CN103233478A - Column structure and foundation pit supporting system comprising same - Google Patents
Column structure and foundation pit supporting system comprising same Download PDFInfo
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- CN103233478A CN103233478A CN2013101652436A CN201310165243A CN103233478A CN 103233478 A CN103233478 A CN 103233478A CN 2013101652436 A CN2013101652436 A CN 2013101652436A CN 201310165243 A CN201310165243 A CN 201310165243A CN 103233478 A CN103233478 A CN 103233478A
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Abstract
The invention discloses a column structure. The column structure is used for a building foundation pit supporting system and comprises a plurality of sections. At least some of the plurality of sections are lattice column sections, and at least two sections are fixedly connected together through an end member. The end member comprises an end plate with the center provided with an open hole, a plurality of first rib plates and a plurality of second rib plates. End portions of lattice columns are connected to the end plate by welding, and the first rib plates and the second rib plates enable the end plate to be connected to the corresponding lattice column sections by welding respectively on a first side and an opposite second side of the end plate. Due to the end member, connection between column sections such as the lattice column sections becomes easy and reliable.
Description
Technical field
The present invention relates to a kind of pillar construction for the building foundation pit supporting system, and a kind of building foundation pit supporting system that comprises this pillar construction.
Background technology
Along with the rapid development of China's economic and the quickening of the cities and towns process of integration, available soil space is more and more littler, and for taking full advantage of non-renewable land resources, building is inevitable to high-altitude and underground development.Subterranean railway, underground garage, underground store, basement in high rise building are increasing.Deep-foundation pit engineering inevitably appears in the process utilizing to underground space development, and pattern foundation pit supporting structure is the emphasis link in the foundation pit construction, often adopt the inner supporting structure system deeply or at the soft clay area pattern foundation pit supporting structure at foundation ditch, almost all adopt the shaped steel lattice column at this structural system central post, after treating that underground construction is finished, all steel lattice column is slit into the segment dismounting with gas cutting and is transported to the scrap iron recycle bin then.
In the prior art, because the pillar construction form is single, the key technology in the processing and fabricating can not break through, and can only disposablely use, and specifically has following weak point:
1), long construction period: owing to adopt the single type steel lattice column, all finished by four limb posts or two limb posts and a lot of batten plate welding during making, required operation is more loaded down with trivial details, time-consuming, can not satisfy the requirement of duration.
2) the steel waste is big: bought the influence of former material and strut length, the shaped steel lattice column unavoidably needs spreading, at present conventional method is overlap joint, and welding again after namely each limb post need be got and help to connect with one section the same material of former material had so not only been wasted steel but also increased the welding job amount.
3) welding back quality can not get guaranteeing: the shaped steel lattice column when spreading if adopt limb post butt welding method, be processed into the different shaped steel lattice column of some segment length earlier, and then carry out limb post butt joint according to requirement of engineering, because each segment type steel lattice column exists deviation to add welding deformation when making, have the misalignment situation in the butt joint of two segment type steel lattice columns, the grade that welding point does not reach in the engineering requires to exist serious potential safety hazard by force.
4) pillar construction must be cast in floor at the scene, does not have at present the crossover tool device that namely is connected with concrete floor and is connected with column, and column can not take out and only limit to once use.
5) after major structure of construction is finished, must remove support system, when removing column, the concrete in the post, fillers such as rubble and mud are difficult for taking out, so both increased dismounting transport difficulty and cost more be unfavorable for recycling.
Along with underground construction is more and more, the building industry is demanded developing a kind of easy construction urgently, guarantees quality, is produced pillar construction efficient, practical, recyclable utilization.
Summary of the invention
Thus, the purpose of this invention is to provide a kind of pillar construction, it can solve the above-mentioned shortcoming of part at least, promotes the recycling of pillar construction.
In first aspect, the invention provides a kind of pillar construction, be used for the building foundation pit supporting system, this pillar construction comprises a plurality of sections, in wherein said a plurality of section at least some are the lattice column section, and at least two sections are fixedly attached to together by tip member, described tip member comprises that central authorities have the end plate of perforate, a plurality of first floors and a plurality of second floor, wherein said lattice column end is connected by welding to described end plate, and described first and second floors are connected to corresponding lattice column section by welding with end plate with the second relative side in first side of end plate respectively.
Providing of this tip member makes between the column section that for example the connection between the lattice column section becomes light more, reliable.Particularly, the connection between the lattice column section no longer needs loaded down with trivial details in traditional method of attachment, consuming time also insecure butt joint.By tip member of the present invention, the lattice column section can connect together easily and reliably.Providing of floor increased the intensity and the reliability that connect.In addition, tip member of the present invention also provides lattice column section and other reliable connection between may section (for example steel pipe section).
Floor can comprise first edge that is welded to end plate and second edge that is welded to lattice column section side.Floor can be square or triangle steel plate.End plate can be square or circular steel plate.First and second floors can be circumferentially spaced apart around corresponding lattice column section respectively, and more preferably equal angles ground is spaced apart.Preferably, the lattice column section comprises many vertical shaped steel, and described floor makes second edge of floor be soldered to the side of corresponding shaped steel corresponding to the shaped steel setting.
Accordingly, the present invention also provides a kind of building foundation pit supporting system, comprises aforesaid pillar construction.
