CN205776252U - A kind of deep foundation pit supporting structure using steel pipe prop - Google Patents

A kind of deep foundation pit supporting structure using steel pipe prop Download PDF

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Publication number
CN205776252U
CN205776252U CN201620520202.3U CN201620520202U CN205776252U CN 205776252 U CN205776252 U CN 205776252U CN 201620520202 U CN201620520202 U CN 201620520202U CN 205776252 U CN205776252 U CN 205776252U
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China
Prior art keywords
steel pipe
pipe post
post
reinforcing rod
riser
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CN201620520202.3U
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Chinese (zh)
Inventor
王永伟
黄国发
林蓼
蒋晔
宋黎力
王禹
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China Railway Siyuan Survey and Design Group Co Ltd
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China Railway Siyuan Survey and Design Group Co Ltd
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Abstract

This utility model relates to bracing of deep foundation pit construction applications, in particular to a kind of deep foundation pit supporting structure using steel pipe prop.Including steel pipe post be fixed on outside steel pipe post centered by its axis the support beam of distribution in divergent shape, steel pipe post upper end passes support beam, steel pipe post outer wall is provided with upper backup pad and lower supporting plate along the axis direction spacer sleeve of steel pipe post, upper backup pad and lower supporting plate are welded on the outside of steel pipe post, being welded with many first reinforcing rods on the upper and lower end face of upper backup pad and lower supporting plate, the first reinforcing rod extend in the support beam by steel pipe post supporting;The node concrete post connected as one with support beam is poured in upper and lower gripper shoe.This utility model simple in construction, easy to operate, node structure intensity is high, it is possible in effective transmission axial compressive force to steel pipe post, is effectively guaranteed the unimpeded of foundation pit construction and road traffic, has great promotional value.

Description

A kind of deep foundation pit supporting structure using steel pipe prop
Technical field
This utility model relates to bracing of deep foundation pit construction applications, uses steel in particular to one The deep foundation pit supporting structure of pipe prop.
Background technology
When building ultra-deep subway station (or other municipal administration underground engineerings) in bustling business district, by In by foundation depth, subsoil water and Building Settlement around Foundation, more than road, 2 roads even 2 Concrete support, be also possible to simultaneously by traffic above-ground restriction and use half lid excavation construction (i.e. base The half of oprn-work in hole, another side sets up temporary pavement for urban transportation vehicle pass-through, now by On temporary pavement, load is big, and interim column (road deck support column of holding concurrently) is frequently with bearing capacity more Greatly, globality and the more preferable steel pipe post of stability.
But steel pipe post is complicated with the design of concrete component crossover node, constructional difficulties, especially Cross point node between steel pipe and concrete support beam, continuous beam is more complicated.Use twice The foundation ditch of above concrete support, the supporting construction being in top layer is positioned at the top of steel pipe post, Support beam is the most through and is not affected by column, load on temporary pavement and to support deadweight etc. perpendicular Also being easy to active force be delivered on steel pipe post, such node structure is extremely simple, peace Fill the most very convenient.But for the node structure of next layer, owing to supporting construction can only be with steel pipe The sidewall of column connects, and axial force of the supports can only be transmitted by the node structure on steel pipe post sidewall Axial force, in existing construction, the axial force of the supports of lower level node transmission is very big, up to hundreds of Ton is to upper kiloton, and the biggest axle power is delivered on steel pipe post by crossover node, mixes simultaneously The deadweight of solidifying soil support itself is relatively big, and construction error causes load etc. in addition, so may result in Steel pipe post becomes complicated, once with the crossed node stress of concrete support beam, longitudinal coupling beam Designing unreasonable being easy for causes node fracture to collapse.On the other hand the steel bar stress that concrete supports is joined Put more, if directly on steel pipe post, perforate installation reinforcing bar is easy for causing steel pipe post to tie Structure bad stability.Intersecting between steel pipe post and multiple concrete support beam and steel pipe post Joint structure complexity inconvenience is constructed.
