravity of the lower-level bypass plate structure and connected to the fixing foot device by bolts. After connecting the construction device for the prefabricated bridge pile foundation bypass plate to the bypass plate, a pile driver is used to align and press the supporting disc into place. The construction device and method for the prefabricated bridge pile foundation bypass plate provided by this invention improve construction efficiency and provide a construction solution for special devices.

Description

Technical Field

[0001] This invention relates to the field of bridge pier pile foundation technology, specifically to a prefabricated pile foundation construction device and construction method. Background Technology

[0002] As a crucial component of infrastructure, the safety of bridges must be fully guaranteed. (See also...) Figure 1 With rapid urban development, highway bridges previously located in the suburbs may become elevated bridges within the city within a few years, and will be affected by other urban infrastructure construction. For example, in some areas, bridges will intersect or run parallel to newly built highways. During the construction of highway embankments, a surcharge effect will occur. If there is a thick layer of soft soil under the embankment, the underlying soft soil will experience significant lateral displacement under the surcharge load of the overlying embankment, and may even "flow." This will subject the nearby bridge pile foundations to additional horizontal loads, generating additional internal forces, affecting the bridge's operational safety, and may even lead to structural damage.

[0003] Therefore, it is necessary to provide a device that can reduce the adverse effects of surcharge on bridges, and to provide corresponding construction equipment and methods for the device, so as to effectively protect the bridge pile foundation in soft soil during the construction of adjacent embankments and improve the safety of the bridge. Summary of the Invention

[0004] Since bridge pile foundations in soft soil are easily affected by the horizontal additional load generated by the new surface load nearby, corresponding pile foundation protection devices are required. In order to solve the technical problem of the inconvenience of constructing bypass plates for providing protection for bridge pile foundations, this invention provides a construction device and construction method for prefabricated bridge pile foundation bypass plates that can effectively improve construction efficiency.

[0005] To achieve the above-mentioned technical objectives, the technical solution of the present invention is as follows:

[0006] A construction device for a prefabricated bridge pile foundation bypass plate includes a support disc and two fixing feet. The support disc is a horizontally positioned disc-shaped body, with connection ports at its bottom for connecting the two fixing feet. The tops of the fixing feet are equipped with connectors that match the connection ports, allowing them to be connected to the bottom of the support disc. The two fixing feet extend in intersecting directions, and their bottoms are equipped with fittings for assembling the bypass plate. The bypass plate is assembled below the support disc, comprising two sidewalls connected at one end to form a bypass guide, and unconnected at the other end to form an opening. The bypass guide faces the direction of the additional load generated by the surcharge, and the opening faces the pile foundation.

[0007] The construction device for a prefabricated bridge pile foundation bypass plate, wherein the connection port is a groove-shaped interface, part of which is a rectangular groove and the other part is a dovetail tenon groove, wherein the tenon groove is wider at the top and narrower at the bottom, the width of the rectangular groove is not less than the width of the widest part of the tenon groove, and the length is not less than the length of the tenon groove. The connector is a dovetail tenon that matches the tenon groove.

[0008] The construction device for the prefabricated bridge pile foundation bypass plate is provided with a screw hole at the bottom of the bearing disc. The fixing foot device is provided with a bolt fixing ring on the edge of the contact surface with the bearing disc. The position of the bolt fixing ring is matched with the position of the screw hole after the connector is connected to the connection port, so that the bolt passes through the bolt fixing ring and is screwed into the screw hole, thereby further fixing the fixing foot device to the bottom of the bearing disc.

[0009] The aforementioned construction device for a prefabricated bridge pile foundation bypass plate includes a fixed foot device comprising an outer fixed wing and an inner fixed wing that are parallel to each other. The top of both the outer and inner fixed wing is provided with a connector and a bolt fixing ring, and the bottom of the supporting disc is provided with a connecting port and a screw hole for connecting the outer and inner fixed wing respectively. At least one through hole with mutually matching positions is provided on the side of both the outer and inner fixed wing. A bolt passes through the through hole on the outer fixed wing, the opening at the top of the bypass plate sidewall, and the through hole on the inner fixed wing simultaneously from one side, engaging with a nut on the other side to fix the bypass plate sidewall to the fixed foot device.

