CN110700274A

CN110700274A - Mechanically-connected assembled stand column and stand column pile

Info

Publication number: CN110700274A
Application number: CN201910946749.8A
Authority: CN
Inventors: 刘斐然
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-07
Filing date: 2019-10-07
Publication date: 2020-01-17

Abstract

The invention discloses a mechanically connected assembled upright post and upright post pile, wherein the upright post is made of section steel or a section steel combined structure; the upright post lengthening adopts the assembly type mechanical connection; the upright posts are mechanically connected with the upright post piles in an assembling manner; the length of the upright post pile is arranged according to modulization; the vertical column pile lengthening adopts assembled mechanical connection, each main rib adopts a mechanical connecting piece for butt joint, the concrete contact surface adopts high-strength adhesive for bonding, the high-strength adhesive is in a fluid state during construction and then is hardened into a solid state. The assembled upright post and the upright post pile have the social benefits of environmental protection, safety and reliability, can reduce the manufacturing cost and shorten the construction period, and have great economic value.

Description

Mechanically-connected assembled stand column and stand column pile

Technical Field

The invention relates to the technical field of civil engineering, in particular to a pile foundation and basement structure column of building engineering, and a vertical column pile structure for deep foundation pit support.

Background

In the process of excavating a foundation pit, the inner support is a common supporting structure, and all the inner supporting structures need to be provided with stand columns and stand column piles to support the weight of the inner support, construction load and supporting component force. The current stand is usually formed by welding profile steel, and the stand of segmentation processing is formed by the joint plate welding when the installation, wastes time and energy, and welding quality is difficult to guarantee, and welding process has also caused the pollution of environment, and the welding work progress of joint has taken longer stand construction period.

For areas with high environmental protection requirements, multi-storey basements and high-rise building structures, and when in-situ protection and basement excavation are needed for protective buildings, a reverse method is usually adopted, namely, the construction of the basements and the construction of buildings above the ground are simultaneously carried out, so that the construction period of the total building is shortened. Under such conditions, it is required to provide a column-pile type engineering pile foundation, an underground structural column, which is used as both a stand column during construction and a permanent structural column.

The stand pile that uses at present almost all is the bored concrete pile, and the harm that the retaining wall mud that the bored concrete pile produced in the work progress caused the environment is difficult to avoid, and in addition, the concrete of pouring under water and placing the steel reinforcement cage and insert the stand process, the straightness that hangs down of its stand and the quality of stand pile all are difficult to guarantee, and the concrete breaks away when super-grouted concrete arouses the excavation, has also produced a large amount of rubbish. When the engineering pile of this project is the precast pile, its stand stake all can't share with the engineering pile, need set up bored pile alone and make the stand stake, this must lead to the fact the increase of engineering cost.

The connection of the columns used at present is realized by field welding.

In the top-down construction method, the construction period and the cost ratio of the upright column and the upright column pile are higher and higher in the inner support supporting system.

Therefore, the engineering industry needs to find an assembly type upright post and an upright post pile which meet the requirements of one-post-one-pile and internal support in reverse construction engineering, which can overcome the defects of the traditional upright post and upright post pile, reduce the manufacturing cost, accelerate the construction speed, protect the environment and realize civilized construction.

Disclosure of Invention

The invention aims to solve the technical problems that the quality of butt joint of the existing upright post and an upright post pile by a welding method is not reliable, the bearing force caused by slurry retaining walls is reduced, the underwater concrete construction quality is poor and the like, and the defects of long construction period, high construction cost, difficult construction and the like of the traditional upright post and the upright post pile are overcome, and the mechanically connected assembled upright post and the upright post pile are provided.

In order to achieve the purpose, the technical scheme adopted by the patent is as follows:

the upright post is made of section steel or lattice columns combined by the section steel; the length of the upright post is arranged according to modulization; the two ends of the upright post are standard joints; the upright post lengthening adopts the assembly type mechanical connection; the upright post pile is a concrete precast pile or a profile steel pile; an anchoring part connected with the upright post is embedded in the top area of the concrete prefabricated upright post pile; the upright posts are mechanically connected with the upright post piles in an assembling manner; the length of the upright post pile is arranged according to modulization; the vertical column pile lengthening adopts assembled mechanical connection, each main rib adopts a mechanical connecting piece for butt joint, the concrete contact surface adopts high-strength adhesive for bonding, the high-strength adhesive is in a fluid state during construction and then is hardened into a solid state.

