Construction method of cup-shaped independent foundation and supporting column connecting combination

Abstract

The invention discloses a cup-shaped independent foundation and supporting column connecting assembly construction method which comprises the following steps that a cup-shaped independent foundation and a supporting column are prefabricated, when the cup-shaped independent foundation is prefabricated, a connecting bolt is pre-buried at the bottom in a cup opening of the cup-shaped independent foundation, and when the supporting column is prefabricated, a column end flange plate is fixedly connected to the bottom of the supporting column; a nut is screwed into the top of the connecting bolt, then an adjustable flange plate is assembled in a penetrating mode, and the elevation of the adjustable flange plate on the connecting bolt is adjusted by rotating the nut at the bottom of the adjustable flange plate according to the column top elevation when the supporting column is implemented; and the supporting column is hoisted, the column end flange plate is assembled at the top of the connecting bolt in a penetrating mode, then a nut in threaded connection with the connecting bolt is screwed into the top of the column end flange plate, and the column end flange plate and the adjustable flange plate are stably assembled in a butt joint mode. By means of the construction method of the cup-shaped independent foundation and supporting column connecting combination, the convenience and efficiency of steel structure greenhouse supporting structure construction are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of supports, and in particular relates to a construction method for a cup-shaped independent foundation and a support column connection assembly. Background Art

[0002] The transportation channel of the highway needs to build a steel structure greenhouse for special purposes such as shading (bridges or sections between tunnels), sound insulation (residential areas), and toll collection. During the specific construction, the supporting center column of the greenhouse (multiple columns are arranged in rows along the extension direction of the greenhouse) is located on the central dividing strip of the highway. At present, the supporting center column usually adopts the form of pile foundation, which has the disadvantages that communication silicon core tubes are generally set about 60cm below the ground surface of the central dividing strip. They are horizontally distributed and there are many of them. These silicon core tubes will hinder the construction of the pile foundation, which not only affects the construction efficiency, but also makes the pile foundation impossible to construct due to the inability to avoid. In addition, the pile foundation is cast on site, and the pile top elevation of the pile foundation arranged in rows may be inconsistent due to casting deviation, thereby affecting the success rate and efficiency of the overlap with the greenhouse support beam. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a construction method for a cup-shaped independent foundation and support column connection assembly so as to improve the convenience and efficiency of the construction of a steel structure greenhouse support structure.

[0004] The present invention solves the above-mentioned problem by the following technical means: A construction method of a cup-shaped independent foundation and support column connection assembly comprises the following steps: S1: Prefabricate the cup-shaped independent foundation and the supporting column. When prefabricating the cup-shaped independent foundation, embed the connecting bolts at the bottom of the cup mouth of the cup-shaped independent foundation. When prefabricating the supporting column, fix the connecting column end flange at the bottom of the supporting column. S2: Screw in the nut at the top of the connecting bolt, then insert and assemble the adjustable flange. According to the top elevation of the supporting column during implementation, rotate the nut at the bottom of the adjustable flange to adjust the elevation of the adjustable flange on the connecting bolt. S3: Lift the support column so that the column end flange is inserted and assembled on the top of the connecting bolts and docked with the adjustable flange. Then, screw the nut connected to the thread of the connecting bolt into the top of the column end flange to firmly dock and assemble the column end flange and the adjustable flange.

[0005] In the process of implementing the above solution, based on the requirements of flange connection, the connecting bolts are arranged vertically at the bottom of the cup mouth, and multiple bolts are arranged at intervals in the circumferential direction.

[0006] Furthermore, a fixing flange is embedded in the cup-shaped independent foundation, and the bottom end of the connecting bolt passes through the fixing flange and is fixed on the upper and lower sides of the fixing flange by nuts threadably connected to the connecting bolt.

[0007] Furthermore, the space below the adjustable flange and the cup mouth forms a first grouting area, and the adjustable flange is provided with grouting holes for grouting into the first grouting area.

[0008] Furthermore, the space enclosed by the support column and the cup mouth forms a second grouting area.

[0009] Furthermore, the cup-shaped independent foundation, the fixing flange and the connecting bolts are prefabricated in one piece.

[0010] Furthermore, the support column and the column end flange are prefabricated in one piece.

[0011] Furthermore, the support column is a cylinder.

[0012] Furthermore, the cup-shaped independent foundation is pre-embedded with bidirectional stress-bearing steel bars and can be extended.

