CN212561550U - Draw and dig basis and expand bottom section supporting construction - Google Patents

Abstract

The utility model relates to an draw and dig basis and expand section supporting construction belongs to railway station construction field, including a plurality of supporting components that are used for supporting to the cavity roof, every supporting component all includes a plurality of girders that the interval set up, all is provided with the butt piece that is used for butt to cavity roof on a plurality of girders of every supporting component, every supporting component still including being used for driving the support piece that the butt piece supports tightly to the cavity roof, operating personnel sets up supporting component after digging out certain width when digging the cavity, and support piece can be with butt piece butt to the cavity roof on for the butt piece plays the effect of support to the cavity roof, draws again and digs one section this moment and sets up supporting component, prevents that the cavity roof from collapsing, thereby prevents to appear serious incident.

Description

Draw and dig basis and expand bottom section supporting construction

Technical Field

The application relates to the field of railway station construction, in particular to a supporting structure for an enlarged bottom section of a digging foundation.

Background

The contact net support spanning multiple tracks in the railway station yard mostly adopts a large-capacity soft spanning or hard spanning steel column, and most of the foundation adopts an expanded foundation. The distance between two lines in the station is generally smaller, and in the station expansion and transformation project, the phenomenon that a contact net support needs to be arranged between two lines inevitably occurs after a station track is increased. Under this kind of condition, contact net pillar foundation construction receives the place restriction, and the excavation working face is little, and conventional foundation ditch excavation mode can't adopt, and the foundation excavation adopts the form of drawing and digging mostly.

As shown in fig. 5, the existing extended foundation 2 includes a base body 21 and a column body 22 integrally formed with the base body 21, the cross-sectional area of the base body 21 is larger than that of the column body 22, when the base body 21 of the extended foundation 2 needs to be poured into the ground, a cavity 23 for accommodating the base body 21 needs to be dug in the ground, a digging opening 24 communicated with the cavity 23 is formed in the ground, the digging opening 24 is used for the column body 22 to pass through, the cross-sectional area of the cavity 23 is larger than that of the digging opening 24, and a constructor pours concrete into the cavity 23 to form the base body 21 of the extended foundation 2.

The related art described above has the following drawbacks: when the constructor digs the cavity 23, the top wall of the cavity 23 is collapsed due to the soft soil of the ground, so that serious safety accidents are caused.

Disclosure of Invention

In order to prevent when digging that the cavity roof collapses and causes the incident, this application provides a dig basis and expand bottom segment supporting construction.

The application provides a draw and dig basis and expand bottom section supporting construction adopts following technical scheme:

the utility model provides a draw and dig basis and expand end section supporting construction, includes a plurality of supporting component that are used for supporting to the cavity roof, every supporting component all includes a plurality of girders that the interval set up, all is provided with the butt piece that is used for butt to cavity roof on a plurality of girders of every supporting component, every supporting component still supports the support piece to tight to the cavity roof including being used for driving the butt piece.

Through adopting the above-mentioned technical scheme, operating personnel sets up supporting component after digging out certain width when digging the cavity, support piece can be with butt piece butt to cavity roof on, make the butt piece play the effect of supporting to the cavity roof, dig one section down and set up supporting component this moment again, prevent that the cavity roof from collapsing, thereby prevent serious incident from appearing, its simple structure of this supporting construction, the cost is cheap, convenient construction, can standardize batch production, the installation and operation of being convenient for, require lowly to workman's technical level, the preparation is swift, need not the maintenance, realized "prop promptly and dig", it is high to have the construction safety, construction speed is fast, advantages such as engineering cost is cheap, to saving the time limit for a project, it is showing the effect to improve work efficiency.

Preferably, the butt piece includes along the length direction setting of girder a plurality of connecting rods on a plurality of girders of every supporting component, and is adjacent be parallel to each other and the interval sets up between the connecting rod, all be provided with on a plurality of connecting rods of every supporting component be used for with the backup pad of cavity roof butt, be provided with on the connecting rod and be used for fixing the first mounting on the connecting rod with the backup pad.