The upright columns are made of H-shaped steel, the standardized joint screw holes are distributed on the web plates at the end parts and the flange plates at the two sides, and the two sections of H-shaped steel columns are connected together through connecting steel plates and bolts.

The stand is a standardized joint of a steel pipe and is a steel plate connecting piece tightly attached to the inner wall of the steel pipe, screw holes are distributed on the steel plate connecting piece, nuts are fixed on the steel plate connecting piece, and the upper section of steel pipe stand and the lower section of steel pipe stand are assembled together through bolt connection. The standard joint of the upright post, which is a steel pipe, is a flange plate connecting piece, one is an inner flange plate connecting piece, the outer diameter of the flange plate is consistent with that of the steel pipe, and the flange plate is welded on the end face of the steel pipe; the other is an external flange plate connecting piece, the inner diameter of the flange plate is consistent with the inner diameter of the steel pipe, and the flange plate is welded on the end face of the steel pipe; the upper section steel pipe welded with the inner flange plate is provided with an installation operation window; the upper section of steel pipe column and the lower section of steel pipe column are assembled together through the bolt connection of the flange plates.

The upright posts are of an L-shaped steel combined structure, the L-shaped steel is distributed on four angular points and welded together through steel plate batten strips to form a rectangular section; one standardized joint is an externally-attached L-shaped steel connecting piece distributed on four corners, and two sections of L-shaped steel combined upright columns are connected to one section of the standardized joint through bolts of the L-shaped steel connecting piece across joints; the other standardized joint is a flange plate connecting piece welded at the end part of the upright post, and the upper and lower sections of steel pipe upright posts are assembled together through flange plate bolt connection.

The steel tube stand column is divided into a square steel tube stand column and a round steel tube stand column

The upright post pile is divided into a prefabricated reinforced concrete solid square pile, a prefabricated reinforced concrete tubular pile, a prefabricated steel pipe concrete tubular pile, a steel pipe pile and an H-shaped steel pile;

the upright post pile is connected with the upright post through an embedded sleeve and an anchoring piece, a connecting flange plate is arranged at the top end of the embedded anchoring piece, and the connecting flange plate is connected with the upper upright post through a bolt. The upright post pile is a steel pipe pile, and is connected with the upright post at the upper part by arranging a connecting flange plate at the end part of the steel pipe pile.

The pile sinking method of the upright post pile is divided into three types, wherein the first type is that external force is applied to the pile position to insert directly; the second type is that a solidified body, such as fluid concrete or cement soil, is poured into a hole after a pile position is led, and then the solidified body is inserted; the third type is that the stratum is sprayed or stirred on the pile position, curing agent is added to form fluid curing soil, and then the soil is implanted.

The invention has the advantages of strong field construction operability, high component assembly degree and high operation efficiency, can ensure the safety and construction quality of the structure, and can greatly shorten the construction period.

Drawings

The invention is further described with reference to the following figures and detailed description.

FIG. 1 is a schematic diagram of hole distribution of assembled joints of H-shaped steel columns;

FIG. 2 is a sectional view of the H-shaped steel column fabricated joint arrangement steel plate connection;

FIG. 3 is a schematic view of a steel pipe column assembled inner flange joint structure;

FIG. 4 is a schematic structural view of an assembled inner flange of a square steel tube column;

FIG. 5 is a schematic view of a steel pipe column assembled external flange joint structure;

FIG. 6 is a schematic structural view of an assembled external flange of a square steel tube column;

FIG. 7 is a schematic view of a lattice column fabricated flange joint configuration;

FIG. 8 is a schematic view of a joint structure of a circular steel tube column assembled inner flange

FIG. 9 is a schematic view of a circular steel tube column assembled inner flange structure

FIG. 10 is a schematic view of an assembled outer flange joint structure of a circular steel tube column

FIG. 11 is a schematic view of a circular steel tube column assembled outer flange structure