[0013] In addition, the inner wall of the cup mouth of the cup-shaped independent foundation is provided with vertical steel bars at intervals along the circumferential direction, and a steel cage is formed by winding spiral stirrups, so that a concrete layer is poured outside the support column based on the steel cage to improve the anti-collision capability.

[0014] Beneficial effects of the present invention: The construction method of the cup-shaped independent foundation and support column connection assembly of the present invention comprises the following steps: prefabricating the cup-shaped independent foundation and the support column, when prefabricating the cup-shaped independent foundation, pre-embedding the connecting bolts at the bottom of the cup mouth of the cup-shaped independent foundation, and when prefabricating the support column, fixing the connecting column end flange at the bottom of the support column; screwing a nut into the top of the connecting bolt, and then inserting and assembling the adjustable flange, and adjusting the elevation of the adjustable flange on the connecting bolt by rotating the nut at the bottom of the adjustable flange according to the column top elevation when the support column is implemented; hoisting the support column, so that the column end flange is inserted and assembled on the top of the connecting bolt, and docked with the adjustable flange, and then screwing a nut threadedly connected to the connecting bolt into the top of the column end flange, so that the column end flange and the adjustable flange are firmly docked and assembled. The construction method of the cup-shaped independent foundation and support column connection assembly of the present application, its supporting structure is composed of a cup-shaped independent foundation and a support column. The cup-shaped independent foundation and the support column can be prefabricated in advance, without the need for on-site pouring, and are easy to excavate and install on site, and can be implemented with quality and safety. At the same time, based on the flange assembly form, the column top elevation of the support column can be fine-tuned, eliminating the influence of the inconsistent column top elevation caused by the longitudinal and transverse slopes of the road surface, thereby effectively improving the convenience and efficiency of the construction of the steel structure greenhouse support structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present invention will become clearer and more specific. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0018] like Figure 1 As shown, this embodiment provides a construction method for a cup-shaped independent foundation and a support column connection assembly, comprising the following steps: S1: Prefabricate a cup-shaped independent foundation 1 and a support column 5. When prefabricating the cup-shaped independent foundation 1, embed a connecting bolt 2 at the bottom of the cup mouth of the cup-shaped independent foundation 1. When prefabricating the support column, fix a connecting column end flange 4 at the bottom of the support column 5. S2: Screw in a nut at the top of the connecting bolt 2, then insert and assemble the adjustable flange 3, and according to the top elevation of the support column 5 when it is implemented, rotate the nut at the bottom of the adjustable flange 3 to adjust the elevation of the adjustable flange 3 on the connecting bolt 2; S3: hoist the support column 5, so that the column end flange 4 is inserted and assembled on the top of the connecting bolt 2, and is butt-jointed with the adjustable flange 3, and then the nut threadedly connected with the connecting bolt 2 is screwed into the top of the column end flange 4, so that the column end flange 4 and the adjustable flange 3 are firmly butt-jointed. In this embodiment, based on the requirements of flange connection, the connecting bolts are arranged vertically at the bottom of the cup mouth, and multiple bolts are arranged at intervals in the circumferential direction.

[0019] The cup-shaped independent foundation can be stepped or sloped. When constructed in the middle isolation zone of a highway, the bottom of the cup-shaped independent foundation is located on the upper part of the silicon core tube group. The wide base cross-section spans the silicon core tube group and can withstand the load transmitted from the column end. The lower part of the silicon core tube group is a roadbed soil with high compaction and high bearing capacity, and the surrounding of the silicon core tube is a cement water-stabilizing layer. The overall bearing capacity is strong and can meet the requirements of the cup-shaped independent foundation for bearing capacity.

[0020] The space below the adjustable flange and the cup opening forms a first grouting area 8, and the adjustable flange is provided with grouting holes 7 for grouting into the first grouting area. The space between the support column and the cup opening forms a second grouting area 6.

[0021] The cup-shaped independent foundation, the fixing flange and the connecting bolts are prefabricated in one piece. The support column and the column end flange are prefabricated in one piece. The support column can be a prefabricated steel tube concrete column or a prefabricated PC column, preferably a prefabricated steel tube concrete column. The fire resistance of the prefabricated steel tube concrete column is better than that of pure steel column and reinforced concrete column. When the prefabricated steel tube concrete column is damaged, the damaged section is cut off and replaced with a new column section. The cut section is bonded with structural adhesive and the external sleeve steel pipe is welded. The construction is fast and convenient.

[0022] In this embodiment, the support column is a cylinder, and accordingly, the cup mouth of the cup-shaped independent foundation is also a round cup mouth.

