A concrete structure for a pile joint under an operating hub

Abstract

The utility model relates to the field of building engineering and concrete construction, more specifically, relate to a kind of operating hub lower pile column joint concrete structure, including pile cap, pile foundation, newly built column and flow guide pipe, the gap between the newly built column and the pile cap forms joint space, the flow guide pipe is closely arranged in the side of the pile cap and the periphery of the pile foundation, and the outlet end of the flow guide pipe is connected into the joint space;For solving the joint pouring construction in traditional pile foundation and pile cap, the load-bearing performance of pile cap is affected by the damage of pile cap, the construction difficulty is increased to lead to the construction cost promotion, the pouring quality is difficult to control to lead to the poor concrete quality at joint, avoid the damage to the pile cap, control the uniform pouring of slurry, to enhance the slurry filling effect and enhance the structural performance of the gap between newly built column and pile cap;Effectively improve the construction efficiency, simplify the procedure, and significantly improve the strength and durability of joint.

Description

Technical Field

[0001] This utility model relates to the fields of building engineering and concrete construction, and more specifically, to a concrete structure for the pile-column joint of an operational hub. Background Technology

[0002] In modern construction engineering, the connection quality between pile foundations and pile caps directly affects the stability and safety of the entire structure. However, the pouring of the joint between pile foundations and pile caps often presents some technical challenges, especially when secondary pile foundation pouring is carried out on an existing pile cap foundation. Traditional construction techniques often fail to ensure the overall compactness and bonding performance of the joint.

[0003] In traditional pile foundation and cap joint construction, holes are typically drilled in the cap to allow concrete to be injected from above into the gap between the pile and the cap. However, this method has several drawbacks: Damage to the foundation: Drilling holes in the foundation may damage the integrity of the original foundation structure, affect the load-bearing capacity of the foundation, and thus pose a threat to the overall safety of the building.

[0004] Construction difficulty: Drilling holes on existing foundations is a complex and time-consuming operation, which increases the difficulty and cost of construction.

[0005] The quality of the pouring is not easy to control: the traditional top grouting method is prone to voids and uneven filling of concrete grout during the injection process, making it difficult to ensure the compactness and strength of the concrete at the joint.

[0006] How to avoid damage to the foundation, reduce construction difficulty, and control the pouring quality has become an urgent problem to be solved in this field. Utility Model Content

[0007] This utility model aims to overcome at least one of the defects (deficiencies) of the prior art and provides a concrete structure for the pile-column joint under the operation hub. It is used to solve the problems in the traditional pile foundation and cap joint pouring construction, such as the cap being damaged, which affects the load-bearing performance of the cap, the construction difficulty increasing, which leads to higher construction costs, and the difficulty in controlling the pouring quality, which leads to poor concrete quality at the joint.

[0008] The technical solution adopted by this utility model is a concrete structure for a pile-column joint under an operating hub, which includes a pile cap, pile foundations, newly constructed columns, and a diversion pipe. The pile foundations include several piles located below the pile cap. The newly constructed columns are located between adjacent pile foundations. The gap between the newly constructed columns and the pile cap forms a joint space. The diversion pipe is closely attached to the side of the pile cap and around the pile foundations, and the outlet end of the diversion pipe is connected to the joint space. Concrete is poured into the diversion pipe to fill the joint space.

[0009] It is beneficial to provide new support columns for secondary pouring on the foundation of existing pile caps and pile foundations by constructing new columns side by side between adjacent pile foundations, thereby improving the connection stability and safety between pile foundations and pile caps; the concrete grout is injected evenly and precisely into the joint space through the diversion pipe, avoiding damage to the pile cap, and can also control the uniform pouring of grout, thereby enhancing the grout filling effect and improving the structural performance of the gap between the new column and the pile cap.

[0010] Furthermore, the joint space includes an interface treatment agent to increase the adhesion between the poured concrete and the joint space.

[0011] It is beneficial to improve the bonding strength between new and old concrete through interface treatment agents, increase the adhesion between secondary poured concrete and piles, and improve the connection quality of the structure.

[0012] Furthermore, several support points are evenly distributed in the joint space, and each support point is used to place a support device to provide temporary support for the joint space before pouring and filling.

[0013] This allows for the provision of sufficient support for the joint space formed by the gap between the foundation and the newly built column after the joint space has been cleaned and the interface has been treated, before the secondary pouring, thus ensuring the continuous stability of the overall structure.

