CN215518768U - Accurate location connection structure of steel stand and lower part pile body - Google Patents
Accurate location connection structure of steel stand and lower part pile body Download PDFInfo
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- CN215518768U CN215518768U CN202122119696.8U CN202122119696U CN215518768U CN 215518768 U CN215518768 U CN 215518768U CN 202122119696 U CN202122119696 U CN 202122119696U CN 215518768 U CN215518768 U CN 215518768U
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- 238000010276 construction Methods 0.000 description 23
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Abstract
The utility model discloses a structure for accurately positioning and connecting a steel upright post and a lower pile body, which comprises the steel upright post, a drilling pile, a supporting platform connected to the ground, a control frame connected to the supporting platform, a first jack connected between the control frame and the steel upright post in the horizontal direction, a second jack connected between a protective cylinder and the steel upright post in the horizontal direction, a verticality adjusting control instrument connected with the first jack and the second jack and positioned on the ground, an inclinometer connected to the outer side of the steel upright post and an inclinometer connected with an inclinometer and positioned on the ground. According to the utility model, through the arrangement of the control frame, the steel upright can be effectively borne to provide an installation space; the supporting platform is arranged and can be fixedly connected through a bearing arm which is connected with the steel upright column in advance; the first jack and the second jack are arranged, so that accurate adjustment and clamping fixation can be performed; the steel upright post can be further adjusted by adjusting the pull rod and the crane.
Description
Technical Field
The utility model belongs to the technical field of pile foundation construction, and particularly relates to a steel upright post and lower pile body precise positioning connection structure.
Background
With the development and improvement of the styles of construction engineering, the bearing requirements of buildings or structures on lower foundations are higher and higher, and pile foundations, which are widely used as foundation forms, can bear most of the load of upper buildings and structures. In the existing construction, in the pile foundation, each frame column is supported by a large-diameter cast-in-place pile, which is called a construction form of one column and one pile. The verticality control of the vertical column pile in one column and one pile is always a difficult point and a key point of technical attack. Particularly, when the verticality requirement is high, the existing adjusting equipment is difficult to meet the precision requirement; and at present, the upright post is installed after the pile is formed, the upright post is adjusted to be vertical and fixed, the waiting time for the pile hole after the hole is formed is too long, and the thickness of the pile low sediment is difficult to ensure by secondary hole cleaning of the pile hole.
SUMMERY OF THE UTILITY MODEL
The utility model provides a structure for accurately positioning and connecting a steel stand column and a lower pile body, which is used for solving the technical problems of fixing, carrying, accurate adjustment and the like of a column body on a drilled pile.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a steel upright post and lower pile body accurate positioning connection structure comprises a steel upright post, a drilling pile connected below the steel upright post, a supporting platform connected on the ground, a bearing arm connected on the supporting platform and detachably connected with the steel upright post, a control frame connected on the supporting platform, a first jack connected between the control frame and the steel upright post in the horizontal direction, a bracket connected on the steel upright post, a protective cylinder connected below the ground of the steel upright post and positioned at the periphery of the steel upright post, a second jack connected between the protective cylinder and the level of the steel upright post, a verticality adjusting controller connected with the first jack and the second jack and positioned on the ground, an inclinometer connected outside the steel upright post and an inclinometer connected with the inclinometer and positioned on the ground; and the first jack and the second jack are connected with the verticality adjusting controller in parallel.
Further, the control frame contains the accuse frame pole setting that is square and arranges and connects in the accuse frame horizontal pole at accuse frame pole setting top, accuse frame pole height adaptation steel column erection elevation.
Furthermore, the cross rod of the control frame is horizontally shaped like a Chinese character 'hui' and a reinforcing rod is connected between the two square characters.
Furthermore, the size of the internal square in the cross rod of the control frame corresponds to that of the steel stand column, connecting holes are formed in the reinforcing rod between two square in the cross rod of the control frame at intervals, and the connecting holes are detachably connected with the steel stand column through adjusting pull rods.
Furthermore, first jack can be dismantled and connect on controlling the frame pole setting and interval symmetry sets up on the steel stand ring-shaped, and first jack horizontal arrangement and first jack overhanging portion top meet the steel stand outer wall.