By adopting the technical scheme, the supporting plate can support the top wall of the cavity, and the main beam and the connecting rods can support the supporting plate, so that the supporting effect of the supporting plate on the top wall of the cavity is improved; the first fixing piece can fix the supporting plate to the connecting rod, so that the supporting effect of the supporting plate on the top wall of the cavity is further improved.

Preferably, the binding holes are formed in the two sides, located on each connecting rod, of the supporting plate, each first fixing piece comprises a metal soft rod, the two ends of each metal soft rod penetrate through the binding holes in the two sides and are mutually screwed together, and the connecting rods are located in the metal soft rods.

Through adopting above-mentioned technical scheme, operating personnel passes through the soft pole of metal and fixes the backup pad to the connecting rod on, adopts manual mode can accomplish the fixed to the backup pad, and its fixed mode is convenient simple, has improved the efficiency of buildding of constructor buildding the backup pad to adopt its simple structure of setting up of the soft pole of metal, the cost is cheap.

Preferably, every the both ends of girder all are provided with the tie-beam, support piece is including the stand that is located the tie-beam below, on the one end butt joint of stand to the diapire of cavity, the other end is provided with and is used for fixing the second mounting to the stand with the tie-beam.

By adopting the technical scheme, the connecting beam is supported by the support columns, so that the main beam and the support plate are supported by the support columns, and an operator can complete the support of the support plate by arranging the support columns below the connecting beam, therefore, the support plate is simple in structure and convenient to construct; the second fixing piece can fix the connecting beam to the upright column, so that the separation between the support column and the connecting beam is prevented, and the supporting effect of the upright column on the supporting plate is further improved.

Preferably, the second mounting is including being located the inside inserted bar of stand, the inserted bar runs through and extends to the stand and sets up outward near the tip of tie beam, offer on the tie beam and be used for supplying the inserted jack of inserted bar.

Through adopting above-mentioned technical scheme, arrange the tie-beam below in with the stand for the stand drives the inserted bar and pegs graft to the jack in, thereby the completion is fixed the installation between tie-beam and the stand, and fixed mode is convenient simple, and fixed effect is better, has improved the efficiency of buildding when constructor builds the stand.

Preferably, each main beam comprises a plurality of spliced beams which are spliced with each other, and third fixing pieces used for fixing the adjacent spliced beams together are arranged on the adjacent spliced beams.

By adopting the technical scheme, the arrangement of the splicing beams can enable a constructor to excavate the same section for multiple times, and one section of the splicing beam is arranged for excavation once, so that the safety of the constructor during excavation is further improved, the phenomenon of collapse caused by overlarge excavation area is prevented, and the small area of the excavation opening is convenient for the operator to place the splicing beams in the cavity along the excavation opening; the third fixing piece is arranged, so that the splicing beams form a whole, and the supporting effect of the whole supporting plate on the top wall of the cavity is improved.

Preferably, the support plate comprises a plurality of splice plates located on opposing splice beams of the support assembly.

By adopting the technical scheme, the splicing plates are convenient for an operator to install and fix the splicing plates after installing one section of the splicing beam, so that each group of the splicing beams and the splicing plates can have a better supporting effect on one section of the dug cavity, and further prevent collapse phenomenon caused by overlarge digging area; and the splice plates are convenient to move into the cavity along the digging opening for installation and fixation.

Preferably, the third mounting is including being located the connecting plate between the adjacent concatenation roof beam on the same straight line, be provided with respectively on two faces that the connecting plate deviates from mutually and be used for the plug-in connection to the installation pole in the adjacent concatenation roof beam, the bolt is worn to be equipped with by the tip of concatenation roof beam and the position that is located the installation pole place, offer the through-hole that is used for supplying the bolt to pass on the installation pole, overlap on the bolt and establish and threaded connection have be used for with the nut of the outer wall butt of concatenation roof beam.

Through adopting above-mentioned technical scheme, adopt bolt and nut to have better fastness after can making adjacent concatenation roof beam fix to further improved the effect of strutting of concatenation roof beam drive backup pad to the cavity roof, and adopted its fixed mode of setting up of bolt and nut convenient simple.

Preferably, a temporary supporting piece for temporarily supporting the spliced beams is arranged below each spliced beam.