[0014] Furthermore, the support device includes a jack or screw support to adjust the support height within the joint space.

[0015] It is advantageous to adjust the support height within the joint space using jacks or screw supports to accommodate support requirements of different gaps.

[0016] Furthermore, each support point also includes a fixing layer located below the support device, the fixing layer comprising a pad or a mortar layer.

[0017] This allows for the installation of pads or mortar layers below the support device after a stable support force is formed through a fixed layer. This prevents the support device from shifting or tilting during construction, which could lead to insufficient stability of the temporary support force and affect the secondary pouring effect.

[0018] Furthermore, the guide pipe is a steel pipe or a PVC pipe.

[0019] This is beneficial for ensuring that the diversion pipe does not deform or leak under grouting pressure by using high-strength, corrosion-resistant materials, thus ensuring that the quality of the secondary pouring remains good.

[0020] Furthermore, it also includes a monitoring device for monitoring the structural deformation and displacement caused by the joint space of the diversion pipe during concrete pouring.

[0021] It is beneficial to monitor the changes caused by impact deformation between the pile cap and the pile foundation in real time through the monitoring device during the secondary pouring of the joint space, so as to ensure the quality of the pouring and the stability of the structure after pouring.

[0022] Furthermore, the monitoring device includes a settlement unit, which is a fiber optic sensor, located at the edge of the joint space and / or on the newly built column and / or on the bearing platform, to monitor the settlement changes of the overall structure in real time.

[0023] It is beneficial to monitor in real time the settlement of the foundation and pile foundation, the new column during the grouting and curing process of the secondary pouring, and the settlement deformation of the overall structure after the pouring is completed through the settlement unit.

[0024] Furthermore, the monitoring device includes a displacement unit, which is a linear displacement sensor or a fiber optic displacement sensor, located at the edge of the joint space and / or on the newly built column and / or on the support platform, to monitor the displacement changes of the overall structure in real time.

[0025] It is beneficial to monitor the displacement of the pile cap, pile foundation, and newly built column in real time during the grouting and curing process of secondary pouring through displacement unit, so as to adjust the grouting volume or the fluidity of grouting material to ensure the stability after grouting; and to monitor the relative displacement between the pile cap and pile foundation after secondary pouring in real time through displacement unit.

[0026] Furthermore, the monitoring device includes a signal transmission unit, an alarm unit, and a central control unit. The monitoring device transmits the detected change signals to the central control unit through the signal transmission unit to achieve real-time monitoring; at the same time, the change signals are sent to the alarm unit to trigger an automatic alarm.

[0027] It facilitates remote monitoring and alarming of detected changes in signals through signal transmission units, alarm units, and central control units, enabling remote operation, maintenance, and operation from multiple locations, and improving monitoring efficiency.

[0028] Compared with existing technologies, the beneficial effects of this utility model are as follows: by constructing new columns parallel to adjacent pile foundations, new support columns are provided for secondary pouring on the foundation of existing pile caps and pile foundations, thereby improving the connection stability and safety between the pile foundation and the pile cap; by injecting concrete grout evenly and precisely into the joint space through the guide pipe, damage to the pile cap is avoided, and the uniform pouring of the grout can be controlled to enhance the grout filling effect and the structural performance of the gap between the new column and the pile cap; construction efficiency is effectively improved, procedures are simplified, structural damage problems caused by traditional processes are avoided, and the strength and durability of the joint are significantly improved. Attached Figure Description

[0029] Figure 1This is a schematic diagram of the installation of the guide tube of this utility model.

[0030] Figure 2 This is a schematic diagram of the interface treatment of the joint space of this utility model.

[0031] Figure 3 This is a schematic diagram of the grouting process of this utility model.

[0032] Figure 4 This is a flowchart of the settlement monitoring and displacement control of this utility model. Detailed Implementation

[0033] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0034] Example like Figure 1-4 As shown, this embodiment provides a concrete structure for a pile-column joint under an operating hub, which includes a pile cap, pile foundations, newly constructed columns, and a diversion pipe. The pile foundations include several piles located below the pile cap. The newly constructed columns are located between adjacent pile foundations. The gap between the newly constructed columns and the pile cap forms a joint space. The diversion pipe is closely attached to the side of the pile cap and around the pile foundations, and the outlet end of the diversion pipe is connected to the joint space. Concrete is poured into the diversion pipe to fill the joint space.