[0023] Since the length of the prefabricated support column is fixed, and the top elevation of the prefabricated column is fixed, and the elevation of the bottom of the column changes due to the influence of the longitudinal and transverse slopes of the road surface; the elevation of the adjustable flange is adjusted by lifting (rotating the nut on the lower side of the adjustable flange) to adapt to the length of the prefabricated support column, so that the top elevation of the support column after construction meets the design requirements, so as to facilitate the overlap with the support beam of the greenhouse. The process of installing the support column is as follows: adjust the elevation of the adjustable flange and fill the first grouting area with high-grade concrete or epoxy mortar. Lift the prefabricated support column, dock the column end flange with the adjustable flange and tighten the corresponding nuts, and then use high-grade concrete mortar or epoxy resin mortar to fill the second grouting area.

[0024] After the support column is exposed to the road surface, it is connected to the crash barrier wall. At this time, the circular support column may protrude from both sides of the crash barrier wall (that is, the diameter of the cylinder is greater than the thickness of the crash barrier). Since it is set as a cylinder, the protruding surface is an arc shape, which does not cause vehicle scratches and does not affect the crash resistance of the crash barrier wall. The crash barrier wall and the circular support column can jointly resist vehicle collisions without being damaged.

[0025] The cup-shaped independent foundation is pre-embedded with bidirectional stress-bearing steel bars 10, which is convenient for extending the span of the cup-shaped independent foundation by extension, or anchoring the bidirectional stress-bearing steel bars to the cement water-stabilizing layer to enhance the overall anti-collision, anti-pulling, wind resistance and earthquake resistance formed by the support column and the cup-shaped independent foundation.

[0026] In addition, the inner wall of the cup mouth of the cup-shaped independent foundation is provided with vertical steel bars at intervals along the circumferential direction, and a steel cage is formed by winding spiral stirrups, so that a concrete layer is poured outside the support column based on the steel cage to improve the anti-collision capability.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A construction method for a cup-shaped independent foundation and support column connection assembly, characterized in that: The steps include: S1: Prefabricate a cup-shaped independent foundation (1) and a support column (5). When prefabricate the cup-shaped independent foundation (1), a connecting bolt (2) is embedded at the bottom of the cup mouth of the cup-shaped independent foundation (1). When prefabricate the support column (5), a connecting column end flange (4) is fixed at the bottom of the support column (5); S2: Screw in a nut at the top of the connecting bolt (2), then insert and assemble the adjustable flange (3), and according to the elevation of the top of the support column (5) when it is implemented, rotate the nut at the bottom of the adjustable flange (3) to adjust the elevation of the adjustable flange (3) on the connecting bolt (2); S3: Lift the support column (5) so that the column end flange (4) is inserted and assembled on the top of the connecting bolt (2) and docked with the adjustable flange (3). Then, screw the nut threadedly connected to the connecting bolt (2) into the top of the column end flange (4) so ​​that the column end flange (4) and the adjustable flange (3) are firmly docked and assembled.

2. The construction method of the cup-shaped independent foundation and support column connection assembly according to claim 1, characterized in that: A fixing flange (9) is pre-buried in the cup-shaped independent foundation (1), and the bottom end of the connecting bolt (2) passes through the fixing flange (9) and is fixed on the upper and lower sides of the fixing flange (9) by nuts threadedly connected to the connecting bolt.

3. The construction method of the cup-shaped independent foundation and support column connection assembly according to claim 2, characterized in that: The space below the adjustable flange (3) and the cup mouth forms a first grouting area (8), and the adjustable flange (3) is provided with a grouting hole (7) for grouting into the first grouting area.

4. The construction method of the cup-shaped independent foundation and support column connection assembly according to claim 3 is characterized in that: The space enclosed by the support column (5) and the cup mouth forms a second grouting area (6).

5. The construction method of the cup-shaped independent foundation and support column connection assembly according to claim 4 is characterized in that: The cup-shaped independent foundation (1), the fixing flange (9) and the connecting bolts (2) are prefabricated in one piece.

6. The construction method of the cup-shaped independent foundation and support column connection assembly according to claim 5, characterized in that: The support column (5) and the column end flange (4) are prefabricated in one piece.

7. The construction method of the cup-shaped independent foundation and support column connection assembly according to claim 6, characterized in that: The support column (5) is a cylinder.

8. The construction method of the cup-shaped independent foundation and support column connection assembly according to claim 7, characterized in that: The cup-shaped independent foundation (1) is pre-embedded with bidirectional stress-bearing steel bars (10).

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