Installation method of rank pile displacement coordinator

Abstract

This invention relates to the technical field of rank pile displacement coordinators, and discloses an installation method for a rank pile displacement coordinator, which is arranged between the top of the pile cap and the top of the reinforcing pile, including the following steps: 1) The reinforcing pile is set in the foundation, and the top of the reinforcing pile is leveled to form a horizontally arranged support surface; 2) A stress adjustment pad is placed on the support surface to eliminate stress concentration between the top of the pile cap and the reinforcing pile; 3) A displacement adjustment pad is set on the stress adjustment pad to adjust the settlement of the pile cap when the rank pile displacement coordinator is under stress, and the stress adjustment pad and the displacement adjustment pad form the rank pile displacement coordinator; by setting the rank pile displacement coordinator, the stiffness of the foundation is changed, the total settlement and differential deformation value of the foundation are controlled, the bearing capacity of the foundation is fully utilized, and the reinforcing pile is allowed to play its role in reducing settlement, effectively controlling the foundation deformation within the allowable deformation range and meeting the design deformation requirements.

Description

Technical Field

[0001] This invention patent relates to the technical field of rank stake displacement coordinators, and more specifically, to a method for installing rank stake displacement coordinators. Background Technology

[0002] Under normal use conditions, the requirement for foundation deformation is to control the foundation deformation value within the range allowed by the structural design. my country's latest mandatory standard, "General Code for Building and Municipal Foundations" (GB55003-2021), stipulates that the foundation deformation value should meet the functional and normal use requirements of the superstructure.

[0003] The purpose of foundation design is to meet the normal use requirements of the superstructure. However, in current foundation design in my country, the deformation calculation results of the foundation have large errors, making it difficult to meet the requirements of engineering applications. Therefore, the bearing capacity-controlled design method has been adopted. When the bearing capacity of the natural foundation cannot meet the load requirements of the superstructure, reinforced piles are used to strengthen the foundation, forming reinforced piles or pile foundations.

[0004] The characteristic value of the foundation bearing capacity of the reinforced pile body shall be calculated according to the following provisions:

[0005]

[0006] Among them, f spa To enhance the characteristic value of the foundation bearing capacity of the piles;

[0007] λ s To enhance the bearing capacity utilization factor of the foundation between piles, the pile λ is increased. s =0.7~1.0; pile foundation λ s =0;

[0008] λ p To enhance the utilization factor of the vertical bearing capacity of the pile, a value of 0.8 to 1.0 is adopted;

[0009] f a The corrected characteristic value of foundation bearing capacity (kPa) has a safety factor of 2.

[0010] R a To enhance the characteristic value of the pile's bearing capacity (kN), a safety factor of 2 is adopted;

[0011] A p To increase the cross-sectional area of ​​the pile.

[0012] The deformation calculation of reinforced piles or pile foundations is more complex than that of natural foundations, but if the formula is satisfied, the design can be considered to meet the deformation requirements.

[0013] Reference Figure 1-2The images show the connection methods between pile foundations or reinforced piles and pile caps. The pile caps are directly connected to the reinforced piles or pile foundations, which has the following drawbacks:

[0014] 1) For pile foundations or reinforced piles, not only is the construction complex, but also because the deformation of the pile foundations or reinforced piles is small, they cannot exert the resistance of the foundation soil, which is unfavorable for seismic design;

[0015] 2) For reinforced piles, the strength of the reinforced piles cannot be fully utilized. Summary of the Invention

[0016] The purpose of this invention is to provide an installation method for a rank pile displacement coordinator, which aims to solve the problem of direct connection between the pile body and the pile cap in the prior art.

[0017] This invention is implemented as follows: the installation method of the rank pile displacement coordinator, arranged between the top of the pile cap and the top of the reinforcing pile, includes the following steps:

[0018] 1) The reinforcing piles are installed in the foundation, and the top of the reinforcing piles is leveled to form a horizontally arranged support surface;

[0019] 2) Place a stress-adjusting pad on the support surface to eliminate stress concentration between the top of the pile cap and the reinforced pile.

[0020] 3) A displacement adjustment pad is set on the stress adjustment pad. The displacement adjustment pad adjusts the settlement of the pile cap when the rank pile displacement coordinator is under force. The pile cap abuts against the displacement adjustment pad from top to bottom. The stress adjustment pad and the displacement adjustment pad form the rank pile displacement coordinator.

[0021] Furthermore, the stress-adjusting pad is made of an elastic material.

[0022] Furthermore, the strength of the stress-adjusting pad is the same as the strength of the pile cap or the strength of the reinforcing pile.