Furthermore, the first jack overhanging part is connected with an arc cushion pad which is connected with the outer wall of the corresponding steel upright post.
Furthermore, the second jack stiff end is connected with the pile casing and is spaced the symmetry setting on the steel stand annular, and overhanging end top meets steel stand outer wall, and the overhanging portion of second jack is connected with the arc blotter and corresponds steel stand outer wall connection.
Furthermore, the gradient of the top of the supporting platform is not more than 1%, and a positioning cross line is engraved on the supporting platform corresponding to the center of the steel upright post.
Further, the diameter of the casing is not less than 20cm larger than that of the drilled pile; the top of the pile casing is fixedly connected with the supporting platform; the lower part can dismantle in protecting a section of thick bamboo and be connected with 4 at least second jacks, and the second jack sets up and corresponds and install displacement sensor in protecting a section of thick bamboo hoop interval.
The utility model has the beneficial effects that:
1) according to the utility model, through the arrangement of the control frame, on one hand, the steel upright column can be effectively borne, and on the other hand, an installation space is provided for the first jack, so that the adjustment of the steel upright column is facilitated; and the bearing arms which are connected in advance on the steel upright posts can be fixedly connected by combining the arrangement of the bearing platform;
2) according to the utility model, through the arrangement of the first jack and the second jack, the first jack is connected to the control frame to be beneficial to stress, and the other end of the first jack is directly laterally adjusted to the steel upright column, so that accurate adjustment and clamping fixation can be carried out;
3) the second jack is connected to the protective cylinder, so that the installation is facilitated, and the adjustment, clamping and fixing are facilitated; the first jack and the second jack are jointly controlled by the verticality adjusting controller, so that cooperation and synchronous control are facilitated; the steel upright post can be further adjusted by adjusting the pull rod and the crane;
according to the utility model, through the process control and adjustment of the positioning structure, the positioning, fixing and hoisting of the steel upright column at the upper part of the bored pile and the subsequent concrete pouring are facilitated, the construction quality can be greatly ensured, and the construction period can be greatly saved; additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model; the primary objects and other advantages of the utility model may be realized and attained by the instrumentalities particularly pointed out in the specification.
Drawings
FIG. 1 is a schematic vertical sectional view of a precise positioning and connecting structure of a steel upright post and a lower pile body;
FIG. 2 is a schematic cross-sectional view of a localized casting system with an adjustment tie;
FIG. 3 is a first schematic cross-sectional view of the connection of the control frame and the steel upright;
fig. 4 is a schematic diagram of the transverse section of the connection of the control frame and the steel upright.
Reference numerals: 1-steel upright column, 2-bracket, 3-control frame, 31-control frame upright rod, 32-control frame cross rod, 4-first jack, 5-protective cylinder, 6-second jack, 7-inclinometer pipe, 8-supporting platform, 9-bearing arm, 10-inclinometer, 11-verticality adjusting controller and 12-adjusting pull rod.
Detailed Description
Taking a certain commercial building as an example, the building comprises three underground layers, namely a first-layer parking garage, a facility room and two-layer commerce, and seven overground layers comprise a commerce and commercial management room and a storeroom. The overall construction process of the project adopts a full reverse construction method for construction, and underground continuous walls (two walls are integrated) are adopted at the periphery of a foundation pit as vertical enclosure structures. The topdown construction area utilizes structural beam panels as horizontal support members.
The engineering foundation design grade is grade A, the engineering piles are drilled concrete cast-in-place piles, the pile diameters are 1200mm and 1500mm, the total number is 131, the pile end bearing layer is (5) -2 stroke chemical andesite, and the length of the pile is about 23 m. The elevation of the foundation bottom plate is-15.7 m, the thickness of the bottom plate is 700mm, and the thickness of the local bottom plate is 900 mm. The engineering adopts a reinforced concrete frame structure, and the beam slab concrete grade of the basement structure is C35. The main floor is of a structure with a beam-slab concrete grade of C35, two or more layers of beam-slab concrete grades of C30, the frame column is a steel pipe concrete column, and the steel pipe column concrete is C60. The engineering adopts the full reverse construction method for construction, steel pipe columns (namely 'one column and one pile') are adopted between the pile top of the engineering pile and the negative layer of top plate, the steel pipe columns are inserted 2 meters below the pile top, and the diameters of the steel pipes are phi 600, phi 700, phi 800 and phi 1000. The concrete strength grade of the pile body of the cast-in-situ bored pile is C40, and the concrete strength grade of the upper parts of the steel pipe column and the pile body is C60.
