CN111502004B

CN111502004B - Special-shaped large-span suspension stiffness structure and construction method thereof

Info

Publication number: CN111502004B
Application number: CN202010327967.6A
Authority: CN
Inventors: 汪小林; 张铭; 周晓莉; 马晓辉; 赵宇超; 张英楠; 陈瑞; 周红兵
Original assignee: Shanghai Construction No 4 Group Co Ltd
Current assignee: Shanghai Construction No 4 Group Co Ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2021-09-28
Anticipated expiration: 2040-04-23
Also published as: CN111502004A

Abstract

The invention relates to the technical field of building engineering, and particularly discloses a special-shaped large-span suspension stiffness structure which comprises a core barrel, a roof truss and a plurality of layers of suspension structures, wherein the roof truss is arranged at the top of the core barrel, each suspension structure comprises a first horizontal beam, a second horizontal beam, a connector and a suspender, one end of each first horizontal beam is arranged on the core barrel, each second horizontal beam is vertical to and fixedly connected with each first horizontal beam, each connector is obliquely inserted into each first horizontal beam, the two ends of each connector are connected with the suspenders, and the upper end of the suspender of the uppermost layer of the suspension structure is connected with the roof truss; the outer sleeve of jib is equipped with temporary support layer, the both ends of temporary support layer respectively with two adjacent connector fixed connection. The invention aims to solve the problem that the stress of a suspension rod of a special-shaped suspension structure is not easy to control.

Description

Special-shaped large-span suspension stiffness structure and construction method thereof

Technical Field

The invention relates to the technical field of building construction, and particularly discloses a special-shaped large-span suspension stiffness structure and a construction method thereof.

Background

With the increasing demand for large spaces or open spaces for the bottom and the demand for aesthetic appearance of buildings, a new architectural structural system, a suspended structural system, is widely used. Conventional suspension structures include core tube structures, roof truss structures, hanger rods, floor slabs, and the like. The core tube structure is of a reinforced concrete structure, the roof truss structure is of a long-span steel structure, and a stiff horizontal steel beam is arranged in the overhanging concrete floor; each floor slab is connected with a lower floor slab and an upper roof truss through a suspender, and the truss layer converts the vertical load into a core barrel structure; each floor slab is connected with the core tube structure through an internal horizontal steel beam. Therefore, compared with the traditional building structure, the suspended building structure has the advantages that partial floors and vertical structures are suspended in the air except for the vertical bearing structure which falls on the ground, and the structure is more complex and variable.

Traditional suspended structure work progress needs fully to consider suspended structure atress characteristics and construction convenience, can adopt from the supreme suspended structure of constructing down usually, perhaps constructs from top to bottom. The main process of constructing the suspension structure from bottom to top comprises the steps of arranging a temporary support structure, constructing a horizontal structure layer by layer from bottom to top, installing a suspender, constructing a roof truss layer, and then removing the temporary support layer by layer for unloading to finish structural construction; the main process of the up-down construction suspended structure comprises the steps of constructing a roof truss layer firstly, setting a temporary inclined strut, constructing a horizontal structure layer by layer from top to bottom, installing a suspender, and then dismantling the temporary strut layer by layer to unload, thereby completing the structural construction. In both of the aforementioned construction methods, there are some disadvantages: 1) a large number of temporary supports or inclined struts are adopted, the construction process is complex and high in consumption, and meanwhile, the temporary supports and the inclined struts occupy more construction space, so that construction is inconvenient; 2) the design state of the suspender is tension force, when the temporary supporting structure is installed or unloaded, the stress of the suspension structure is complex, especially the stress of the suspender can be in a compression state which is inconsistent with the design, and the suspender can be damaged or even broken; 3) after the temporary support is unloaded, the layer height between each layer of horizontal structure connected through the suspender can not be adjusted, and the layer height is difficult to accurately control.

Disclosure of Invention

The invention aims to provide a special-shaped large-span suspension stiff structure and a construction method thereof, and aims to solve the problem that the stress of a suspender in the construction process of a special-shaped suspension structure is difficult to control.