Such as Patent No. " CN104499490A " entitled, " a kind of large-span steel supports multidirectional Connector and large-span deep foundation pit construction method for supporting " Chinese invention patent describe a kind of steel Column supporting construction, this structure includes steel column, and steel column is cased with the steel bushing of annular, steel bushing On offer multiple screw, steel column is provided with correspondence Screw hole structure, by bolt by steel Set is fixed on steel column, and steel bushing is provided with the bracing members in divergent shape of multiple directions, logical Cross this supporting construction and form supporting construction.It practice, this patent of invention needs at steel column Upper boring forms the Screw hole structure being connected with steel bushing, the inapplicable wall thickness of the most this connecting structure Relatively small steel pipe post, so can weaken the structural strength of column, when the axial force being subject to Time the biggest, being likely to result in the damage of steel column, this patent is not suitable for column with multiple yet simultaneously The connection of reinforced concrete support component;Additionally use bolt or screw-rod structure stationary steel bushing and Steel column is not the most stable, and during actual application, bolt may be deformed by axial compressive force Security incident occurs.If concrete support beam to be made, only use bracing members as coagulation Soil reinforcing rod is also difficult to reach stable effect.
Summary of the invention
The purpose of this utility model seeks to the prior art solving to mention in above-mentioned background technology Middle needs hole on steel pipe post connection concrete support beam cause the structural of steel pipe post The problem being deteriorated, it is provided that a kind of deep foundation pit supporting structure using steel pipe prop.
The technical solution of the utility model is: a kind of deep foundation pit support using steel pipe prop Structure, including the steel pipe post being erected in deep basal pit and being fixed on outside steel pipe post with its axle The support beam being distributed in divergent shape centered by line;Steel pipe post upper end passes support beam, its feature It is: described steel pipe post outer wall is provided with upper support along the axis direction spacer sleeve of steel pipe post Plate and lower supporting plate, upper backup pad and lower supporting plate are welded on the outside of steel pipe post, upper support Being welded with many first reinforcing rods on the upper and lower end face of plate and lower supporting plate, the first reinforcing rod is stretched Enter to by the support beam of steel pipe post supporting;Pour in upper and lower gripper shoe with support beam even Connect the node concrete post being integrated.
It is provided with polylith riser, polylith between the most described upper backup pad and lower supporting plate Riser is distributed in divergent shape centered by the axis of steel pipe post, and riser upper/lower terminal welds respectively Being connected on upper backup pad and lower supporting plate, the sidepiece of riser is welded between upper and lower gripper shoe The outer wall of steel pipe post.
The most described riser includes starting stave and the second riser, the level of starting stave Between transverse width is staggered less than the horizontal cross width of the second riser, starting stave and the second riser Every arrangement, starting stave outboard end is welded with the 4th reinforcing rod of multi-ring annular, the second riser On offer the short slot that the 4th reinforcing rod passes, the 4th reinforcing rod through short slot be looped around first erect Outside plate, starting stave and the second riser are bundled into overall structure.
It is arranged with and upper and lower on steel pipe post outer wall between further upper and lower gripper shoe The middle gripper shoe that fagging is parallel, the position that riser is corresponding with middle gripper shoe is provided with in clamping support Plate through groove, middle gripper shoe is through the outer wall being connected on steel pipe post through slot welding.
Further it is welded with polylith floor on the lower surface of lower supporting plate;Described floor is with steel Being distributed in divergent shape centered by the axis of tube column, the upper end of floor is welded under lower supporting plate On end face, floor sidepiece is welded on steel pipe post outer wall.
Further it is welded with multi-turn on the upper surface of upper backup pad and the lower surface of lower supporting plate Second reinforcing rod of annular;Described the second reinforcing rod cincture centered by the axis of steel pipe post Outside steel pipe post, the second reinforcing rod is welded to connect with there being overlapping the first reinforcing rod intersected, the Two reinforcing rods are cast in node concrete post.
It is welded with many 3rd reinforcing rods on the lower surface of the most described middle gripper shoe;Institute The 3rd reinforcing rod stated is through being wound on outside steel pipe post through grooved ring, and the 3rd reinforcing rod extend into and props up In support beam.
Further first reinforcing rod and the 3rd reinforcing rod centered by the axis of steel pipe post in Divergent shape is looped around outside steel pipe post.
It is provided with the first of multiple through upper backup pad on the most described upper backup pad to water Build hole, multiple first pouring holes centered by the axis of steel pipe post ringwise even structure arrange On upper backup pad.
Further offer the second pouring hole of two through risers on every piece of riser, two Two pouring holes are placed on the plate body of the upper and lower both sides of groove.