Through adopting above-mentioned technical scheme, when building to next section concatenation roof beam and splice plate, adopt interim support piece can play the effect of interim support to next section concatenation roof beam and splice plate to the convenience is fixed the stand after the fixed of supporting component's multistage concatenation roof beam and splice plate.

Preferably, the temporary support is a jack arranged on the bottom wall of the cavity, and the driving end of the jack is used for abutting against the splicing beam.

Through adopting above-mentioned technical scheme, the setting that adopts the jack is convenient for support the concatenation roof beam, and the occupation space of jack is less, makes things convenient for constructor to be located the less cavity of volume and operates.

In summary, the present application includes at least one of the following beneficial technical effects:

the upright post can support the connecting beam and the main beam, so that the connecting beam drives the supporting plates on the connecting rods to support the top wall of the cavity, and the top wall of the cavity is prevented from collapsing, thereby preventing serious safety accidents;

adopt setting up of concatenation roof beam and splice plate to make things convenient for operating personnel to draw in each section cavity in grades and dig to further improved constructor when drawing the security of digging, prevented to draw and dug the too big phenomenon that collapses that appears of area, and draw the area of digging the mouth less make things convenient for operating personnel to arrange in the cavity along drawing the mouth and will splice roof beam and splice plate.

Drawings

FIG. 1 is a schematic overall structure diagram of an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a support assembly according to an embodiment of the present application;

fig. 3 is a schematic diagram of an explosive structure for showing a binding hole and a metal soft rod according to an embodiment of the present application;

FIG. 4 is a schematic diagram of an exploded structure for showing a bolt, a nut and a through hole according to an embodiment of the present application;

fig. 5 is a schematic cross-sectional structure of the related art.

Description of reference numerals: 1. a main beam; 11. a connecting rod; 111. a support plate; 112. binding holes; 113. a metal soft rod; 12. a connecting beam; 121. a column; 122. inserting a rod; 123. a jack; 13. splicing the beams; 131. splicing plates; 132. a connecting plate; 133. mounting a rod; 134. a bolt; 135. a through hole; 136. a nut; 15. a jack; 2. expanding the foundation; 21. a base body; 22. a cylinder; 23. a cavity; 24. and digging the opening.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

As shown in fig. 1, the embodiment of the present application discloses a supporting structure for a bottom-expanding section of an excavation foundation. Referring to fig. 1, the excavation foundation bottom expanding section supporting structure includes a plurality of supporting assemblies for supporting to the top wall of the cavity 23, and in this embodiment, because the top wall of the cavity 23 includes four surfaces, the supporting assemblies are provided with four groups and are respectively located below each surface.

With reference to fig. 1 and 2, each support assembly includes a plurality of main beams 1 arranged at intervals, and each of the plurality of main beams 1 of each support assembly is provided with an abutting piece for abutting against the top wall of the cavity 23; in the present embodiment, each support assembly comprises three main beams 1.

With reference to fig. 2 and 3, the abutting member includes a plurality of connecting rods 11 disposed on the plurality of main beams 1 of each supporting component along the length direction of the main beam 1, the adjacent connecting rods 11 are disposed in parallel and at intervals, and a supporting plate 111 for abutting against the top wall of the cavity 23 is disposed on each of the plurality of connecting rods 11 of each supporting component.

With reference to fig. 2 and 3, in the present embodiment, the supporting plates 111 are made of wood plates, steel plates, or precast concrete plates, and the like, and the top wall of the cavity 23 can be supported by using the wood plates, the steel plates, or the precast concrete plates, and because each surface is fan-shaped, each supporting plate 111 is integrally fan-shaped, and the width of each fan-shaped supporting plate 111 is sequentially increased from the digging opening 24 toward the side wall of the cavity 23, so as to achieve the effect of overall supporting the top wall of the cavity 23; set up connecting rod 11 to ribbed steel bar, channel-section steel or minor diameter steel pipe all can, adopt the welded mode with the both ends of connecting rod 11 fixed to on the both sides girder 1.

