CN207582806U - A kind of fire-proof shock-proof cylinder system constructing structure - Google Patents

Abstract

The utility model discloses a construction structure of a fire-proof and anti-seismic column system, which comprises a plurality of groups of anchor bolts which are respectively pre-buried on the foundation of the platform according to the set position along the horizontal and vertical directions, and each anchor bolt is threaded to be connected with an adjustment bolt. Nuts, each group of anchor bolts are installed with the bottom steel column, and the top and bottom of each steel column are connected with multi-layer upper steel columns, and the upper and lower adjacent two The upper steel column in the root steel column is fixed on the top of the next layer of steel column by bolts, and the column head of each steel column is bolted with a steel mold for the column head. Steel girder installation joints are installed along the horizontal direction on the four walls of the stereotyped steel mold, and steel main beams or steel secondary beams are successively installed between the left and right adjacent steel beam installation joints on the same floor. The structure greatly improves the bearing capacity, rigidity, fire resistance and earthquake resistance of the structure.

Description

Construction structure of a fire-proof and anti-seismic column system

technical field

The utility model relates to a shaped structure of a column head, in particular to a construction structure of a fireproof and anti-seismic column system.

Background technique

With the development of my country's economy and the advancement of science and technology, the height of industrial and civil buildings is increasing, the number of floors is increasing, and the column network is becoming denser. In order to meet the requirements of bearing capacity, the cross-section of the columns at the bottom of the structure The size will inevitably increase, which will not only affect the use and function of the structure, but also form short columns that are not conducive to earthquake resistance. As a new type of structural system, the steel-concrete composite structure utilizes the principle of synergy between steel, steel bars and concrete to greatly improve the bearing capacity, stiffness, fire resistance, and seismic performance of the structure. The four-dimensional integrated work of section steel, steel bars, concrete, and post-shaped steel molds makes the section steel concrete structure have the advantages of greater bearing capacity, greater rigidity, and better seismic performance than traditional reinforced concrete structures. The bearing stiffness of the column head is the key node. Its structural quality must be guaranteed.

The Chinese patent with the application number CN201320501404.X discloses the "node connection structure of steel columns and frame main beams and frame connecting beams", which provides a node connection structure between steel columns and frame main beams and frame connecting beams , including shaped steel columns, frame main beams and frame connecting beams perpendicular to the shaped steel columns, H-shaped steels are arranged inside the shaped steel columns, H-shaped steels have webs, frame main beams, and frame connecting beams have their own main reinforcements, and the shaped steels are in Two upper and lower connection plates are set at the main reinforcement elevation of the main beam of the frame, the main reinforcement perpendicular to the frame main beam and the section steel is welded to the upper surface of the connection plate, and the main reinforcement perpendicular to the section steel of the frame main beam but not intersecting is anchored in the section steel column; the H-section steel A hole is opened on the web, and the main reinforcement perpendicular to the frame connecting beam and the section steel passes through the hole opened on the web, and the main reinforcement perpendicular to the frame connecting beam and the section steel but not intersecting is anchored in the section steel column. This patent is mainly a joint structure of columns and beams. Not suitable for shaped steel columns and column head shaped steel molds.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art, and provide a fire-proof and anti-seismic column system construction structure with convenient construction and installation, firm installation, high installation precision, large structural bearing capacity and rigidity, high fire resistance and anti-seismic performance.

A construction structure of a fire-proof and anti-seismic column system, including multiple groups of anchor bolts that are pre-embedded on the cap foundation along the horizontal and vertical directions according to the set positions. Each group of anchor bolts is composed of multiple anchor bolts. An adjusting nut is threaded on the foot bolt, and the bottom steel column is installed on each set of anchor bolts, and the base plate of the bottom steel column is supported by the corresponding set of anchor bolts. On the adjusting nut of the bottom steel column, a backing plate is inserted on each anchor bolt and a fastening nut and a stop nut are threaded on the top of the bottom plate of the steel column at the bottom layer. The upper and lower connections of the top of the column are provided with multi-layer upper-layer steel columns, and the upper-layer steel columns of the two adjacent upper-lower steel columns are fixed on the top of the next-layer steel column by bolts. A column foot rib is fixed between the bottom of a section steel column and the base plate of the column foot, and a column head shaped steel mold is connected to the column head of each section steel column by bolts, and each column head Steel girder installation joints are installed on the four walls of the shaped steel form along the horizontal direction, steel main beams or steel secondary beams are installed in turn between the left and right adjacent steel beam installation joints on the same floor, Concrete is poured at the bottom of the slab, steel bars are bound around all the steel columns and column molds are installed around the steel bars of the steel columns, steel column concrete is poured in each column mold, and the center of each steel column is The error between the line and the center line of the foundation is not greater than 3.0mm, the deviation between the top elevation of the steel column and the set top elevation is not greater than 2.0mm, and the elevation error of all backing plates is within 1.0mm.