As shown in fig. 1 to 4, a structure for accurately positioning and connecting a steel upright and a lower pile body comprises a steel upright 1, a bored pile connected below the steel upright 1, a supporting platform 8 connected to the ground, a bearing arm 9 connected to the supporting platform 8 and detachably connected to the steel upright 1, a control frame 3 connected to the supporting platform 8, a first jack 4 connected between the control frame 3 and the steel upright 1 in the horizontal direction, a bracket 2 connected to the steel upright 1, a casing 5 connected below the ground of the steel upright 1 and located at the periphery of the steel upright 1, a second jack 6 connected between the casing 5 and the level of the steel upright 1, a verticality adjusting controller 11 connected to the first jack 4 and the second jack 6 and located on the ground, an inclinometer tube 7 connected to the outer side of the steel upright 1, and an inclinometer 10 connected to the inclinometer tube 7 and located on the ground; the first jack 4 and the second jack 6 are connected with the verticality adjusting controller 11 in parallel.
In this embodiment, the control frame 3 is formed by welding or bolting a steel member. The control frame 3 comprises a control frame upright rod 31 arranged in a square shape and a control frame cross rod 32 connected to the top of the control frame upright rod 31, and the control frame upright rod 31 is highly adaptive to the installation elevation of the steel upright 1. The horizontal direction of the control frame cross rod 32 is in a shape of a Chinese character 'hui' and a reinforcing rod is connected between the two square characters. The size of the square inside the control frame cross rod 32 corresponds to that of the steel upright post 1, connecting holes are arranged on the reinforcing rod between the two square shapes of the control frame cross rod 32 at intervals, and the connecting holes are detachably connected with the steel upright post 1 through adjusting pull rods 12.
In this embodiment, first jack 4 bolted connection is in accuse frame pole setting 31 and on steel upright 1 annular interval symmetry set up, first jack 4 horizontal arrangement and the top of first jack 4 extension portion meets steel upright 1 outer wall. The extension part of the first jack 4 is connected with an arc cushion pad corresponding to the outer wall connection of the steel upright post 1.
In this embodiment, 6 stiff ends of second jack and protect a section of thick bamboo 5 to be connected and interval symmetry sets up on 1 annular of steel stand, and overhanging end top meets 1 outer wall of steel stand, and 6 extroversion portions of second jack are connected with the arc blotter and correspond 1 outer wall connection of steel stand.
In this embodiment, the slope of the top of the supporting platform 8 is not more than 1%, and the supporting platform 8 is provided with a positioning cross line corresponding to the center of the steel upright 1.
In the embodiment, the diameter of the casing 5 is not less than 20cm larger than that of the drilled pile; the top of the pile casing 5 is fixedly connected with a supporting platform 8; the lower part in the pile casing 5 can be dismantled and be connected with 4 at least second jacks 6, and 6 jacks of second jack set up and correspond and install displacement sensor in pile casing 5 hoop interval.
With reference to fig. 1 to 4, a construction method of a precise positioning connection structure of a steel column and a lower pile body is further described, which specifically includes the following steps:
the method comprises the following steps that firstly, before construction, a construction site is cleaned and leveled, a supporting platform 8 is designed, the gradient is not more than 1%, after the site is hardened, the steel stand column 1 is measured and positioned firstly before being installed, the plane position of the steel stand column 1 is determined, then a cross line is popped out on the site, after hole forming is carried out, slurry is cleaned, the cross line is rechecked, and the steel stand column 1 is ensured to be positioned accurately.