Referring to fig. 2 and 3, in order to facilitate mounting and fixing the support plate 111 to the plurality of connecting rods 11, a first fixing member for fixing the support plate 111 to the connecting rods 11 is provided on the connecting rods 11.

With reference to fig. 2 and 3, the support plate 111 and the two sides of each connecting rod 11 are provided with a binding hole 112, the first fixing member includes a metal soft rod 113, two ends of the metal soft rod 113 penetrate through the binding holes 112 on the two sides and are screwed together, and the connecting rod 11 is located in the metal soft rod 113.

In the present embodiment, the soft metal rod 113 is made of iron wire, and in other embodiments, the soft metal rod 113 may be made of rope or other metal material, which may also complete the installation and fixation between the supporting plate 111 and the plurality of connecting rods 11.

When needs are fixed backup pad 111 to a plurality of connecting rods 11 on, be located the ligature hole 112 that passes connecting rod 11 both sides on the face that backup pad 111 deviates from connecting rod 11 with the both ends of metal soft rod 113, walk around connecting rod 11 with metal soft rod 113 this moment, with the both ends of metal soft rod 113 each other the twist to close together to the completion is fixed the installation between backup pad 111 and a plurality of connecting rods 11, and fixed mode is convenient simple.

In other embodiments, the first fixing member may be replaced by a bolt and a nut, the bolt is simultaneously inserted into the support plate 111 and the connecting rod 11, and the nut is screwed onto the bolt, so that the support plate 111 and the connecting rods 11 may be installed and fixed together.

With reference to fig. 2 and 3, in order to support the main beam 1, so that the main beam 1 drives the supporting plate 111 to support the top wall of the cavity 23, each supporting component further includes a supporting member for driving the abutting member to abut against the top wall of the cavity 23.

Referring to fig. 2 and 3, the two ends of each main beam 1 are provided with connecting beams 12, and the support member includes a column 121 located below the connecting beams 12.

With reference to fig. 2 and 3, in order to facilitate the fixing of the beam to the end of the upright 121, one end of the upright 121 is abutted against the bottom wall of the cavity 23, and the other end is provided with a second fixing element for fixing the connecting beam 12 to the upright 121.

With reference to fig. 2 and 3, the second fixing member includes an insertion rod 122 located inside the upright 121, the end portion of the insertion rod 122 close to the connecting beam 12 penetrates and extends to the outside of the upright 121, and an insertion hole 123 for inserting the insertion rod 122 is opened on the connecting beam 12.

In this embodiment, the upright 121 is made of brick masonry or precast concrete pier, and the insert rod 122 is configured as a steel bar embedded in the upright 121.

When needs are fixed tie-beam 12 to the tip of stand 121, move stand 121 drive inserted bar 122 towards tie-beam 12 below for stand 121 drives inserted bar 122 and pegs graft to in the jack 123, thereby accomplish the installation of stand 121 and fix, stand 121 can play the effect of support to tie-beam 12 and girder 1 this moment, makes girder 1 drive backup pad 111 on a plurality of connecting rods 11 and play the effect of support to cavity 23 roof.

In other embodiments, bolts may be used to fix the connecting beam 12 and the upright 121, and the bolts are simultaneously inserted into the connecting beam 12 and the upright 121, so that the bolts complete the mutual fixation between the connecting beam 12 and the upright 121, or positioning pins are simultaneously inserted into the connecting beam 12 and the upright 121, and the fixing of the connecting beam 12 and the upright 121 may also be completed.

With reference to fig. 2 and 3, in order to further facilitate the construction of each support assembly, each main beam 1 includes a plurality of spliced beams 13 spliced with each other, and the support plate 111 includes a plurality of splice plates 131 located on the spliced beams 13 opposite to the support assemblies.

Splice roof beam 13 and splice plate 131 set up and can make constructor draw and dig many times to same section, draw and dig once and set up one section splice roof beam 13 and splice plate 131, further improved constructor's security when drawing and digging, prevented to draw and dig the too big phenomenon that collapses of appearance of area.

Referring to fig. 3 and 4, in order to fix the adjacent spliced beams 13 together and thus improve the supporting effect of the supporting plate 111 on the top wall of the cavity 23, a third fixing member for fixing the adjacent spliced beams 13 together is disposed on the adjacent spliced beams 13.