FIG. 12 is a schematic view showing the connection between a prefabricated stand column pile and an H-shaped steel stand column;

FIG. 13 is a schematic diagram showing arrangement of embedded parts of a connecting joint of a prefabricated square upright post pile and an H-shaped steel upright post;

FIG. 14 is a schematic view of the connection of a prefabricated stand column pile with a steel pipe stand column;

FIG. 15 is a schematic diagram showing the arrangement of embedded parts of a connecting joint of a prefabricated square upright post pile and a square steel tube upright post;

FIG. 16 is a schematic diagram showing arrangement of embedded parts of a connecting joint of a prefabricated square upright post pile and a round steel tube upright post;

FIG. 17 is a schematic view of the connection of a prefabricated stud pile to a lattice column;

FIG. 18 is a schematic diagram showing the arrangement of embedded parts of a connecting joint of a prefabricated upright post pile and a lattice post;

FIG. 19 is a schematic diagram of an arrangement of pre-buried connection sleeves of prefabricated square stud assembled joints

FIG. 20 is a schematic view of an arrangement of pre-buried connection sleeves of prefabricated tubular stud fabricated joints

FIG. 21 is a schematic view of arrangement of connecting holes of inner flanges of fabricated joints of circular steel tube stand column piles

FIG. 22 is a schematic view showing the arrangement of connecting holes of a fabricated joint of a concrete filled steel tubular stud

FIG. 23 is a schematic diagram of hole distribution of flange connection of fabricated joint of concrete filled steel tube stud

Fig. 24 is a schematic view of joint structure for mechanically connecting main reinforcements of precast pile

FIG. 25 is a schematic view of the joint connection process of the mechanical connection of the main reinforcement of the precast pile

FIG. 26 is a schematic view of the joint connection locking of the mechanical connection of the precast pile main reinforcements

FIG. 27 is a schematic view showing the connection of steel plate connectors of steel pipe columns

FIG. 28 is a schematic view showing the connection of L-shaped steel connecting members of lattice columns

In the figure: 1-H section steel, 11-flange connecting steel plate, 12-web connecting steel plate and 13-connecting screw hole; 14-connecting bolt, 15-H shaped steel web, 16-H shaped steel flange plate, 2-steel pipe, 21-square connecting inner flange, 22-square connecting outer flange, 23-operation windowing, 24-connecting steel plate, 3-lattice column, 31-connecting flange, 32-L shaped steel, 33-connecting batten plate, 34-connecting L shaped steel, 4-round steel pipe, 41-circular connecting inner flange, 42-circular connecting outer flange, 5-precast pile, 51-main steel bar, 52-stirrup, 53-square pile, 54-pipe pile, 55-steel pipe concrete pile, 56-column, 71-column and column pile connecting end plate, 72-column and column pile connecting bolt, 73-column pile inner embedded connecting end plate, 74-column pile embedded anchor, 75-embedded sleeve, 76-column pile inner embedded connecting end plate screw hole, 8-mechanical connecting piece, 9-column pile bonding, 81-small sleeve, 82-connecting bolt, 83-large sleeve, 84-latch, 85-positioning fixing nut, 86-combination ring, 87-elastic pressing sheet.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

Example one, H-shaped steel upright column fabricated joint and connection with precast pile

Fig. 1 is a schematic diagram showing connection and hole distribution of an assembled joint of an H-beam column, wherein connection holes 13 are arranged on flange plates 16 and web plates 15 on two sides of a joint part of the H-beam 1, connection screw holes 13 are also arranged on a flange connection steel plate 11 and a web plate connection steel plate 12 according to the same size specification, two sections of the H-beam 1 are butted, and connection bolts 14 are installed, so that the assembled connection of the H-beam column is realized, as shown in fig. 2.

Fig. 12 is a schematic view showing the connection between a prefabricated stud and an H-section steel stud, and it can be seen that a connecting plate 71 is welded to the end of the H-section steel 1 and connecting screw holes are arranged.