As a new structural system, the steel-concrete composite structure of the utility model utilizes the principle of synergy between steel, steel bars and concrete to greatly improve the bearing capacity, rigidity, fire resistance, and earthquake resistance of the structure. The four-dimensional integrated work of section steel, steel bars, concrete, and post-shaped steel molds makes the section steel concrete structure have the advantages of greater bearing capacity, greater rigidity, and better seismic performance than traditional reinforced concrete structures. Compared with the steel structure, it has the advantages of good fire resistance, good local and overall stability of the structure, and saving steel. In order to solve the spatial distribution relationship between section steel and reinforced concrete at the joints of steel columns in the composite structure, realize the continuous and continuous main reinforcement in the column from bottom to top, in order to facilitate the continuity of concrete column formwork engineering and subsequent concrete pouring operations, and ensure the construction period progress requirements. The structural bearing capacity of the shaped steel mold at the column head is large, which ensures the structural quality of the key nodes.

Description of drawings

Fig. 1 is a structural schematic diagram of a construction structure of a fireproof and anti-seismic column system of the present invention;

Fig. 2 is a schematic diagram of the joint structure of anchor bolts and section steel columns in the structure shown in Fig. 1 .

Detailed ways

Below in conjunction with accompanying drawing, the specific embodiment of the utility model is described in detail.

As shown in the accompanying drawings, a construction structure of a fire-resistant and anti-seismic column system includes multiple sets of anchor bolts 9 pre-buried on the cap foundation in the horizontal and vertical directions according to the set position, and each set of anchor bolts 9 is composed of a plurality of ground bolts. An adjusting nut 7 is threadedly connected to each anchor bolt, and each group of anchor bolts 9 is equipped with a section steel column at the bottom, and the bottom plate of the section steel column at the bottom 5 is supported on the adjusting nuts 7 of a corresponding set of anchor bolts 9, above the base plate 5 of the bottom steel column and on each anchor bolt is inserted a backing plate 10 and screwed with a The fastening nut 6 and a stop nut 8 are connected to the top and bottom of each steel column 3 with a multi-layer upper steel column, and the upper layer of the two adjacent steel columns up and down The shaped steel column is fixed on the top of the next layer of shaped steel column by bolt connection, and a column foot rib 11 is fixed between the bottom of each shaped steel column 3 and the bottom plate 5 of the column foot. The capital of the column is connected with a steel mold 1 for the shape of the column head by bolts, and steel beam installation joints 2 are installed along the horizontal direction on the four walls of each of the steel molds for the shape of the column head. Steel main beams or steel secondary beams are sequentially installed between the steel beam installation joints 2, concrete is poured at the bottom of the column base plate 5 at the lowest level, and section steel column reinforcements are bound around all section steel columns 3 and reinforced in section steel column reinforcements. Column formwork 4 is installed around. Concrete with steel and steel columns is poured in each column formwork 4 . The error between the center line of each steel column and the center line of the foundation is not more than 3.0mm, the deviation between the top elevation of the steel column and the set top elevation is not more than 2.0mm, and the error of the elevation of all backing plates is within 1.0mm.