Advantage of the present utility model has: 1, by steel pipe post and the company of concrete support beam Connect increase gripper shoe, the horizontal area increasing steel pipe post with this at node, enhance support Bonding strength between beam and support beam, expands the space that steel pipe occupies, it is ensured that node can The transmission support beam axial compressive force leaned on;
2, by increasing node concrete post and the steel that gripper shoe, riser and floor pour as skeleton Tube column is fixing to be connected, it is ensured that node and the structural strength of steel pipe post, it is ensured that node can hold Other vertical loads etc. that load concrete support deadweight and construction error cause;
3, this utility model all uses the mode being welded to connect, not perforate on steel pipe post And fluting, the structural strength of steel pipe post will not be reduced, steel pipe post can play good axle To supporting role;
4, this utility model use reinforcing rod is as node concrete post and the framework of steel reinforcement of concrete supported beam, Reinforcing rod is welded to connect with gripper shoe, then forms stable node by concreting together Supporting construction, it is ensured that node strength;
5, gripper shoe, riser, floor and the reinforcing rod that this utility model uses is all conventional knot Structure, standard is unified, can be produced by factory is unified, on-the-spot unified construction, it is adaptable to various execute Work situation, versatility is extremely strong;
6, this utility model simple in construction, easy to operate, node structure intensity is high, it is possible to have The transmission axial compressive force of effect, on steel pipe post, is effectively guaranteed foundation pit construction and road traffic Unimpeded, there is great promotional value.
Accompanying drawing explanation
Fig. 1: top view of the present utility model;
Fig. 2: the A-A view in this utility model Fig. 1;
Fig. 3: the B-B view in this utility model Fig. 1;
Fig. 4: the C-C view in this utility model Fig. 2;
Fig. 5: the structural representation of upper backup pad of the present utility model;
Fig. 6: the structural representation of starting stave of the present utility model;
Fig. 7: the structural representation of the second riser of the present utility model;
Fig. 8: the structural representation of middle gripper shoe of the present utility model;
Fig. 9: the structural representation of floor of the present utility model;
Figure 10: reinforcing rod arrangement schematic diagram of the present utility model;
Wherein: 1 steel pipe post;2 upper backup pads;3 lower supporting plates;Gripper shoe in 4; 5 starting staves;6 second risers;7 floors;8 first reinforcing rods;9 second steel Rib;10 the 3rd reinforcing rods;11 the 4th reinforcing rods;12 first pouring holes;13 Two pouring holes;14 pass groove;15 short slots;16 breach;17 support beams.
Detailed description of the invention
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Such as Fig. 1~10, a kind of deep foundation pit supporting structure using steel pipe prop, including erecting Standing in the steel pipe post 1 in deep basal pit, steel pipe post 1 is as vertical axial support structure, steel The node supporting construction no less than one layer it is provided with, the supporting that the present embodiment describes on tube column 1 Structure is the node on steel pipe post 1 outer wall centre, is not the node knot on steel pipe post 1 top Structure.The support beam 17 of the present embodiment is arranged on the outer wall of steel pipe post 1, with steel pipe post 1 Axis centered by divergent shape be distributed, the upper end of steel pipe post 1 pass support beam 17.
The axis of steel pipe post 1 is that vertical direction is arranged, lower end is fixed on deep basal pit column pile foundation In.Steel pipe post 1 is from top to bottom arranged with upper backup pad 2, middle gripper shoe 4 and lower supporting plate 3, it is vertical that what upper backup pad 2, middle gripper shoe 4 and lower supporting plate 3 were intervally arranged is welded on steel pipe On post 1 vertical with steel pipe post 1 axis.Node is formed by casting concrete on the supporting plate Concrete post and support beam 17 are connected as entirety, it is to avoid direct perforate on steel pipe post 1, Fagging adds the intensity of node concrete post, strengthens node concrete post strong with the connection of steel pipe post 1 Degree.
As shown in figures 2-3, polylith first it is provided with between upper backup pad 2 and lower supporting plate 3 Riser 5 and the second riser 6, starting stave 5 and the second riser 6 staggered interval layout, second Riser 6 is arranged between adjacent two pieces of starting staves 5, and starting stave 5 is arranged in adjacent two pieces Between second riser 6, the horizontal cross width of starting stave 5 is less than the level of the second riser 6 Transverse width.The upper end of starting stave 5 and the second riser 6 is welded on the lower end of upper backup pad 2 On face, lower end is welded on the upper surface of lower supporting plate 3, and sidepiece is welded on upper and lower gripper shoe Between steel pipe post 1 on.Upper and lower gripper shoe is consolidated by starting stave 5 and the second riser 6 Be connected on steel pipe post 1.Riser enhance gripper shoe along steel pipe post 1 axially on strong Degree, further enhances the intensity of node concrete post.