[0035] In this embodiment, grouting is achieved by laterally installing a guide pipe in the gap between the pile foundation and the pile cap, eliminating the need for drilling holes in the pile cap and thus ensuring the structural integrity of the pile cap. The gap formed between the newly constructed column and the pile cap is a joint space used to fill the secondary concrete pouring material. The guide pipe is arranged as close as possible to the bottom of the pile cap or around the pile foundation, with the outlet end of the guide pipe pointing towards the joint space to ensure that the grouting material flows smoothly and fills the gap. Before pouring, the joint space is first cleaned and the interface is treated; then, the guide pipe is installed along the outer edge between the pile cap and the pile foundation, close to the contact surface between the pile cap and the pile foundation; then, a temporary support device is installed in the joint space; and pouring begins after ensuring that the precise support height is reached.

[0036] The joint space includes an interface treatment agent to increase the adhesion between the poured concrete and the joint space.

[0037] In this embodiment, an interface treatment agent is used to treat the joint surface 2mm thick during grouting to enhance the bond between the concrete and the joint, ensuring pouring quality. The treatment process includes cleaning the joint interface and applying the interface treatment agent. Cleaning the joint interface involves thoroughly cleaning the pile-column joint interface with a high-pressure water gun or brush before pouring, ensuring it is free of dust, oil, and debris. After cleaning, a damp cloth can be used to wipe the interface, keeping it moist to enhance the concrete's adhesion. Applying the interface treatment agent involves selecting a suitable agent, such as a polymer emulsion or interface enhancer, and applying it evenly to the cleaned joint surface. The purpose of the interface treatment agent is to increase the bond strength between the concrete and the pile-column, improving the interface bonding quality; ensure the interface treatment agent is completely dry before concrete pouring.

[0038] Several support points are evenly distributed in the joint space, and each support point is used to place a support device to provide temporary support for the joint space before pouring and filling.

[0039] In this embodiment, the support points in the joint space need to be located first. Support points are arranged at the contact position between the pile cap and the pile foundation to determine the position of the support device. A pad can be set at the bottom of the support system to ensure the stability of the support points.

[0040] The support device includes jacks or screw supports to adjust the temporary support height within the joint space.

[0041] In this embodiment, after determining the support point locations, jacks, steel pipes, or screw support assemblies are installed one by one at predetermined positions according to design requirements and the type of support device. If jacks are used, it must be ensured that the jack support surface is in close contact with the pile cap and pile foundation surface. After installation, the support height needs to be adjusted so that the gap between the pile cap and pile foundation meets design requirements. For jacks or screw supports, the support height is gradually adjusted until the required precise height is achieved.

[0042] Each support point also includes a fixing layer located below the support device, the fixing layer comprising a pad or a mortar layer.

[0043] In this embodiment, after ensuring the installation position of the support device, a pad or mortar can be added to the bottom of the support device to fix the support and prevent the support device from shifting or tilting during construction.

[0044] The guide pipe is a steel pipe or a PVC pipe.

[0045] In this embodiment, the length and angle of the guide pipe can be adjusted according to the actual gap between the pile foundation and the pile cap to ensure uniform grouting from the side. The guide pipe is made of high-strength, corrosion-resistant steel or PVC pipe to ensure that it does not deform or leak under grouting pressure. When using a side-mounted guide pipe, it can be installed along the outer edge between the pile cap and the pile foundation, close to the contact surface. The guide pipe should be placed as close as possible to the bottom of the pile cap or around the pile foundation, with the outlet end pointing towards a critical location within the joint space to ensure that the grouting material flows smoothly and fills the gap.

[0046] In this embodiment, concrete grout is used to inject grout along the guide pipe, starting from areas with smaller gaps or easier filling, and gradually filling the gaps in the entire joint space. At the same time, attention should be paid to appropriate grouting pressure to ensure uniform material distribution. During the grouting process, the grouting effect is continuously monitored to ensure that no air bubbles or voids are generated, and to observe whether there are any problems such as grout leakage.

[0047] It also includes a monitoring device for monitoring the structural deformation and displacement caused by the joint space of the diversion pipe during concrete pouring.

[0048] In this embodiment, the monitoring device can be used not only to monitor deformation and displacement during grouting, but also for structural curing after grouting. It ensures the concrete is densely filled in the joint space, allowing the grout to naturally form and solidify. During curing, appropriate maintenance is necessary to prevent the grouting material from losing water too quickly, leading to shrinkage and affecting the bonding quality between the pile cap and the pile foundation.