The construction of this structure includes the following steps:

(1) Multiple sets of anchor bolts 9 are pre-embedded along the horizontal and vertical directions according to the set position on the cap foundation. Each set of anchor bolts 9 is composed of multiple anchor bolts. Adjusting nut 7;

(2) Use a tower crane to hoist the shaped steel column and make the base plate 5 of the shaped steel column supported on the adjusting nuts 7 of a set of anchor bolts 9 correspondingly arranged, then insert a backing plate 10 on each anchor bolt and Screw in a fastening nut 6 and a stop nut 8 in turn, and then adjust the elevation of the adjustment nuts on each group of anchor bolts so that the verticality of the steel column reaches the specification standard. The bottom of the steel column 3 is A column foot rib 11 is fixed between the column foot bottom plate 5, and a column head shaped steel mold 1 is connected with a bolt on the column head of the section steel steel column, and the four walls of the column head shaped steel mold are all along the horizontal The direction is installed with steel beam installation joint 2;

(3) Use two theodolites to observe at the same time, and use the cable wind rope to correct the size of the installed steel column on the bottom layer. The specific steps are: (a) Adjust the plane position of the steel column: first align the centerline of the steel column with the foundation Align the center line, determine the plane position of the shaped steel column, adjust the anchor bolts to control the error between the center line of the shaped steel column and the center line of the foundation within 3.0mm, and then tighten the fastening nut 6 slightly; (b) adjust the bottom plate of the column foot The height of the adjustment nut 7 under 5 controls the verticality of the profiled steel column 3, so that the verticality deviation of the horizontal and vertical two orthogonal directions is corrected to zero when the profiled steel column is in a free state, then tighten the fastening nut 6 and control The deviation between the top elevation of the shaped steel column and the set top elevation shall not exceed 2.0mm to ensure that the displacement and verticality deviation of the shaped steel column meet the acceptance criteria. (c) Tighten each fastening nut 6, stop nut 8 and adjustment nut 7.

(4) Use fine stone concrete one grade higher than the strength grade of the foundation concrete, and perform secondary grouting at the bottom of the column base plate 5, so that the bottom steel column is fixed.

(5) repeat described steps (2)-(4) to complete the installation of the bottommost section steel column on the anchor bolts 9 of all groups;

(6) Install steel main beams or steel secondary beams sequentially between two adjacent steel beam installation joints 2;

(7) Bind the steel bars of the steel columns around each steel column 3 and install the column formwork 4 around the steel bars of the steel columns.

(8) Use bolts to fix the upper layer of steel columns on the top of each steel column;

(9) Install steel main beams or steel secondary beams sequentially between two adjacent steel beam installation joints 2 of the steel column on the last floor;

(10) Bind the profiled steel column reinforcing bars around the profiled steel column 3 of each upper layer, then install the layer column formwork 4 around the profiled steel column reinforcement bar of this layer, and simultaneously the layer column formwork 4 and the corresponding lower floor column formwork 4 fixed connections;

(11) repeat described steps (8)-(10) to complete the construction of the section steel column of all layers;

(12) Concrete the section steel column concrete of all layers in the column formwork 4.

Claims (1)

1. a kind of fire-proof shock-proof cylinder system constructing structure, it is characterised in that：Including according to setting position transversely with longitudinal difference The multigroup foundation bolt being embedded on cushion cap foundation, to each group foot bolt be made of multiple foundation bolts, in each lower margin spiral shell It is threadedly coupled on bolt there are one adjusting nut, is mounted on being located at undermost shaped steel steel column, position on each group of foundation bolt It is supported on the adjusting nut of one group of foundation bolt being correspondingly arranged in the column root-plate of undermost shaped steel steel column, in lowest level Shaped steel steel column column root-plate above and on each foundation bolt insert there are one backing plate and be threadedly coupled there are one fasten Nut and an anti-return nut, are connected with multilayer upper strata shaped steel steel column above and below on the capital of each shaped steel steel column, on Under last layer shaped steel steel column in adjacent two shaped steel steel columns be fixed with bolts on next stratotype steel steel column capital, Suspension column floor is fixed between the bottom of each shaped steel steel column and column root-plate, in the column cap of the shaped steel steel column described in each On be connected by screw bolts column cap sizing punching block, described in each column cap sizing punching block four walls on pacify in the horizontal direction Equipped with steel girder erection connector, steel girder or steel are sequentially installed between two adjacent steel girder erection connectors of same layer or so Secondary beam, concrete is perfused in undermost column root-plate bottom, and shaped steel steel column reinforcing bar is banded in whole shaped steel steel column surroundings And column mould is installed in shaped steel steel column reinforcing bar surrounding, shaped steel steel column concrete, each shaped steel steel have been poured in each column mould The error of column center line and base center line is not more than 3.0mm, and the top mark height and the setting high deviation of top mark of shaped steel steel column are not more than 2.0mm, the absolute altitude error of all backing plates is within 1.0mm.