Starting stave 5 and the second riser 6 are worn towards being provided with on the side plate body of steel pipe post 1 Cross groove 14, such as Fig. 6~7, on starting stave 5 and the second riser 6 through groove 14 formed with Cirque structure centered by the axis of steel pipe post 1, middle gripper shoe 4 is through through groove 14 Fix be connected with starting stave 5 and the second riser 6.
As shown in figures 2-3, the lower surface of lower supporting plate 3 is welded with polylith floor 7, rib Plate 7 is distributed in divergent shape centered by the axis of steel pipe post 1, and the upper end of floor 7 is welded on On the lower surface of lower supporting plate 3, floor 7 sidepiece is welded on steel pipe post 1.Floor 7 is used To support lower supporting plate 3, strengthen the bonding strength of lower supporting plate 3 and steel pipe post 1, thus Strengthen the intensity of whole node.The effect acting on riser of floor 7 is similar to, under supporting Bonding strength between gripper shoe 3 and steel pipe post 1, strengthens the intensity of node concrete post.
It is welded with many on the upper and lower end face of upper backup pad 2 and lower supporting plate 3 to divide in divergent shape First reinforcing rod 8 of cloth, as shown in figures 2-3, the first reinforcing rod 8 is with steel pipe post 1 Being distributed in divergent shape centered by axis, a part of first reinforcing rod 8 is looped around steel pipe post 1 Outside does not contacts with steel pipe post 1, and a part of first reinforcing rod 8 is welded on steel pipe post 1, First reinforcing rod 8 need not pass steel pipe post 1, does not results in steel pipe post 1 structural damage, Ensure that the structural strength of steel pipe post 1.
The first reinforcing rod 8 beyond gripper shoe arranges according to the direction of concrete support beam 17, The reinforced concrete support with the first reinforcing rod 8 as framework of steel reinforcement is formed by casting concrete Beam 17.Also concrete has been poured, by upper and lower support in the upper and lower gripper shoe of the present embodiment Plate, starting stave the 5, second riser 6, middle gripper shoe 4 are cast in formation node concrete post together, Node concrete post forms stable supporting construction, node together with being cast in concrete support beam 17 Concrete post enhances the bonding strength between concrete support beam 17 and steel pipe post 1.Support beam 17 radially distribute centered by the axis of steel pipe post 1, certainly retransmitting in support beam 17 Being delivered in the axial direction of steel pipe post 1, the axial compressive force of support beam 17 can pass through node concrete simultaneously Post effectively transmits.Concrete support beam 17 is connected or other with other steel pipe post 1 Support structure connects the cancellated horizontal support structure of formation.
In order to strengthen upper backup pad 2 and the structural strength of lower supporting plate 3, the present embodiment is also upper The second reinforcing bar of multi-ring annular it is welded with on the end face of both sides up and down of gripper shoe 2 and lower supporting plate 3 Bar 9, the second reinforcing rod 9 is looped around outside steel pipe post 1 centered by the axis of steel pipe post 1, Second reinforcing rod 9 is welded to connect with there being overlapping the first reinforcing rod 8 intersected, the second reinforcing rod 9 Also it is cast in node concrete post.The setting of the second reinforcing rod 9 is the strong of the upper and lower gripper shoe of enhancing Degree, also further enhances the structural strength of node concrete post, thus improves the stability of whole node.
As shown in figures 2-3, the upper and lower end face of middle gripper shoe 4 is welded with many 3rd steel Rib 10, the 3rd reinforcing rod 10 is through being looped around steel pipe post 1 through groove 14 on riser Outside be divergent shape distribution, the first reinforcing rod 8 and the 3rd reinforcing rod 10 are positioned at upper and lower Part between fagging is cast in node concrete post, is positioned at the part outside upper and lower gripper shoe and waters Build in support beam 17.First reinforcing rod the 8, second reinforcing rod 9 and the 3rd reinforcing rod 10 are handed over Staggered arrangement cloth, forms longitude and latitude structure, enhances the structural strength of node concrete post, improve whole joint The stability of point.