To achieve the assembly connection with the precast concrete stud 5, the anchor 74 is embedded in the end of the stud 5 and tied with the main reinforcement 51 and the stirrup 52 in the stud 5. A connecting plate 73 is welded at the end part of the embedded anchor 74, and the upper surface of the connecting plate 73 and the top surface of the upright post 5 are kept on the same horizontal plane, namely, the connecting plate 73 is embedded in the concrete of the main post 5. Coupling screw holes and sleeves are provided on the coupling plate 73 as shown in fig. 13. And butting the H-shaped steel upright 1 with the precast pile 5, aligning the connecting holes and screwing the bolts 72 to realize the assembly type connection, as shown in figure 12.

Example two, steel pipe upright column fabricated joint and connection with precast pile

Fig. 3 is a schematic view of a steel pipe column assembled inner flange joint structure. As can be seen from fig. 3, an inner flange 21 is welded to the end of the steel pipe 2, the outer edge of the inner flange 21 is aligned with the outer edge of the square steel pipe, and screw holes 13 are circumferentially arranged as shown in fig. 4. When the external flange plate 22 is welded at the end, the inner edge of the external flange plate 22 is aligned with the inner edge of the square steel pipe, and the screw holes 13 are arranged along the periphery, as shown in fig. 5 and 6. Fig. 9 and 11 show the structural form of the internal flange 41 and the external flange 42 of the circular steel tube, the external diameter of the internal flange 41 is the same as the external diameter of the steel tube 2, the internal diameter of the external flange 42 is the same as the internal diameter of the steel tube 2, and fig. 10 shows the connection diagram of the external flange of the circular steel tube.

For both the internally square flange 21 and the internally circular flange 41, the steel pipe 2 is provided with an operation window 23 for bolt tightening operation.

Another method of butt-jointing steel pipe columns 2 is to connect steel plate connecting pieces 24 across seams, as shown in fig. 27. Holes are distributed on the joint part of the steel pipe and the steel plate connecting piece 24, the steel plate connecting piece 24 is firstly inserted into the lower section of the steel pipe and is tightly screwed by the bolt 14 close to the inner wall. Then, the upper section steel pipe is butted with the lower section steel pipe, the connecting holes in the connecting steel plate connecting piece 24 are aligned with the connecting holes arranged in the upper section steel pipe, and the bolt 14 is screwed down, so that the assembly type connection is completed.

Fig. 14 is a schematic diagram of the connection between the prefabricated stand column pile and the steel pipe stand column, and it can be seen from fig. 14 that in order to realize the assembly connection between the steel pipe stand column 2 and the prefabricated stand column pile 5, a corresponding connection device needs to be installed at the connection end of the stand column and the stand column pile. Through this connecting device, realized prefabricated stand pile 5 and steel pipe stand 2's assembled connection, for realizing the convenience of assembly, excavated operation window 23 on steel pipe 2.

Fig. 15 is a schematic layout diagram of an embedded part of a connection joint between a prefabricated square upright post pile and a square steel tube upright post, and as can be seen from fig. 15, each main rib of the prefabricated square upright post pile 53 is connected with a sleeve 75 at the end and embedded in concrete, an anchoring part 74 is embedded at the same time, a connecting steel plate 73 is connected to the end face of the anchoring part 74, and a plurality of connecting screw holes 76 are distributed on the connecting steel plate 73.

Fig. 16 is a schematic diagram showing the arrangement of the pre-embedded part of the connection joint between the prefabricated square upright post pile and the round steel tube upright post, from which the pre-embedded anchoring part 74 and the connection sleeve 75 can be seen, wherein a circular flange 73 is connected to the end surface of the anchoring part 74, and a connection screw hole 76 is distributed on the circular flange.

EXAMPLE III fabricated joints for lattice columns and connections to precast piles

Fig. 7 is a schematic diagram of a lattice column assembly type flange joint structure, and as can be seen from fig. 7, a lattice column 3 with a rectangular cross section is welded by L-shaped steels 32 distributed at four corners through gusset plates 33, a flange plate 31 is welded on the end face of the lattice column 3, and the assembly type connection is realized by bolts 14 through screw holes 13 arranged on the flange plate 31.

Fig. 28 is a schematic view showing the connection of the L-shaped steel connecting members of the lattice column, in which the L-shaped steel connecting members 34 are attached to the outside of four corners, and the upper and lower sections of the lattice column 3 are assembled together by bolts 14 to form an assembled connection.