[0010] The construction device for a prefabricated bridge pile foundation bypass plate, wherein the inner wall shape of the outer fixed wing and the inner fixed wing matches the shape of the side wall of the bypass plate, and the distance between the outer fixed wing and the inner fixed wing matches the thickness of the side wall of the bypass plate.

[0011] The construction device for the prefabricated bridge pile foundation bypass plate has at least three vent holes penetrating the top and bottom surfaces on the supporting disc. The center of the pattern formed by sequentially connecting all the vent holes coincides with the center of the supporting disc.

[0012] A construction method for a prefabricated bridge pile foundation bypass plate, based on the aforementioned construction device, includes the following steps:

[0013] S1: The two side walls of the flow plate are clamped by two fixing feet, and bolts are used to pass through the fixing feet and the side walls to cooperate with the nuts for fixation.

[0014] S2: Lift the construction device with the fixed flow plate to the position to be buried at the bridge pile foundation.

[0015] S3: Pressurize the construction device to bury the flow plate to the predetermined depth.

[0016] In the construction method described above, step S1, before using the fixed feet to clamp the two side walls of the flow bypass plate, further includes a step of determining the center of gravity position of the prefabricated bridge pile foundation flow bypass plate and aligning it with the center of gravity of the construction device.

[0017] In the aforementioned construction method, step S2 involves lifting the construction device by passing a sling through the vent hole on the supporting disc and then lifting it.

[0018] In the aforementioned construction method, step S3 involves pressurizing the construction device by aligning the pile hammer of the pile driver with the bearing disc.

[0019] The technical advantage of this invention lies in the fact that the construction device is assembled using a modular method, with the supporting disc and two fixing feet connected by mortise and tenon joints, facilitating assembly. Furthermore, the use of bolted connections to the flow-around plate reduces assembly complexity, thereby effectively lowering costs and shortening the construction period. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0021] Figure 1 This is a background diagram of the present invention.

[0022] Figure 2 This is a schematic diagram of the construction device for the prefabricated bridge pile foundation bypass plate provided in this embodiment.

[0023] Figure 3 This is a bottom view of the construction equipment.

[0024] Figure 4 This is a schematic diagram of the assembly of the construction equipment, in which... Figure 4 (a) is a schematic diagram of the fixed foot device being vertically inserted into the bearing disk; Figure 4 (b) is a schematic diagram of the fixing foot device being pushed horizontally into the tenon and mortise; Figure 4 (c) is a schematic diagram showing the fixed foot device and the bearing disc being limited by bolts.

[0025] Figure 5 A schematic diagram of the construction device for the prefabricated bridge pile foundation bypass plate provided by the present invention in use.

[0026] Figure 6 for Figure 5The enlarged cross-sectional view in the middle A section is a schematic diagram of the connection between the construction device of the prefabricated bridge pile foundation bypass plate and the applicable bypass plate device.

[0027] In the diagram: 1 is the bearing disc, 2 is the fixing foot device, 21 is the inner fixing wing, 22 is the outer fixing wing, 400 is the flow plate, and 500 is the pile foundation. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] See Figures 2-4 The construction device for the prefabricated bridge pile foundation bypass plate provided in this embodiment includes: a supporting disc 1 and a fixing foot device 2. The supporting disc 2 is mounted on the top of the bypass plate 400. In this embodiment, the fixing foot device 2 is connected to the bottom end of the supporting disc 1 through a dovetail tenon structure in the mortise and tenon structure, and is further fixed by bolts to control the lateral displacement freedom, thus forming a construction device for the prefabricated bridge pile foundation bypass plate together with the supporting disc 1.

[0030] Specifically, this embodiment includes a support disk and two fixing feet. The support disk is a horizontally positioned disc-shaped body, and its bottom has connection ports for connecting the two fixing feet. The top of each fixing foot has a connector that matches the connection port, so that the fixing foot is connected to the bottom of the support disk through the connection port. The two fixing feet extend in opposite directions, and their bottoms have fittings for assembling a flow-rotating plate, so that a flow-rotating plate is assembled below the support disk.