In order to achieve the purpose, the basic scheme of the invention is as follows:

a special-shaped large-span suspension stiffness structure comprises a core barrel, a roof truss and a plurality of layers of suspension structures, wherein the roof truss is installed at the top of the core barrel, each suspension structure comprises a first horizontal beam, a second horizontal beam, a connector and a suspender, one end of the first horizontal beam is installed on the core barrel, the second horizontal beam is perpendicular to the first horizontal beam and is fixedly connected with the first horizontal beam, the connector is obliquely inserted into the first horizontal beam, the two ends of the connector are connected with the suspenders, and the upper end of the suspender of the suspension structure at the uppermost layer is connected with the roof truss; the outer sleeve of jib is equipped with temporary support layer, the both ends of temporary support layer respectively with two adjacent connector fixed connection.

Optionally, the connector is rotatably connected to the boom.

Optionally, the both ends of connector are formed with the first connector of semicircle column, the both ends of jib are formed with the second connector of semicircle column, and the middle part of second connector is formed with the rotation groove that is used for holding first connector, be equipped with the shaft hole of alignment on first connector and the second connector, coaxial insertion has the axis of rotation in the shaft hole, axis of rotation and second connector fixed connection.

Optionally, a connecting seat is fixedly arranged on the first connecting head; the temporary support layer comprises third connectors at two ends and a support unit in the middle, connecting rods are integrally formed on the outer sides of the third connectors along the radial direction, and the connecting rods are connected with the connecting seats; the supporting unit comprises two opposite supporting parts, insertion blocks in a shape like a Chinese character 'shan' are integrally formed at two ends of each supporting part, and insertion grooves matched with the insertion blocks are formed in the third connecting heads.

Optionally, the support portion includes support seats at two ends, the support seats are semi-annular, a plurality of support frames are radially arranged between the two support seats, each support frame includes two transverse connecting rods and two vertical connecting rods, the two vertical connecting rods are arranged between the two transverse connecting rods, a fixing rod is arranged on each transverse connecting rod, and each fixing rod is connected with the support seat; the closer the circle center of the supporting seat is in the supporting frames, the closer the middle part of the supporting seat is to the vertical connecting rod.

Optionally, the transverse connecting rod is provided with a plurality of inclined rods, and the inclined rods are connected with the fixed rod.

Optionally, in the support frame closest to the center of the supporting seat, the vertical connecting rod of the support frame comprises an upper rod part, a middle rod part and a lower rod part, the middle rod part is in a hollow cylindrical shape and is sleeved at the end parts of the upper rod part and the lower rod part, a transverse plate is arranged inside the middle rod part, springs are arranged on two sides of the transverse plate, and the springs are connected with the adjacent upper rod part or the lower rod part.

A construction method of a special-shaped large-span suspension stiffened structure comprises the following steps:

s1, constructing the core barrel in advance;

s2, constructing and building a roof truss on the top of the core barrel;

s3, constructing a suspender at the topmost layer, a first horizontal beam and a second horizontal beam, wherein the first horizontal beam is fixed on the core barrel, the second horizontal beam is vertically welded with the first horizontal beam, meanwhile, a connector is inserted into the first horizontal beam, an insertion rod is inserted into the first insertion hole and the second insertion hole, and a push plate is pushed inwards to fix the connector in the first horizontal beam; when the suspender and the temporary supporting layer are installed, the suspender is rotatably arranged on the connector, then the supporting seat is clamped into the third connector, and the inserting block is fixed on the third connector by adopting a bolt;

s4, constructing a suspender, a first horizontal beam and a second horizontal beam downwards in sequence, and installing the suspender and a temporary supporting layer;

s5, unloading the lowest temporary supporting layer, cutting the fixed rods on the outermost side, then cutting the fixed rods close to the inner side, finally cutting the fixed rods on the center, and then screwing down the bolts to take out the supporting seat when the temporary supporting layer is dismounted;

s6, adjusting the length of the suspender by rotating the connecting column, and adjusting the angle of the suspender by rotating the suspender to realize the adjustment of the vertical elevation of each layer of the suspension structure;

s7, unloading the temporary supporting layers upwards in sequence and adjusting the vertical elevation of the suspension structure;

s8, adjusting the hanging rods of each layer of hanging structure again to make the internal force of each layer of hanging rods accord with the design range;

s9, fixing the push plate on the first horizontal beam in a welding mode, and fixing the rotary connection position of the hanger rod and the connector.