Fig. 17 shows a schematic connection of the prefabricated stud and the lattice column, and it can be seen from fig. 17 that the lattice column 3 is welded with a flange 71 at the connecting end to be connected with the prefabricated stud 5 in an assembly manner through a bolt 72.

Fig. 18 is a schematic layout of a pre-fabricated column pile and lattice column connection joint embedded part, and it can be seen from the diagram that a sleeve 75 and an anchoring part 74 connected with a main rib are embedded in a pre-fabricated square pile 5, and a rectangular flange 73 is welded on the anchoring part 74 and is provided with a connection hole 76.

Example four, fabricated connection and mechanical connection of precast pile

To realize the assembly type connection of the precast pile, the key is to arrange a reliable and convenient-to-install joint connecting piece at the end part of the precast pile, and the aim that the strength of the joint connecting piece is greater than that of the pile body is realized through the connecting piece. The mechanical connecting piece 8 is realized by butting the main stressed steel bars 51 in the precast pile one by one and bonding the concrete contact surface 9.

Fig. 19 is a schematic view showing the arrangement of the prefabricated joint embedded sleeves 75 of the prefabricated square upright piles 53, and fig. 20 is a schematic view showing the arrangement of the prefabricated joint embedded sleeves 75 of the prefabricated tubular upright piles 54, and it can be seen from these two views that the connecting sleeves 75 connected with the main bars are distributed on the end surfaces of the prefabricated piles, and the number of the connecting sleeves is consistent with the number of the main stressed steel bars arranged in the prefabricated piles. For the steel pipe concrete upright post pile 55, fig. 22 is a schematic diagram of the arrangement of the assembly type joint connecting holes 75, the number and the size of the connecting holes 75 are related to the designed bearing capacity of the pile, and are positively related to the diameter and the thickness of the configured steel pipe.

Fig. 23 shows a butt joint of the prefabricated concrete upright pile mechanical connection fabricated joint, and as can be seen from fig. 23, the mechanical connecting piece 8 connects the main stress steel bars 51 in the upper and lower prefabricated piles together, and the concrete contact surface of the prefabricated pile is bonded 9 to achieve the connection effect.

Fig. 24 is a schematic structural view showing a mechanical connection joint of precast pile main bars, and as can be seen from fig. 24, the connection joint mainly comprises: the device comprises a small sleeve 81, a connecting bolt 82, a large sleeve 83, a latch 84, a positioning fixing nut 85, a combined ring 86, an elastic pressing sheet 87 and the like. The small sleeve 81 and the large sleeve 83 are respectively connected with the main stress steel bars 51 of the upper precast pile section and the lower precast pile section; the combination ring 86 combines the four latches 84 together; the upper end of the connecting bolt 82 is provided with threads and is fixed on the small sleeve 81 through the threads; the large sleeve 83 is provided with elements such as a latch 84, a positioning fixing nut 85, a combined ring 86, an elastic pressing sheet 87 and the like; when the connecting screw bolt 82 is inserted into the center of the positioning fixing nut 85, the connecting screw bolt 82 first pushes the latch 84 open, and then continues to push downwards, and when the elastic pressing piece 87 is pressed, the elastic pressing piece 87 elastically deforms to push the peripheral latch 84 to move towards the connecting screw bolt 82, as shown in fig. 25.

When the connecting bolt 82 is continuously inserted and presses the elastic pressing piece 87, the elastic pressing piece 87 pushes the peripheral latch 84 to move towards the connecting bolt 82 through elastic deformation, and the peripheral latch 84 is tightly held in the locking groove on the connecting bolt 82 and is tightly held more and more, as shown in fig. 26, so that the mechanical connection of the two reinforced concrete precast pile stressed main reinforcements 51 is realized.