[0031] In this embodiment, the connection port is a groove-shaped interface, with one part being a rectangular groove and the other part being a dovetail tenon joint. The tenon joint is wider at the top and narrower at the bottom, with the width of the rectangular groove not less than the width of the widest part of the tenon joint, and the length not less than the length of the tenon joint. The connector in this embodiment is a dovetail tenon joint that matches the tenon joint. When installing the fixing foot device, it is first inserted into the rectangular groove in the front half, and then the fixing foot device 2 is slid into the mortise and tenon joint.

[0032] To further secure the fixing foot device, the bottom of the bearing disc in this embodiment is also provided with a screw hole. The fixing foot device is also provided with a bolt fixing ring on the edge of the contact surface with the bearing disc. The position of the bolt fixing ring is matched with the position of the screw hole after the connector is connected to the connector port, so that the bolt passes through the bolt fixing ring and is screwed into the screw hole, thereby further fixing the fixing foot device to the bottom of the bearing disc, so as to ensure that there is no relative sliding between the bearing disc 1 and the fixing foot device 2.

[0033] The fixing foot device 2 in this embodiment has two sets, each set having two fixing wings. Each set of fixing wings includes an outer fixing wing 22 and an inner fixing wing 21. Both the outer and inner fixing wings have connectors and bolt fixing rings at their tops, and the bottom of the supporting disc has connecting ports and screw holes for connecting the outer and inner fixing wings, respectively. The outer and inner fixing wings have at least one through hole on their sides that are matched in position. Bolts are simultaneously passed through the through hole on the outer fixing wing, the opening at the top of the flow plate sidewall, and the through hole on the inner fixing wing from one side, to engage with a nut on the other side to fix the flow plate sidewall to the fixing foot device. The inner wall shape of the outer and inner fixing wings matches the shape of the flow plate sidewall, and the distance between the outer and inner fixing wings matches the thickness of the flow plate sidewall.

[0034] In this embodiment, the supporting disc has three vent holes penetrating the top and bottom surfaces. The center of the triangular pattern formed by sequentially connecting all the vent holes coincides with the center of the supporting disc. In practical implementation, the number of vent holes can be further increased as needed. To facilitate hoisting using slings passing through the vent holes, it must be ensured that the center of the pattern formed by the vent holes coincides with the center of the supporting disc.

[0035] See Figures 5-6 This embodiment also provides a construction method for prefabricated bridge pile foundation bypass plates, including the following steps:

[0036] S1: In order to prevent the device from deflecting or shifting when it is pressed into the stratum, the pressing center should be located at the center of gravity of the bypass plate device. After determining the center of gravity of the bypass plate device for the bridge pile foundation, align it with the center of gravity of the construction device for the prefabricated bridge pile foundation bypass plate. Use the fixing foot device 2 to clamp the bypass plate 400 and fix the position with bolts to ensure that the construction device and the bypass plate device are tightly connected.

[0037] S2: Use slings to pass through the three vent holes on the bearing disc and lift the construction device and the bypass plate device of the prefabricated bridge pile foundation. Adjust the offset during lifting to keep the device as stable as possible.

[0038] S3: Align the pile hammer of the pile driver construction equipment with the bearing disk 1 and press the construction device of the prefabricated bridge pile foundation bypass plate into place.

[0039] In this embodiment, the flow-around plate includes two sidewalls connected at one end to form a flow-around guide, and disconnected at the other end to form an opening. The flow-around guide faces the direction of the additional load generated by the surcharge, and the opening faces the pile foundation. By pre-arranging the flow-around plate on the side of the pile foundation that will be affected by the lateral load of the soil, the size of the opening of the flow-around plate is not less than the diameter of the pile foundation, and the extension lines at both ends of the opening cover the pile foundation in the center without intersecting with the pile foundation. Under the influence of the prefabricated bridge pile foundation protection device that reduces the surcharge mechanical effects of silt strata, the lateral displacement of the soil will "separate" at the top of the flow-around guide. The displacement pattern of the soil will tend to bypass the flow-around guide and continue to slide along the diversion side plate to bypass the pile foundation, reduce the concentration of lateral earth pressure on the pile foundation, and reduce the additional internal force and deformation of the pile foundation.

[0040] The above are merely embodiments of the present invention. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements all fall within the protection scope of the present invention.