Because the basement of the project is constructed by adopting a reverse construction method, the elevation of the construction site of the steel upright post 1 pile is about +/-0.000, and the requirement on the flatness of the construction site is higher in order to ensure the verticality of the upright post pile, the construction site is cleaned, leveled and compacted before construction, wherein a supporting platform 8 is hardened by C20 concrete with the thickness of 200mm, and a hole with the diameter of 1.3 m is reserved in the middle; the water dispersion gradient is not more than 1% to prevent the inclination after loading.
Step two, customizing a steel pile casing 5 with the length of 4 meters according to the hole forming precision requirement and the verticality adjusting requirement, wherein the diameter of the pile casing 5 is not less than 20cm larger than that of the drilled pile, and the wall thickness is about 12 mm; processing and manufacturing the control frame 3, measuring the position of the control frame 3 again after the reinforcing cage is placed after the drilled pile is drilled and the center error is controlled within 5 mm; according to the positioning and mounting of the control frame 3, the steel upright post 1 positioning center line is measured and placed on a supporting platform 8 at the lower part of the control frame 3, and identification is carried out at the corresponding position to ensure that the positioning must be correct.
The upper part of the control frame 3 is in supporting connection with the bracket 2 of the steel upright post 1, and the lower part is detachably connected with at least 4 first jacks 4 which are used for centering and adjusting the axis of the steel upright post 1 and fixing the steel upright post 1 and are used as fulcrums in the verticality adjusting process; in addition, at least 4 second jacks 6 are arranged in the pile casing 5 and used for adjusting the verticality of the steel upright post 1 and serving as force action points in the verticality adjusting process; after the control frame 3 takes place, the elevation of the steel upright post 1 is determined according to measured data, the bracket 2 is welded on the position of the steel upright post 1 corresponding to the elevation, the steel upright post 1 is erected on the upper portion of the control frame 3 through the bracket 2 for adjusting the elevation, and in addition, a short steel bar is further arranged on the lower portion of the platform so as to adjust the inclination angle of the steel upright post 1.
For the reinforcement cage in the second step, the reinforcement cage comprises three parts: the steel reinforcement cage of the lower drilling pile, the steel reinforcement cage in the steel upright post 1 pipe and the steel reinforcement cage of which the diameter is the same as that of the steel reinforcement cage of the lower drilling pile on the outer side of the steel upright post 1 pipe; and the protective layer on the outer side of the steel reinforcement cage is connected with a circular roller type concrete cushion block.
The pile reinforcement cage with the drilled lower part is processed according to different design requirements and pile diameters in a reinforcement processing field in a classified mode, the whole cage can be manufactured near a pile hole and is hoisted to a wellhead at one time according to hole forming depth allocation and combined with site conditions, and n-shaped rings are welded at symmetrical positions of the top of the cage to be connected with the steel upright posts 1;
in the embodiment, a steel reinforcement cage in a steel upright 1 pipe is blanked according to the design, the steel reinforcement cage in the pipe can be welded with the steel pipe, the double-side welding is 5D, the single-side welding is 10D, the double-side welding is preferably adopted for uniform stress, an anchor bar outside the pipe is made into a cage shape according to the design and extends into a tool post, and a stiffening rib at the top of the pipe, which does not influence the up-and-down movement of a feeding pipe, can be properly amplified and is tightly attached to the inner diameter of the tool post; the reinforcement cage at the outer part of the steel upright 1 pipe is separately manufactured according to the design requirement, and the stiffening hoops are arranged at the outer side of the main reinforcement and are connected with the reinforcement cage at the lower part of the orifice.
In the embodiment, according to the characteristics that the steel upright 1 is long and the length of the steel upright anchored in the steel reinforcement cage is long, the construction method that the steel upright 1 is placed into the steel reinforcement cage firstly, the top of the steel reinforcement cage is basically flush with the top of a pile hole, then the steel upright 1 is hoisted in place, a section is inserted into the center of the pile hole according to the design requirement, the steel upright 1 is inserted into the steel reinforcement cage for 2000mm, and then the steel reinforcement cage in the hole is lifted and sleeved outside the steel upright 1 vertical to the hole for the second time by using the auxiliary hook on the crane arm is adopted.