[0023] Furthermore, the stress-adjusting pad has the same shape as the supporting surface, and the thickness of the stress-adjusting pad is greater than 5 cm.

[0024] Furthermore, the displacement adjusting pad is made of a low-strength, brittle material.

[0025] Furthermore, the displacement adjusting pad is made of polystyrene or plastic.

[0026] Furthermore, in step 3), a cushion layer is provided on the outer periphery of the rank pile displacement coordinator, and concrete is poured on the cushion layer to form the pile cap.

[0027] Furthermore, the bottom of the pier is recessed upwards to form a recessed position, and the rank pile displacement coordinator is embedded in the recessed position.

[0028] Furthermore, the displacement adjustment pad includes a panel, and the outer periphery of the panel is provided with a downwardly extending outer support ring, the support ring is arranged around the outer periphery of the panel, and the outer support ring surrounds and encloses to form an enclosed area.

[0029] The enclosed area is provided with multiple inner support strips, the top of which is connected to the bottom of the panel, and the bottom of which extends downward and is flush with the bottom of the outer support ring; the enclosed area is provided with multiple stiffening ribs, the top of which is connected to the bottom of the panel, the two ends of which are respectively connected to the outer support ring, and the bottom of which is located above the bottom of the outer support ring.

[0030] In step 3), after the displacement adjustment pad is placed on the stress adjustment pad, the bottom of the outer support ring and the bottom of the inner support strip are supported on the stress adjustment pad, and the panel is arranged facing upward and abuts against the support platform.

[0031] Furthermore, the lower part of the stress adjustment pad forms an adjustment section, and the bottom of the adjustment section abuts against the support surface of the reinforcing pile; the adjustment section has a plurality of longitudinally arranged and closed slots, and a plurality of balls are provided in the slots. The balls are placed in the slots, and the diameter of the balls is greater than the width of the slots and relative to the length of the slots.

[0032] The ball is located in the middle of the groove, which has a lower section below the ball and an upper section above the ball; the width of the upper section is greater than the width of the lower section, and the width of the lower section gradually decreases from top to bottom.

[0033] When the stress adjustment pad is pressed, the length of the groove is compressed, the width of the groove increases, the ball moves laterally under pressure, and the bottom of the adjustment part is pressed to fit against the support surface.

[0034] Compared with existing technologies, the installation method of the rank pile displacement coordinator provided by this invention reserves deformation space between the top of the reinforcing pile and the pile cap, and sets up the rank pile displacement coordinator to allow the foundation to deform fully and exert greater resistance. After the foundation reaches the critical load, the rank pile displacement coordinator begins to bear the load, changing the stiffness of the foundation, thereby controlling the total settlement and differential deformation value of the foundation. This fully utilizes the bearing capacity of the foundation and allows the reinforcing pile to play its role in reducing settlement, effectively controlling the foundation deformation within the allowable deformation range and meeting the design deformation requirements. Furthermore, due to the action of the rank pile, the foundation deformation is quickly stabilized. This method is not only simple to construct, but also reduces costs and construction period. Attached Figure Description

[0035] Figure 1 This is a front view diagram of the connection between the pile foundation and the pile cap provided in the prior art;

[0036] Figure 2 This is a front view schematic diagram of the connection between the reinforced pile and the pile cap provided in the prior art;

[0037] Figure 3 This is a front view schematic diagram of the connection between the pile cap, the pile displacement coordinator, and the reinforced pile body provided by the present invention.

[0038] Figure 4 This is a front view schematic diagram of the displacement adjustment pad provided by the present invention;

[0039] Figure 5 This is a side view of the displacement adjustment pad provided by the present invention;

[0040] Figure 6 This is a schematic diagram of the internal structure of the stress-adjusting pad provided by the present invention. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0042] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0043] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0044] Reference Figure 3-6 The image shown is a preferred embodiment of the present invention.

[0045] The installation method of the rank pile displacement coordinator, which is arranged between the top of the pile cap 100 and the reinforcing pile body 200, includes the following steps:

[0046] 1) The reinforcing pile 200 is installed in the foundation, and the top of the reinforcing pile 200 is leveled to form a horizontally arranged support surface;

[0047] 2) Place a stress-adjusting pad 302 on the support surface. The stress-adjusting pad 302 eliminates the stress concentration phenomenon between the top of the bearing platform 100 and the top of the reinforced pile 200.