Starting stave 5 has wrapped around multi-turn the 4th reinforcing rod 11 away from steel pipe post 1, 4th reinforcing rod 11 is centered around outside starting stave 5 with upper and lower superposition and evenly spaced mode, Offer, on second riser 6, the short slot 15 that the 4th reinforcing rod 11 passes.4th reinforcing rod 11 It is fixed on the second riser 6 through short slot 15 spot welding, as it is shown on figure 3, the 4th reinforcing rod 11 Being looped around the outside of starting stave 5, all of riser can effectively be tied up by such structure Being connected to become overall structure, the concrete post after pouring is more stable firmly.4th reinforcing rod 11 with Arranging centered by the axis of steel pipe post 1, one is can be effectively by starting stave 5 and second Riser 6 bundles, but can increase the structural strength of node concrete post further.
For the ease of pouring node concrete post, the present embodiment is on upper backup pad 2 and lower supporting plate 3 Offer multiple the first through pouring hole 12, as it is shown in figure 5, multiple first pouring hole 12 Centered by the axis of steel pipe post 1, even structure is arranged in upper backup pad 2 and lower ringwise On fagging 2.When pouring, concrete grout is flowed into upper backup pad 2 and lower from these pouring holes Between fagging 3 formed node concrete post, by upper backup pad 2, lower supporting plate 3, middle gripper shoe 4, Together with starting stave 5 is cast in the second riser 6.
It addition, for Concrete Structure slurry mobility between upper and lower gripper shoe, this enforcement Example offers two through second on the plate face of every piece of starting stave 5 and the second riser 6 and waters Building hole 13, as shown in figs. 6-7, two the second pouring holes 13 are placed in through groove about 14 On the plate body of both sides, the axis in the vertical direction of two the second pouring holes 13 heavy and.The Two pouring holes 13 are arranged on the plate body of riser, add the coagulation between upper and lower gripper shoe The flowing of soil paste, it is ensured that can there be enough Concrete Filleds riser both sides.
Starting stave 5 and the second riser about 6 two ends are provided with the first steel dodged in gripper shoe Rib 8 and the yi word pattern notch of the second reinforcing rod 9, it is ensured that around the reinforcing bar of steel pipe post 1 both sides Bar may pass through gripper shoe and do not turns off, it is also possible to improve the welding secondary stress of intersection weld seam.
Floor 7 upper end offers breach 16, to dodge first on lower supporting plate 3 lower surface Reinforcing rod 8 and the breach 16 of the second reinforcing rod 9.
During use, 1, at deep pit digging to concrete support ground elevation, a bed die, tie up Prick the first reinforcing rod 8;At steel pipe post node, local excavation downwards is to the sky having construction node Between, steel pipe welds floor 7, installs and weld the first reinforcing rod 8 and the second reinforcing rod 9;
2, weld successively at node for first reinforcing rod 8 connect anchoring lower supporting plate 3, Starting stave 5, middle gripper shoe the 4, second riser 6 and upper backup pad 2, then at upper backup pad Upper welding the second reinforcing rod 9, welds the 3rd reinforcing rod 10 in middle gripper shoe 4, erects first Install on plate 5 and the second riser 6 and solder joint fixes the 4th reinforcing rod 11, in colligation node Reinforcing bar, as shown in Figure 10;
3, formwork supporting plate, pours node concrete post and support beam 17 concrete, treats that concrete reaches strong After degree, continue next step operation.
Of the present utility model ultimate principle, principal character and this practicality are more than shown and described new The advantage of type.Skilled person will appreciate that of the industry, this utility model is not by above-described embodiment Restriction, principle of the present utility model is simply described described in above-described embodiment and description, On the premise of without departing from this utility model spirit and scope, this utility model also has various change Change and improve, in the range of these changes and improvements both fall within claimed this utility model.This Utility model claims scope and is defined by appending claims and equivalent thereof.

Claims (10)

1. use a deep foundation pit supporting structure for steel pipe prop, including being erected at deep base Steel pipe post (1) in hole and be fixed on steel pipe post (1) outside centered by its axis in The support beam (17) of divergent shape distribution;Described steel pipe post (1) upper end passes support beam (17), It is characterized in that: described steel pipe post (1) outer wall is along the axis direction of steel pipe post (1) Spacer sleeve is provided with upper backup pad (2) and lower supporting plate (3), upper backup pad (2) and lower support Plate (3) is welded on the outside of steel pipe post (1), upper backup pad (2) and lower supporting plate (3) Upper and lower end face on be welded with many first reinforcing rods (8), the first reinforcing rod (8) stretches into To by the support beam (17) of steel pipe post (1) supporting;Pour in upper and lower gripper shoe The node concrete post connected as one with support beam (17).