With reference to fig. 3 and 4, the third fixing member includes a connecting plate 132 located between adjacent splicing beams 13 on the same straight line, two faces of the connecting plate 132 that face away from each other are respectively provided with a mounting rod 133 for being inserted into the adjacent splicing beams 13, a bolt 134 is penetrated and arranged at a position where the mounting rod 133 is located at an end of each splicing beam 13, a through hole 135 for the bolt 134 to pass through is formed in the mounting rod 133, and the bolt 134 is sleeved and threadedly connected with a nut 136 for abutting against an outer wall of the splicing beam 13.

When the adjacent splicing beams 13 need to be fixed, the connecting plate 132 drives the mounting rod 133 on one side to be inserted into the splicing beam 13 on one side, the next splicing beam 13 is driven to move towards the mounting rod 133 on the other side of the connecting plate 132 at the moment, the mounting rod 133 on the other side of the connecting plate 132 is inserted into the next splicing beam 13, the bolt 134 penetrates into the splicing beam 13, the nut 136 is screwed on the bolt 134, and the bolt 134 and the nut 136 complete the installation and fixation between the mounting rod 133 and the splicing beam 13.

In other embodiments, the third fixing member may be replaced by a U-shaped steel bar, and both ends of the U-shaped steel bar are respectively penetrated through the two side splicing beams 13, so that both ends of the U-shaped steel bar respectively penetrate through the through holes 135 in the two side splicing beams 13, and the installation and fixation between the installation rod 133 and the splicing beams 13 can also be completed.

In other embodiments, when the cavity 23 has a larger volume, in order to make the supporting assembly have a better supporting effect, a transverse supporting rod (not shown in the drawings) may be disposed between the upright posts 121 at both ends of each main beam 1, and both ends of the supporting rod are respectively fixedly connected to the upright posts 121 at both sides.

In other embodiments, the upright 121 may be disposed under each splicing beam 13, so that the upright 121 supports each splicing beam 13, thereby further improving the supporting effect on the supporting plate 111.

With reference to fig. 1 and 2, in order to facilitate the installation and fixation of the adjacent spliced beams 13 by an operator, a temporary support member for temporarily supporting the spliced beams 13 is disposed below each spliced beam 13.

With reference to fig. 1 and 2, the temporary support is a jack 15 disposed on the bottom wall of the cavity 23, and the driving end of the jack 15 is used for abutting against the spliced beam 13; in other embodiments, the jack 15 may be replaced by an adjustable scaffold brace, and the arrangement of the adjustable scaffold brace may also have a temporary support effect.

The implementation principle of the excavation foundation bottom expanding section supporting structure is as follows: when the extended foundation 2 needs to be poured, firstly, an excavation port 24 is formed in the ground, and the cavity 23 begins to be excavated through the excavation port 24, when actual excavation is performed, only a group of supporting components are arranged after excavation with a certain width, the splicing plates 131 are fixed to the connecting rods 11 through the metal soft rods 113, the splicing plates 131 are driven to abut against the top wall of the cavity 23, at the moment, the splicing beams 13 are temporarily supported through the jacks 15, the adjacent splicing beams 13 drive the splicing plates 131 to move towards the splicing beams 13 and the splicing plates 131 which are already erected, the adjacent splicing beams 13 are installed and fixed through the connecting plates 132, the installing rods 133, the bolts 134 and the nuts 136, the fixing of the splicing beams 13 is completed, the splicing plates 131 abut against the top wall of the cavity 23, at the moment, the upright columns 121 drive the inserting rods 122 to move towards the connecting beams 12, the inserting rods 122 are inserted into the insertion holes 123 of the connecting beams 12, and the installing and fixing of the upright columns 121 is completed, the jack 15 is taken off after the installation is finished, the mode of "prop promptly and dig promptly" is adopted to repeat above steps and is built in proper order of a plurality of supporting components of whole cavity 23 roof, need not to take out supporting component and directly form extension basis 2 to pouring concrete in the cavity 23 after accomplishing supporting structure's building, the supporting structure of this application, prevent that cavity 23 roof from collapsing, thereby prevent serious incident from appearing, and its simple structure, the cost is cheap, convenient construction, standardized batch production, be convenient for install the operation, require lowly to workman technical level, the preparation is swift, need not the maintenance, realized "prop promptly and dig promptly", construction safety is high, construction speed is fast, advantages such as engineering cost is cheap, to saving the time limit for a project, improvement work efficiency has apparent effect.