[0048] 3) A displacement adjustment pad 301 is set on the stress adjustment pad 302. The displacement adjustment pad 301 adjusts the settlement of the pile cap 100 when the rank pile displacement coordinator is under stress. The pile cap 100 abuts against the displacement adjustment pad 301 from top to bottom. The stress adjustment pad 302 and the displacement adjustment pad 301 form the rank pile displacement coordinator.

[0049] The above-mentioned method for installing the rank pile displacement coordinator involves reserving deformation space between the top of the reinforcing pile 200 and the pile cap 100, and then installing the rank pile displacement coordinator to allow the foundation to deform fully and exert greater resistance. After the foundation reaches the critical load, the rank pile displacement coordinator begins to bear the load, changing the stiffness of the foundation, thereby controlling the total settlement and differential deformation value of the foundation. This fully utilizes the bearing capacity of the foundation and allows the reinforcing pile 200 to play its role in reducing settlement, effectively controlling the foundation deformation within the allowable deformation range and meeting the design deformation requirements. Furthermore, due to the action of the rank pile, the foundation deformation is quickly stabilized. This method is not only simple to construct but also reduces costs and construction time.

[0050] The setup of the rank-stub shift coordinator has the following advantages:

[0051] 1) Reduce the cost and construction period of reinforced piles by more than 30%;

[0052] 2) Reduce the depth of the foundation pit excavation;

[0053] 3) A simpler connection method between the pile cap 100 and the reinforcing pile 200;

[0054] 4) Can be manufactured in a factory, ensuring stable quality;

[0055] 5) Foundation deformation is controllable;

[0056] 6) Effectively improves the earthquake resistance of the foundation.

[0057] During construction, the use of a rank pile displacement coordinator makes construction more convenient and simple, eliminating the need for phased pile sealing based on actual settlement measurement results and avoiding the problem of cumbersome construction.

[0058] In this embodiment, the stress-adjusting pad 302 is made of elastic material. The strength of the stress-adjusting pad 302 is the same as the strength of the pile cap 100 or the strength of the reinforcing pile 200. The shape of the stress-adjusting pad 302 is consistent with the shape of the supporting surface, and the thickness of the stress-adjusting pad 302 is greater than 5 cm.

[0059] Since both the pile cap 100 and the reinforcing pile 200 are made of concrete, when the load of the pile cap 100 is transferred to the supporting surface of the reinforcing pile 200, due to the limitations of construction conditions, the supporting surface of the reinforcing pile 200 will inevitably have local unevenness, which will inevitably cause stress concentration. In order to avoid stress concentration causing local breakage of the reinforcing pile 200, stress adjustment pads are used for adjustment to avoid stress concentration between the supporting surfaces of the pile cap 100 and the reinforcing pile 200.

[0060] In this embodiment, the displacement adjusting pad 301 is made of a low-strength, brittle material. The displacement adjusting pad 301 is made of polystyrene or plastic. When the displacement adjusting pad 301 is damaged by force, the deformation effect on the bottom of the support 100 is negligible.

[0061] A cushion layer 101 is provided around the outer periphery of the rank pile displacement coordinator, and concrete is poured on the cushion layer 101 to form a pile cap 100. The bottom of the pile cap 100 is concave upward, forming a recessed position, in which the rank pile displacement coordinator is embedded.

[0062] The displacement adjustment pad 301 includes a panel 303. The outer periphery of the panel 303 is provided with an outer support ring 304 that extends downward. The support ring is arranged around the outer periphery of the panel 303, and the outer support ring 304 surrounds and encloses to form an enclosed area. The enclosed area is provided with a plurality of inner support strips 306. The top of the inner support strips 306 is connected to the bottom of the panel 303, and the bottom of the inner support strips 306 extends downward and is flush with the bottom of the outer support ring 304.

[0063] Multiple stiffening ribs 305 are provided in the enclosed area. The top of the stiffening ribs 305 is connected to the bottom of the panel 303. The two ends of the stiffening ribs 305 are respectively connected to the outer support ring 304. The bottom of the stiffening ribs 305 is located above the bottom of the outer support ring 304. In step 3), after the displacement adjustment pad 301 is placed on the stress adjustment pad 302, the bottom of the outer support ring 304 and the bottom of the inner support strip 306 are supported on the stress adjustment pad 302. The panel 303 is arranged facing upward and abuts against the support platform 100.

[0064] In this embodiment, the lower part of the stress adjustment pad 302 forms an adjustment part, and the bottom of the adjustment part abuts against the support surface of the reinforcing pile 200. The adjustment part has a plurality of longitudinally arranged and closed holes and slots, and a plurality of balls 400 are provided in the holes and slots. The balls 400 are placed in the holes and slots, and the diameter of the balls 400 is greater than the width of the holes and slots and relative to the length of the holes and slots.