A kind of deep foundation pit support using steel pipe prop the most as claimed in claim 1 is tied Structure, it is characterised in that: it is provided with between described upper backup pad (2) and lower supporting plate (3) Polylith riser, polylith riser is distributed in divergent shape centered by the axis of steel pipe post (1), Riser upper/lower terminal is respectively welded on upper backup pad (2) and lower supporting plate (3), riser The outer wall of steel pipe post (1) that is welded between upper and lower gripper shoe of sidepiece.
A kind of deep foundation pit support using steel pipe prop the most as claimed in claim 2 is tied Structure, it is characterised in that: described riser includes starting stave (5) and the second riser (6), The horizontal cross width of starting stave (5) is less than the horizontal cross width of the second riser (6), Starting stave (5) and the second riser (6) interlock and are intervally arranged, starting stave (5) outside End is welded with the 4th reinforcing rod (11) of multi-ring annular, and the second riser (6) offers The short slot (15) that four reinforcing rods (11) pass, the 4th reinforcing rod (11) passes short slot (15) It is looped around starting stave (5) outside starting stave (5) and the second riser (6) to be bundled into Overall structure.
A kind of deep foundation pit support using steel pipe prop the most as claimed in claim 3 is tied Structure, it is characterised in that: it is arranged with on steel pipe post (1) outer wall between upper and lower gripper shoe The middle gripper shoe (4) parallel with upper and lower gripper shoe, riser is corresponding with middle gripper shoe (4) Position be provided with gripper shoe in clamping (4) through groove (14), middle gripper shoe (4) passes The outer wall of steel pipe post (1) it is welded on through groove (14).
A kind of deep foundation pit support using steel pipe prop the most as claimed in claim 4 is tied Structure, it is characterised in that: it is welded with polylith floor (7) on the lower surface of lower supporting plate (3); Described floor (7) is distributed in divergent shape centered by the axis of steel pipe post (1), floor (7) upper end is welded on the lower surface of lower supporting plate (3), and floor (7) sidepiece welds At steel pipe post (1) outer wall.
A kind of deep foundation pit support using steel pipe prop the most as claimed in claim 1 is tied Structure, it is characterised in that: the upper surface of upper backup pad (2) and the lower surface of lower supporting plate (3) On be welded with second reinforcing rod (9) of multi-ring annular;Described the second reinforcing rod (9) is with steel Steel pipe post (1) it is looped around outward, the second reinforcing rod (9) centered by the axis of tube column (1) Being welded to connect with there being overlapping the first reinforcing rod (8) intersected, the second reinforcing rod (9) is cast in In node concrete post.
A kind of deep foundation pit support using steel pipe prop the most as claimed in claim 4 is tied Structure, it is characterised in that: it is welded with many 3rd on the lower surface of described middle gripper shoe (4) Reinforcing rod (10);The 3rd described reinforcing rod (10) is through being looped around steel through groove (14) Outward, the 3rd reinforcing rod (10) extend in support beam (17) tube column (1).
A kind of deep foundation pit support using steel pipe prop the most as claimed in claim 7 is tied Structure, it is characterised in that: the first reinforcing rod (8) and the 3rd reinforcing rod (10) are with steel pipe post (1) steel pipe post (1) it is looped around in divergent shape outward centered by axis.
A kind of deep foundation pit support using steel pipe prop the most as claimed in claim 1 is tied Structure, it is characterised in that: it is provided with multiple through upper backup pad on described upper backup pad (2) (2) the first pouring hole (12), multiple first pouring holes (12) are with steel pipe post (1) Axis centered by ringwise even structure be arranged on upper backup pad (2).
A kind of deep foundation pit support using steel pipe prop the most as claimed in claim 2 is tied Structure, it is characterised in that: offer second pouring hole (13) of two through risers on every piece of riser, Two the second pouring holes (13) are placed on the plate body of groove (14) both sides up and down.
CN201620520202.3U 2016-05-31 2016-05-31 A kind of deep foundation pit supporting structure using steel pipe prop Active CN205776252U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105908755A (en) * 2016-05-31 2016-08-31 中铁第四勘察设计院集团有限公司 Deep foundation pit supporting structure adopting steel pipe temporary strut

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105908755A (en) * 2016-05-31 2016-08-31 中铁第四勘察设计院集团有限公司 Deep foundation pit supporting structure adopting steel pipe temporary strut

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