Thirdly, arranging an inclinometer pipe 7 on the side surface of the steel upright post 1, and fixing a central marking line of the steel upright post 1 of the inclinometer pipe 7 on the outer side of the steel upright post 1 during arrangement; the inclination measuring pipe 7 is arranged on the outer wall of the steel upright post 1, the upper circle center and the lower circle center of the inclination measuring pipe 7 are kept on the same plane with the center of the steel upright post 1 during installation, the distance between the two circle centers at the upper part is kept equal to the distance between the two circle centers at the lower part, and slight bending in the middle of the inclination measuring pipe has no influence on a measuring result; after the installation is finished, the center deviation (Xs3, Ys3) between the straight pipe and the steel upright post 1 is checked and measured, and the center deviation is qualified when both X s3 and Ys3 are less than or equal to 3 mm.
In the embodiment, after the steel column 1 is processed and transported to a construction site, the inclinometer pipe 7 begins to be installed, wherein the inclinometer pipe 7 is arranged on the side surface of the steel column, is 10 meters long and begins to be arranged 1 meter away from the top of the steel column; the inclinometer 7 is fixed by a special hoop, the hoops are arranged at intervals of 1 meter, and the inclinometer 7 is installed to be parallel to the surface of the steel pipe column and to the axis of the steel pipe column. In order to ensure that the verticality of the steel tube can represent the placement verticality of the steel tube when the inclinometer tube 7 is tested, the inclinometer tube 7 is completely parallel to the steel tube, so that the bus of the steel tube is very important to find, the position of the bus is popped out by using ink lines on the outer side of a steel column when the steel tube leaves a factory, and the inclinometer tube 7 is strictly installed according to the direction of the ink lines when being installed.
During field construction, the height of a control frame upright rod 31 in the control frame 3 is adjusted to be leveled to the horizontal level and is fixedly connected with the supporting platform 8; the supporting platform 8 and the straightening frame should be centered, and the center line of the protective cylinder 5, the center of the supporting platform 8, the center of the control frame 3 and the center of the pile position are ensured.
During vertical control adjustment, the vertical control system adopts the inclinometer 7 to measure the perpendicularity of the steel upright post 1, and applies lateral thrust to the steel upright post 1 through the first jack 4 on the control frame 3, so that the inclination angle of the steel upright post 1 is changed, and the perpendicularity of the steel upright post 1 meets the requirement.
After the steel upright post 1 is centered, a verticality monitoring probe is placed in an inclinometer tube 7, the probe slides into the tube along a cross slot in a PVC tube through a cable, data are collected in two axial directions every 0.5 meter, 80 data are collected in total, and a verticality initial curve is drawn; and then, putting the verticality monitoring probe into the inclinometer 7 again, monitoring in real time, judging the offset of the steel upright 1 according to the initial curve until the verticality meets the requirement of being less than 1/500, striving to achieve the target of being less than 1/600, adjusting the first jack 4 and/or the second jack 6 for adjustment until the verticality meets the design requirement, and fixing the steel upright 1 by using the first jack 4 and the second jack 6.
The upper part of the steel upright post 1 is also provided with a guide post, the control frame 3 is connected with the guide post through an adjusting pull rod 12, and when the first jack 4 and the second jack 6 cannot or have a small adjusting effect, the adjusting pull rod 12 is adopted to be combined with the jacks to adjust the verticality until the requirements are met.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that may be made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention.
Claims (9)
1. A steel upright post and lower pile body accurate positioning connection structure is characterized by comprising a steel upright post (1), a drilling pile connected below the steel upright post (1), a supporting platform (8) connected on the ground, a bearing arm (9) connected on the supporting platform (8) and detachably connected with the steel upright post (1), a control frame (3) connected on the supporting platform (8), a first jack (4) connected between the control frame (3) and the steel upright post (1) in the horizontal direction, a bracket (2) connected on the steel upright post (1), a protective cylinder (5) connected below the ground of the steel upright post (1) and positioned at the periphery of the steel upright post (1), a second jack (6) connected between the protective cylinder (5) and the steel upright post (1) in the horizontal direction, and a verticality adjusting controller (11) connected with the first jack (4) and the second jack (6) and positioned on the ground, the inclination measuring device comprises an inclination measuring pipe (7) connected to the outer side of the steel upright post (1) and an inclinometer (10) which is connected with the inclination measuring pipe (7) and is positioned on the ground; the first jack (4) and the second jack (6) are connected in parallel with the verticality adjusting controller (11).