[0065] The ball 400 is located in the middle of the groove. The groove has a lower section 402 below the ball 400 and an upper section 401 above the ball 400. The width of the upper section 401 is greater than the width of the lower section 402, and the width of the lower section 402 gradually decreases from top to bottom. When the stress adjusting pad 302 is pressed, the length of the groove is compressed, the width of the groove increases, the ball 400 moves laterally under pressure, and the bottom of the pressing adjustment part abuts against the support surface.

[0066] When the rank pile displacement coordinator is under pressure, the stress adjustment pad 302 will be compressed and deformed. In this process, in order to avoid stress concentration on the support surface, the stress adjustment pad 302 needs to be in direct contact with the support surface. By setting the slots and the ball bearings 400, when the stress adjustment pad 302 deforms, the slots deform accordingly, driving the ball bearings 400 to press laterally in the slots, driving the bottom of the stress adjustment pad 302 to directly contact the support surface.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for installing a rank-stake displacement coordinator, characterized in that, Arranged between the top of the pile cap and the top of the reinforcing pile, including the following steps: 1) The reinforcing piles are installed in the foundation, and the top of the reinforcing piles is leveled to form a horizontally arranged support surface; 2) Place a stress-adjusting pad on the support surface to eliminate stress concentration between the top of the pile cap and the reinforced pile. 3) A displacement adjustment pad is set on the stress adjustment pad. The displacement adjustment pad adjusts the settlement of the pile cap when the rank pile displacement coordinator is under force. The pile cap abuts against the displacement adjustment pad from top to bottom. The stress adjustment pad and the displacement adjustment pad form the rank pile displacement coordinator. The lower part of the stress adjustment pad forms an adjustment section, and the bottom of the adjustment section abuts against the support surface of the reinforcing pile. The adjustment section has a plurality of longitudinally arranged and closed slots, and a plurality of balls are provided in the slots. The balls are placed in the slots, and the diameter of the balls is greater than the width of the slots and less than the length of the slots. The ball is located in the middle of the groove, which has a lower section below the ball and an upper section above the ball; the width of the upper section is greater than the width of the lower section, and the width of the lower section gradually decreases from top to bottom. When the stress adjustment pad is pressed, the length of the groove is compressed, the width of the groove increases, the ball moves laterally under pressure, and the bottom of the adjustment part is pressed to fit against the support surface.

2. The method of installing a rank position coordinator as claimed in claim 1, wherein, The stress-adjusting pad is made of an elastic material.

3. The method of installing a rank position coordinator of claim 1, wherein, The strength of the stress-adjusting pad is the same as the strength of the pile cap or the strength of the reinforcing pile.

4. The method of installing a rank position coordinator of claim 1, wherein, The stress-adjusting pad has the same shape as the supporting surface, and the thickness of the stress-adjusting pad is greater than 5 cm.

5. The method of installing a rank position coordinator of claim 1, wherein, The displacement adjustment pad is made of a low-strength, brittle material.

6. The method of installing a rank position coordinator of claim 5, wherein, The displacement adjustment pad is made of polystyrene.

7. The method of installing a rank position coordinator of claim 1, wherein, In step 3), a cushion layer is set on the outer periphery of the rank pile displacement coordinator, and concrete is poured on the cushion layer to form the pile cap.

8. The method of installing a rank position coordinator of claim 1, wherein, The bottom of the pier is recessed upwards, forming a recessed position, and the rank pile displacement coordinator is embedded in the recessed position.

9. The method of installing a rank position coordinator according to any one of claims 1 to 8, wherein, The displacement adjustment pad includes a panel, and the outer periphery of the panel is provided with a downwardly extending outer support ring. The outer support ring is arranged around the outer periphery of the panel, and the outer support ring surrounds and encloses to form an enclosed area. The enclosed area is provided with multiple inner support strips, the top of which is connected to the bottom of the panel, and the bottom of which extends downward and is flush with the bottom of the outer support ring; the enclosed area is provided with multiple stiffening ribs, the top of which is connected to the bottom of the panel, the two ends of which are respectively connected to the outer support ring, and the bottom of which is located above the bottom of the outer support ring. In step 3), after the displacement adjustment pad is placed on the stress adjustment pad, the bottom of the outer support ring and the bottom of the inner support strip are supported on the stress adjustment pad, and the panel is arranged facing upward and abuts against the support platform.

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