The working principle and the beneficial effects of the scheme are as follows:

1. adopt in this scheme to adhere to the interim supporting layer of jib outside and replace the interim bracing piece that sets up alone among the prior art, need not additionally set up the support that is used for being connected with interim bracing piece on core section of thick bamboo and the first horizontal beam, the cost is lower relatively speaking. Simultaneously, the temporary support layer is for interim bracing piece, practices thrift space, occupation of land more, provides more convenient construction environment for the construction.

2. When uninstallation temporary support layer, need cut off the dead lever on the supporting seat, the cross-sectional area of dead lever is little, for the support of being connected with temporary support pole, cuts off more swiftly convenient, the security is also higher.

3. The effect of the temporary support layer in this scheme is to support first horizontal beam and second horizontal beam in the work progress, and because the temporary support layer is attached to the jib outside, it is in concentric coaxial state basically with the jib, so the stress state that temporary support layer and jib are in is the same, can reduce the atress of jib when the construction like this, protects the jib, avoids its damage.

4. When the temporary support layer is unloaded in the scheme, the temporary support layer is unloaded at least gradually from the bottom, so that after the temporary support layer at the lowest part is unloaded, the suspender at the lowest part is only pulled by the first horizontal beam and the second horizontal beam at the lowest part, and the suspender is stressed less at the moment and can be prevented from being damaged due to instantaneous stress. Simultaneously, when cutting off the dead lever, outside-in cuts off gradually, cuts off behind the dead lever, and horizontal connecting rod and vertical connecting rod on this dead lever then break away from whole temporary support layer, and temporary support layer atress diminishes this moment, the jib atress increases, cuts off all the other dead levers again after, the jib atress increases again, so the gradual atress of jib to adapt to the design condition, avoid its instantaneous atress too big and damage. Meanwhile, the vertical connecting rod on the last fixing rod comprises a spring which can play a role in vibration reduction, and when the penultimate fixing rod is cut off, the spring can absorb the vibration of the first horizontal beam and the second horizontal beam, so that the first horizontal beam and the second horizontal beam are prevented from shaking to a larger extent.

5. In this scheme, the temporary support layer is attached to the jib outside, and both combine to form a new jib system, and the difference lies in with current jib system: the existing suspender system only has a supporting function in a use state, and needs to be provided with temporary support in a construction state. The novel suspender system can protect the suspender from being damaged, simplifies the construction method steps of the prior art, reduces the raw material and labor cost of the temporary supporting part and improves the construction efficiency.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a schematic structural view of a junction of a first horizontal beam and a second horizontal beam;

FIG. 3 is a schematic structural view of the hanger bar, the first horizontal beam, the second horizontal beam, the connector and the temporary support layer;

FIG. 4 is a schematic view of the connection between the temporary support layer and the connector;

FIG. 5 is a schematic view of the structure of the hanger bar and the connector;

FIG. 6 is a schematic view of the structure of the mounting sleeve and the suspension rod;

fig. 7 is a schematic structural view of a vertical link at the center of the support seat.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the roof truss comprises a core barrel 1, a roof truss 2, a suspension structure 3, a first horizontal beam 4, a second horizontal beam 5, a connector 6, a first connector 7, a shaft hole 8, a connecting seat 9, a connecting rod 10, a third connector 11, an insert block 12, a supporting seat 13, a fixing rod 14, an inclined rod 15, a transverse connecting rod 16, a vertical connecting rod 17, a middle rod part 18, a hanging rod 19, a fixing sleeve 20, a rotating shaft 21, a welding port 22, a welding block 23, a connecting groove 24, a push plate 25, an insert rod 26, a first insertion hole 27, a second insertion hole 28, an upper rod part 29, a lower dry part 30, a transverse plate 31, a spring 32, a fourth connector 33, a connecting rod 34, a fixing insert rod 35, a second fixing hole 36 and a first fixing hole 37.