[0049] The monitoring device includes a settlement unit, which is a fiber optic sensor, located at the edge of the joint space and / or on the newly built column and / or on the bearing platform, to monitor the settlement changes of the overall structure in real time.

[0050] In this embodiment, during the grouting and curing process, the settlement of the pile cap and pile foundation needs to be monitored to ensure that there is no abnormal settlement during the material curing process. Fiber optic sensing technology is used for settlement monitoring. The fiber optic cables are deployed at key locations on the pile cap and pile foundation. The fiber optic sensors can monitor the deformation of the structure in real time, including settlement. The sensors can accurately record even minute settlement changes, making them suitable for long-term monitoring.

[0051] The monitoring device includes a displacement unit, which is a linear displacement sensor or a fiber optic displacement sensor, and is located at the edge of the joint space and / or on the newly built column and / or on the support platform to monitor the displacement changes of the overall structure in real time.

[0052] In this embodiment, a displacement monitoring system can be used to record the relative displacement between the pile cap and the pile foundation in real time during the construction process. If necessary, the fluidity of the grouting material or the amount of grouting can be adjusted to ensure the stability after grouting. Automatic displacement sensors are used, and displacement sensors (such as linear displacement sensors, fiber optic displacement sensors, etc.) are installed in key parts of the structure (such as joints, pile caps, pile foundations, etc.) to monitor displacement changes in real time.

[0053] The monitoring device includes a signal transmission unit, an alarm unit, and a central control unit. The monitoring device transmits the detected change signals to the central control unit through the signal transmission unit to achieve real-time monitoring; at the same time, the change signals are sent to the alarm unit to trigger an automatic alarm.

[0054] In this embodiment, the fiber optic sensor or displacement sensor transmits data to the central control unit via electrical or fiber optic signals, automatically records the monitored changes and issues an alarm, thereby achieving remote monitoring, adjustment, and maintenance.

[0055] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A concrete structure for the pile-column joint under an operational hub, characterized in that, The system includes a pile cap, pile foundations, newly constructed columns, and a diversion pipe. The pile foundations consist of several piles located below the pile cap. The newly constructed columns are located between adjacent pile foundations. The gap between the newly constructed columns and the pile cap forms a joint space. The diversion pipe is located close to the side of the pile cap and around the pile foundations, with its outlet end connected to the joint space. Concrete is poured into the diversion pipe to fill the joint space.

2. The concrete structure for the pile-column joint under an operational hub according to claim 1, characterized in that, The joint space includes an interface treatment agent to increase the adhesion between the poured concrete and the joint space.

3. The concrete structure for the pile-column joint under an operational hub according to claim 1, characterized in that, Several support points are evenly distributed in the joint space, and each support point is used to place a support device to provide temporary support for the joint space before pouring and filling.

4. The concrete structure for the pile-column joint under an operational hub according to claim 3, characterized in that, The support device includes jacks or screw supports to adjust the temporary support height within the joint space.

5. The concrete structure for the pile-column joint under an operational hub according to claim 3, characterized in that, Each support point also includes a fixing layer located below the support device, the fixing layer comprising a pad or a mortar layer.

6. The concrete structure for the pile-column joint under an operational hub according to claim 1, characterized in that, The guide pipe is a steel pipe or a PVC pipe.

7. The concrete structure for the pile-column joint under an operational hub according to claim 1, characterized in that, It also includes a monitoring device for monitoring the structural deformation and displacement caused by the joint space of the diversion pipe during concrete pouring.

8. The concrete structure for the pile-column joint under an operational hub according to claim 7, characterized in that, The monitoring device includes a settlement unit, which is a fiber optic sensor, located at the edge of the joint space and / or on the newly built column and / or on the bearing platform, to monitor the settlement changes of the overall structure in real time.

9. The concrete structure for the pile-column joint under an operational hub according to claim 7, characterized in that, The monitoring device includes a displacement unit, which is a linear displacement sensor or a fiber optic displacement sensor, and is located at the edge of the joint space and / or on the newly built column and / or on the support platform to monitor the displacement changes of the overall structure in real time.

10. A concrete structure for a pile-column joint under an operational hub according to claim 7, characterized in that, The monitoring device includes a signal transmission unit, an alarm unit, and a central control unit. The monitoring device transmits the detected change signals to the central control unit through the signal transmission unit to achieve real-time monitoring; at the same time, the change signals are sent to the alarm unit to trigger an automatic alarm.

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