Example five, fabricated connection of steel pipe pile

Fig. 21 is a schematic view showing arrangement of inner flange connection holes of an assembled joint of a circular steel tube stud 56, and it can be seen from the figure that the circular steel tube stud 56 is connected by bolts through an inner flange 31 welded to an end face and having connection holes 13 arranged thereon by means of an opened operation window. The connecting method does not increase the external section size of the upright post pile, and is beneficial to pile sinking construction of the upright post pile.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A mechanically connected assembled upright post and upright post pile is characterized in that the upright post is made of section steel or a section steel combined structure; the length of the upright post is arranged according to modulization; the two ends of the upright post are standard joints; the upright post lengthening adopts the assembly type mechanical connection; the upright post pile is a concrete precast pile or a profile steel pile; an anchoring part connected with the upright post is embedded in the top area of the concrete prefabricated upright post pile; the upright posts are mechanically connected with the upright post piles in an assembling manner; the length of the upright post pile is arranged according to modulization; the vertical column pile lengthening adopts assembled mechanical connection, each main rib adopts a mechanical connecting piece for butt joint, the concrete contact surface adopts high-strength adhesive for bonding, the high-strength adhesive is in a fluid state during construction and then is hardened into a solid state.

2. The mechanically coupled fabricated vertical column and vertical column pile as claimed in claim 1, wherein the vertical column is H-section steel, screw holes of standardized joints are distributed on the web plate at the end part and the flange plates at both sides, and two sections of the H-section steel vertical column are butt-jointed together by bolts through the connecting steel plates.

3. The mechanically connected assembled post and post pile as claimed in claim 1, wherein the post is a steel pipe, the standardized joints are steel plate connectors tightly attached to the inner wall of the steel pipe, the steel plate connectors are provided with screw holes and fixing nuts, and the upper and lower sections of steel pipe posts are assembled together by means of bolt connection.

4. The mechanically-coupled fabricated column and column pile as claimed in claim 1, wherein the column is a steel pipe, the standardized joints are flange connectors, one is an inner flange connector, and the flange has an outer diameter identical to that of the steel pipe and is welded to the end face of the steel pipe; the other is an external flange plate connecting piece, the inner diameter of the flange plate is consistent with the inner diameter of the steel pipe, and the flange plate is welded on the end face of the steel pipe; the upper section steel pipe welded with the inner flange plate is provided with an installation operation window; the upper section of steel pipe column and the lower section of steel pipe column are assembled together by connecting the flange plates through bolts.

5. The mechanically connected fabricated vertical column and vertical column pile as claimed in claim 1, wherein the vertical column is a lattice column composed of L-shaped steel, the L-shaped steel is distributed at four angular points and welded together by steel plate lacing bars to form a rectangular cross section; one type of standardized joint is an externally-attached L-shaped steel connecting piece distributed on four corners, and two sections of lattice columns are connected together by bolts through the L-shaped steel connecting piece across joints; the other type of the standardized joint is a flange plate connecting piece welded at the end part of the upright post, and the upper section of the latticed post and the lower section of the latticed post are assembled together by connecting bolts through screw holes of the flange plate.

6. The mechanically coupled fabricated vertical column and vertical column pile according to claim 1, wherein the steel pipe vertical column is divided into a square steel pipe vertical column and a circular steel pipe vertical column

7. The mechanically-connected assembled upright post and upright post pile as claimed in claim 1, wherein the upright post pile is divided into a prefabricated reinforced concrete solid square pile, a prefabricated reinforced concrete tubular pile, a prefabricated steel pipe concrete tubular pile, a steel pipe pile and an H-shaped steel pile;

8. the mechanically-connected assembled upright post and upright post pile as claimed in claim 1, wherein the connection between the upright post pile and the upright post is realized by connecting the embedded sleeve nut and the anchoring member with a flange plate at the end part of the upper upright post through a bolt.

9. The mechanically connected fabricated vertical column and vertical column pile according to claim 1, wherein the vertical column pile is a steel pipe pile, and is connected to the upper vertical column through a connecting flange provided at an end of the steel pipe vertical column pile.

10. The mechanically-coupled fabricated column and column pile according to claim 1, wherein the pile sinking method of the column pile is classified into three types, the first type is a direct insertion by applying an external force at a pile position; the second type is that a solidified body, such as fluid concrete or cement soil, is poured into a hole after a pile position is led, and then the solidified body is inserted; the third type is that the stratum is sprayed or stirred on the pile position, curing agent is added to form fluid curing soil, and then the soil is implanted.