The embodiment is basically as shown in fig. 1 and fig. 2:

a special-shaped large-span suspension stiffness structure comprises a core cylinder 1, a roof truss 2 and a plurality of layers of suspension structures 3. The roof truss 2 is fixedly arranged on the top of the core barrel 1. The suspension structure 3 comprises a first horizontal beam 4, a second horizontal beam 5, a connector 6 and a suspender 19, one end of the first horizontal beam 4 is fixedly arranged on the core barrel 1, and the other end of the first horizontal beam 4 is vertically and obliquely provided with a connecting groove 24 in a penetrating manner. The outside end level of first horizontal beam 4 is equipped with a plurality of first jacks 27, and first jack 27 level passes connecting groove 24, and sliding contact is equipped with inserted bar 26 in the first jack 27, and the outside end of a plurality of inserted bars 26 all is fixed on push pedal 25. The connector 6 is horizontally provided with a second insertion hole 28 at the middle, when the connector 6 is inserted into the connecting groove 24, the second insertion hole 28 is aligned with the first insertion hole 27, then the insertion rod 26 is inserted into the first insertion hole 27 and the second insertion hole 28, and the push plate 25 is welded with the first horizontal beam 4. The two sides of the outer side end of the first horizontal beam 4 are provided with concave welding openings 22, the end of the second horizontal beam 5 is integrally formed with a first welding block 23 matched with the welding openings 22, and the first welding block 23 is welded in the welding openings 22.

Referring to fig. 3, the connectors 6 are connected at both ends with suspension bars 19, wherein the upper ends of the suspension bars 19 of the uppermost suspension structure 3 are connected with the roof truss 2. The both ends of connector 6 are formed with semi-cylindrical first connector 7, and the both ends of jib 19 are formed with semi-cylindrical second connector, and the middle part of second connector is formed with the rotation groove that is used for holding first connector 7, is equipped with the shaft hole 8 of alignment on first connector 7 and the second connector, and coaxial insertion has the axis of rotation in the shaft hole 8, axis of rotation and second connector fixed connection. After the angle between the suspension rod 19 and the connector 6 is adjusted, the rotation shaft 21 is welded to the first connector 7.

Referring to fig. 5 and 6, the suspension rod 19 includes two fourth connectors 33, a connecting column 34 and the fixing sleeve 20. The two ends of the connecting column 34 are respectively in threaded connection with one ends of the two connecting heads far away from the connector 6, and the farthest moving distance of the fourth connecting head 33 on the connecting column 34 is 1.5 cm. The connecting post 34 is provided with a first fixing hole 37, and the fourth connector 33 is provided with a second fixing hole 36. The fixed sleeve 20 is in an incomplete ring shape, a plurality of fixed insertion rods 35 capable of being inserted into the first fixing holes 37 and the second fixing holes 36 are fixedly arranged on the inner side wall of the fixed sleeve 20, and the fixed sleeve 20 can be fixedly arranged on the connecting column 34 and the fourth connector 33.

Referring to fig. 4 and 7, a temporary support layer is sleeved outside the suspension rod 19, and two ends of the temporary support layer are respectively fixedly connected with two adjacent connectors 6. The first connector 7 is fixedly provided with a round connecting seat 9. The temporary support layer comprises third connectors 11 at two ends and a support unit in the middle, a plurality of connecting rods 10 are integrally formed on the outer side of each third connector 11 along the radial direction, and the connecting rods 10 are connected with the connecting seats 9. The supporting unit comprises two opposite supporting parts, the two ends of each supporting part are integrally formed with a chevron-shaped inserting block 12, and a slot matched with the inserting block 12 is formed in the third connector 11. The supporting part comprises supporting seats 13 at two ends, the supporting seats 13 are semi-annular, a plurality of supporting frames are fixedly arranged between the two supporting seats 13 along the radial direction, each supporting frame comprises two transverse connecting rods 16 and two vertical connecting rods 17, the two vertical connecting rods 17 are fixedly arranged between the two transverse connecting rods 16, fixing rods 14 are fixedly arranged on the transverse connecting rods 16, and the fixing rods 14 are fixedly connected with the supporting seats 13; the closer the circle center of the supporting seat 13 among the supporting frames, the closer the middle part of the supporting seat 13 is to the vertical connecting rod 17 thereon. The transverse connecting rod 16 is fixedly provided with a plurality of inclined rods 15, and the inclined rods 15 are fixedly connected with the fixed rod 14. In the support frame closest to the center of the supporting seat 13, the vertical connecting rod 17 comprises an upper rod part 29, a middle rod part 18 and a lower rod part, the middle rod part 18 is in a hollow cylinder shape and is sleeved at the end parts of the upper rod part 29 and the lower rod part, a transverse plate 31 is arranged inside the middle rod part 18, springs 32 are arranged on two sides of the transverse plate 31, and the springs 32 are connected with the adjacent upper rod part 29 or the lower rod part.