2. The structure for accurately positioning and connecting the steel upright post and the lower pile body is characterized in that the control frame (3) comprises control frame upright posts (31) arranged in a square shape and control frame cross rods (32) connected to the tops of the control frame upright posts (31), and the height of the control frame upright posts (31) is adapted to the installation elevation of the steel upright post (1).
3. The structure for accurately positioning and connecting the steel upright post and the lower pile body according to claim 2, wherein the control frame cross rod (32) is horizontally shaped like a Chinese character 'hui' and a reinforcing rod is connected between the two square shapes.
4. The accurate positioning and connecting structure of the steel upright post and the lower pile body according to claim 3, wherein the size of the internal square in the control frame cross rod (32) corresponds to that of the steel upright post (1), the reinforcing rod between the two square in the control frame cross rod (32) is provided with connecting holes at intervals, and the connecting holes are detachably connected with the steel upright post (1) through the adjusting pull rod (12).
5. The structure for accurately positioning and connecting the steel upright post and the lower pile body is characterized in that the first jacks (4) are detachably connected to the control frame upright posts (31) and are symmetrically arranged on the ring of the steel upright post (1) at intervals, the first jacks (4) are horizontally arranged, and the extending portions of the first jacks (4) are jacked on the outer wall of the steel upright post (1).
6. A steel upright post and lower pile body precise positioning connection structure as claimed in claim 5, wherein the first jack (4) overhanging part is connected with an arc cushion pad corresponding to the outer wall connection of the steel upright post (1).
7. A steel upright post and lower pile body accurate positioning connection structure as claimed in claim 6, wherein the fixed end of the second jack (6) is connected with the pile casing (5) and symmetrically arranged on the ring shape of the steel upright post (1) at intervals, the outer extending end abuts against the outer wall of the steel upright post (1), and the outer extending part of the second jack (6) is connected with an arc cushion corresponding to the outer wall connection of the steel upright post (1).
8. The accurate positioning and connecting structure of the steel upright post and the lower pile body according to claim 1, characterized in that the top slope of the supporting platform (8) is not more than 1%, and the supporting platform (8) is provided with a positioning cross line corresponding to the center of the steel upright post (1).
9. The precise positioning and connecting structure of the steel upright post and the lower pile body according to claim 1, wherein the diameter of the pile casing (5) is not less than 20cm larger than the diameter of the drilled pile; the top of the pile casing (5) is fixedly connected with a supporting platform (8); the lower part in the pile casing (5) can be detachably connected with at least 4 second jacks (6), and the second jacks (6) are arranged at intervals in the circumferential direction of the pile casing (5) and are correspondingly provided with displacement sensors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122119696.8U CN215518768U (en) | 2021-09-03 | 2021-09-03 | Accurate location connection structure of steel stand and lower part pile body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122119696.8U CN215518768U (en) | 2021-09-03 | 2021-09-03 | Accurate location connection structure of steel stand and lower part pile body |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114808940A (en) * | 2022-06-06 | 2022-07-29 | 江苏通州基础工程有限公司 | Steel pipe column first-inserting construction process |
| CN118547682A (en) * | 2024-07-29 | 2024-08-27 | 杭萧钢构(洛阳)有限公司 | Suspension embedded type steel column base construction device and method |
-
2021
- 2021-09-03 CN CN202122119696.8U patent/CN215518768U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114808940A (en) * | 2022-06-06 | 2022-07-29 | 江苏通州基础工程有限公司 | Steel pipe column first-inserting construction process |
| CN118547682A (en) * | 2024-07-29 | 2024-08-27 | 杭萧钢构(洛阳)有限公司 | Suspension embedded type steel column base construction device and method |
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