Claims

1. An assembled bridge pile foundation flow around plate construction device, characterized in that, The application relates to a construction device for assembling a flow-around plate for a pile foundation of a bridge, which comprises a bearing disc and two fixing leg devices; the bearing disc is a horizontally arranged disc-shaped body, the bottom of the bearing disc is provided with connecting ports for connecting the two fixing leg devices respectively; the top of the fixing leg device is provided with connecting pieces matched with the connecting ports, so that the fixing leg device is connected to the bottom of the bearing disc through the connecting ports; the extending directions of the two fixing leg devices are crossed with each other, and the bottom of the two fixing leg devices is provided with assembling pieces for assembling the flow-around plate, so that the flow-around plate is assembled below the bearing disc; the flow-around plate comprises two side walls, and the two side walls are connected to each other at one end to form a flow-around head and are not connected to each other at the other end to form an opening; the flow-around head is used for the direction of additional load formed by piling up, and the opening is used for the direction of the pile foundation. The connecting port is a slot-shaped interface, and one part is a rectangular slot, and the other part is a dovetail structure tenon groove, wherein the tenon groove is wide at the top and narrow at the bottom, the width of the rectangular slot is not less than the width of the widest part of the tenon groove, and the length is not less than the length of the tenon groove; the connecting piece is a dovetail structure tenon head matched with the tenon groove; The bottom of the bearing disc is also provided with a screw hole, the fixing leg device is also provided with a bolt fixing ring on the edge of the contact surface with the bearing disc, and the position of the bolt fixing ring is matched with the position of the screw hole after the connecting piece is connected to the connecting port, so that the bolt passes through the bolt fixing ring and is screwed into the screw hole, thereby further fixing the fixing leg device to the bottom of the bearing disc; Each of the fixing leg devices comprises an outer side fixing wing and an inner side fixing wing which are parallel to each other, the top of the outer side fixing wing and the inner side fixing wing is provided with a connecting piece and a bolt fixing ring, and the bottom of the bearing disc is provided with a connecting port and a screw hole for connecting the outer side fixing wing and the inner side fixing wing respectively; at least one through hole is arranged on the side surface of the outer side fixing wing and the inner side fixing wing, and the through hole is matched with the position of the other side, and the bolt passes through the through hole on the outer side fixing wing, the opening at the top of the flow-around plate side wall and the through hole on the inner side fixing wing from one side to fix the flow-around plate side wall on the fixing leg device by cooperating with the nut on the other side.

2. The construction device of a fabricated bridge pile foundation flow around plate according to claim 1, characterized in that, The inner wall shape of the outer side fixing wing and the inner side fixing wing is matched with the shape of the flow-around plate side wall, and the distance between the outer side fixing wing and the inner side fixing wing is matched with the thickness of the flow-around plate side wall.

3. The construction device of the assembled bridge pile foundation flow around plate according to claim 1, characterized in that, The bearing disc is provided with at least three exhaust holes penetrating through the top surface and the bottom surface; and the center of the pattern formed by sequentially connecting all the exhaust holes is coincided with the center of the bearing disc.

4. A construction method of a fabricated bridge pile foundation flow around plate, characterized in that, The construction device according to any one of claims 1-3 comprises the following steps: S1: clamp the two side walls of the flow-around plate by the two fixing leg devices respectively, and fix by cooperating with the nut through the bolt passing through the fixing leg device and the side wall; S2: hoist the construction device with the fixed flow-around plate to the position to be buried in the bridge pile foundation; S3: pressurize the construction device to bury the flow-around plate to the predetermined depth.

5. The construction method according to claim 4, characterized in that, In step S1, before clamping the two side walls of the flow-around plate by the fixing leg, the steps of determining the position of the center of gravity of the assembled bridge pile foundation flow-around plate and aligning the center of gravity of the construction device are further included.

6. The construction method according to claim 4, characterized in that, The step S2 is to hoist the construction device, which is to pass the hoisting rope through the exhaust hole on the bearing disc and hoist the construction device through the hoisting rope.

7. The construction method according to claim 4, characterized in that, The step S3 is to pressurize the construction device, which is to align the pile hammer of the pile driving machine construction equipment with the bearing disc to pressurize the construction device.

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