s1, constructing the core barrel in advance;

s2, constructing and building a roof truss on the top of the core barrel;

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.

Claims

1. The utility model provides a special-shaped hangs strength nature structure greatly strides, includes a core section of thick bamboo, roofing truss and a plurality of layers of suspended structure, the roofing truss is installed at a core section of thick bamboo top, its characterized in that: the suspension structure comprises a first horizontal beam, a second horizontal beam, a connector and a suspender, wherein one end of the first horizontal beam is arranged on the core barrel, the second horizontal beam is perpendicular to and fixedly connected with the first horizontal beam, the connector is obliquely inserted into the first horizontal beam, the suspender is connected to both ends of the connector, and the upper end of the suspender of the suspension structure on the uppermost layer is connected with the roof truss; a temporary supporting layer is sleeved outside the hanging rod, and two ends of the temporary supporting layer are respectively and fixedly connected with two adjacent connectors;

the connector is rotatably connected with the suspender, a semi-cylindrical first connector is formed at two ends of the connector, a semi-cylindrical second connector is formed at two ends of the suspender, a rotating groove for accommodating the first connector is formed in the middle of the second connector, aligned shaft holes are formed in the first connector and the second connector, a rotating shaft is coaxially inserted into the shaft holes, the rotating shaft is fixedly connected with the second connector, and a connecting seat is fixedly arranged on the first connector;

the temporary support layer comprises third connectors at two ends and a support unit in the middle, connecting rods are integrally formed on the outer sides of the third connectors along the radial direction, and the connecting rods are connected with the connecting seats; the supporting unit comprises two opposite supporting parts, insertion blocks in a shape of Chinese character 'shan' are integrally formed at two ends of each supporting part, slots matched with the insertion blocks are formed in the third connecting head, each supporting part comprises supporting seats at two ends, each supporting seat is in a semi-annular shape, a plurality of supporting frames are arranged between the two supporting seats in the radial direction and comprise two transverse connecting rods and two vertical connecting rods, the two vertical connecting rods are arranged between the two transverse connecting rods, fixing rods are arranged on the transverse connecting rods, and the fixing rods are connected with the supporting seats; the closer the circle center of the supporting seat is in the supporting frames, the closer the middle part of the supporting seat is to the vertical connecting rod.

2. The special-shaped large-span suspension stiffness structure as claimed in claim 1, wherein: the transverse connecting rod is provided with a plurality of inclined rods, and the inclined rods are connected with the fixed rods.

3. A profiled large span suspension stiff structure according to claim 2, characterized in that: in the support frame that is closest to supporting seat centre of a circle department, its vertical connecting rod includes upper boom portion, well pole portion and lower pole portion, well pole portion is the cavity tube-shape and the cover is established at the tip of upper boom portion and lower pole portion, and the inside of well pole portion is equipped with the diaphragm, and the both sides of diaphragm are equipped with the spring, and the spring is connected with adjacent upper boom portion or lower pole portion.

4. The construction method of the special-shaped large-span suspension stiff structure according to claim 3, characterized by comprising the following steps:

s1, constructing the core barrel in advance;

s2, constructing and building a roof truss on the top of the core barrel;