Claims (10)

1. The utility model provides a draw and dig basis and expand bottom segment supporting construction which characterized in that: including a plurality of supporting components that are used for supporting to on cavity (23) roof, every supporting component all includes a plurality of girder (1) that the interval set up, all is provided with the butt piece that is used for butt to on cavity (23) roof on a plurality of girder (1) of every supporting component, every supporting component still including being used for driving the butt piece and support piece to tight on cavity (23) roof.

2. The excavation foundation bottom-enlarging section supporting structure according to claim 1, wherein: the butt piece includes along a plurality of connecting rods (11) of the length direction setting of girder (1) on a plurality of girders of every supporting component (1), and is adjacent be parallel to each other and the interval sets up between connecting rod (11), all be provided with on a plurality of connecting rod (11) of every supporting component be used for with backup pad (111) of cavity (23) roof butt, be provided with on connecting rod (11) and be used for fixing backup pad (111) to the first mounting on connecting rod (11).

3. The excavation foundation bottom-enlarging section supporting structure according to claim 2, wherein: the utility model discloses a binding hole, including backup pad (111), first mounting, both sides that just are located every connecting rod (11) are all seted up in backup pad (111), first mounting includes soft pole (113) of metal, the both ends of soft pole (113) of metal are passed both sides binding hole (112) and are twisted each other to be in the same place, connecting rod (11) are located soft pole (113) of metal.

4. The excavation foundation bottom-enlarging section supporting structure according to claim 1, wherein: every the both ends of girder (1) all are provided with tie-beam (12), support piece is including stand (121) that are located tie-beam (12) below, the one end butt joint of stand (121) is to the diapire of cavity (23), and the other end is provided with and is used for fixing the second mounting on stand (121) with tie-beam (12).

5. The excavation foundation bottom-enlarging section supporting structure according to claim 4, wherein: the second fixing piece is including lieing in inserted bar (122) of stand (121) inside, the tip that inserted bar (122) are close to tie-beam (12) runs through and extends to stand (121) and sets up outward, offer on tie-beam (12) and be used for supplying inserted bar (122) male jack (123).

6. The excavation foundation bottom-enlarging section supporting structure according to claim 2, wherein: each main beam (1) comprises a plurality of splicing beams (13) which are spliced with each other, and third fixing pieces used for fixing the adjacent splicing beams (13) together are arranged on the adjacent splicing beams (13).

7. The excavation foundation bottom-enlarging section supporting structure according to claim 6, wherein: the third fixing piece comprises a connecting plate (132) located between adjacent splicing beams (13) on the same straight line, two faces, away from each other, of the connecting plate (132) are respectively provided with an installation rod (133) used for being inserted into the adjacent splicing beams (13), bolts (134) are arranged on the end portions of the splicing beams (13) and the positions, where the installation rods (133) are located, in a penetrating mode, through holes (135) used for allowing the bolts (134) to penetrate are formed in the installation rods (133), and nuts (136) used for being abutted to the outer walls of the splicing beams (13) are sleeved on the bolts (134) in a threaded connection mode.

8. The excavated foundation enlarged bottom section support structure according to claim 7, wherein: the support plate (111) comprises a plurality of splice plates (131) located on opposite splice beams (13) of the support assembly.

9. The excavation foundation bottom-enlarging section supporting structure according to claim 6, wherein: temporary supporting pieces used for temporarily supporting the splicing beams (13) are arranged below each splicing beam (13).

10. The excavated foundation enlarged bottom section support structure according to claim 9, wherein: the temporary support is provided with a jack (15) arranged on the bottom wall of the cavity (23), and the driving end of the jack (15) is used for abutting against the splicing beam (13).

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