In second aspect, the invention provides a kind of pillar construction, be used for the building foundation pit supporting system, this pillar construction comprises at least one lattice column section and at least one steel pipe section, in wherein said each lattice column section and the steel pipe section at least two are fixedly attached to together by tip member, described tip member comprises that central authorities have the end plate of perforate, a plurality of first floors and a plurality of second floor, the end of wherein said at least two sections is connected by welding to end plate, wherein said first and second floors are connected to respective section by welding with end plate with the second relative side in first side of end plate respectively, and described first and second floors are circumferentially spaced apart around respective section respectively.
This tip member provide the connection that makes between the lattice column section become more easily, reliable, make it possible to realize the reliable connection between the infeasible steel pipe and lattice column originally in addition.
Floor can comprise first edge that is welded to end plate and second edge that is welded to the respective section side.First and second floors can be circumferentially spaced apart around respective section respectively, and more preferably equal angles ground is spaced apart.
The steel pipe section can comprise the internal lining pipe that is enclosed within steel duct, so that internal lining pipe can be removed from steel pipe together with inside stuffing when removing pillar construction.The providing of internal lining pipe makes the filler that is filled into steel duct in work progress, can be removed easily as concrete etc., greatly reduces the cost of recycling steel pipe.Internal lining pipe can be by a kind of the making in plastic material, composite material, fibrous material, foamed material and the combination thereof.Can have separation layer between internal lining pipe and the steel pipe.Separation layer comprises releasing agent layer.This releasing agent layer can also can be the independent stratum that release agent material forms for being coated to the coating of internal lining pipe external surface and/or steel pipe internal-surface.
In the third aspect, the invention provides a kind of pillar construction, be used for the building foundation pit supporting system, this pillar construction is comprising the steel pipe section with at least one floor plates intersection, described pillar construction also comprises clamping apparatus, described clamping apparatus removably is fixedly attached to the steel pipe section and comprises a plurality of arms that stretch out, and the described arm that stretches out can be poured into and makes clamping apparatus in the floor plates, and the steel pipe section is fixedly attached to floor plates thus.
Do not providing under the situation of clamping apparatus of the present invention, because the column section is poured in the floor plates, the column section must cut off at the floor plates place when removing.Adding the upper pillar stand section also need be cut off with the horizontal support elements intersection, make in traditional support system, need be cut into very scrappy segment when column is removed, it has increased complexity and cost to recycling, can only deliver to recycle bin as scrap iron after column is removed.Use clamping apparatus of the present invention, when removing, only need to cut off and stretch out arm, then clamping apparatus is removed from column, make the single-piece length of callable column section increase greatly, reduce cost recovery, organic efficiency is provided, made the repeated use of pillar construction become feasible.
Preferably, clamping apparatus comprises installation portion, and described installation portion comprises a plurality of installation sections that connect together by machanical fastener, and the pulling force that described a plurality of sections apply by described machanical fastener tightens on the periphery that is fixed on the steel pipe section.Preferably, described steel pipe section comprises round steel pipe, and described a plurality of installation sections are a plurality of curved section, and described machanical fastener is bolt fastener.Preferably, the steel pipe section comprises rectangular steel tube, and described a plurality of installation sections are linear segments, and described machanical fastener is bolt fastener.
Preferably, this pillar construction can comprise at least one lattice column section and at least one steel pipe section, in wherein said each lattice column section and the steel pipe section at least two are fixedly attached to together by tip member, described tip member comprises that central authorities have the end plate of perforate, a plurality of first floor and a plurality of second floor, the end of wherein said at least two sections is connected by welding to end plate, and wherein said first and second floors are connected to respective section by welding with end plate with the second relative side in first side of end plate respectively.Preferably, floor comprises first edge that is welded to end plate and second edge that is welded to lattice column section side.Preferably, first and second floors are circumferentially spaced apart around corresponding lattice column section respectively.Preferably, the steel pipe section comprises the internal lining pipe that is enclosed within steel duct, so that internal lining pipe can be removed from steel pipe together with inside stuffing when removing pillar construction.Preferably, internal lining pipe is by a kind of the making in plastic material, composite material, fibrous material, foamed material and the combination thereof.Preferably, has separation layer between internal lining pipe and the steel pipe.Preferably, separation layer comprises releasing agent layer.
In fourth aspect, the invention provides a kind of pillar construction, be used for the building foundation pit supporting system, this pillar construction comprises at least one steel pipe section, described steel pipe section comprises the internal lining pipe that is enclosed within steel duct, so that internal lining pipe can be removed from steel pipe together with inside stuffing when removing pillar construction.
The providing of internal lining pipe makes the filler that is filled into steel duct in work progress, can be removed easily as concrete etc., greatly reduces the cost of recycling steel pipe.
Preferably, this pillar construction also comprises at least one lattice column section, in wherein said each lattice column section and the steel pipe section at least two are fixedly attached to together by tip member, described tip member comprises that central authorities have the end plate of perforate, a plurality of first floor and a plurality of second floor, the end of wherein said at least two sections is connected by welding to end plate, and wherein said first and second floors are connected to respective section by welding with end plate with the second relative side in first side of end plate respectively.Preferably, floor comprises first edge that is welded to end plate and second edge that is welded to lattice column section side.Preferably, first and second floors are circumferentially spaced apart around corresponding lattice column section respectively.Preferably, internal lining pipe is provided with the maintaining body that it is removably remained to steel duct.Preferably, maintaining body comprises and is positioned near the flange at least one end of internal lining pipe or is positioned on the internal lining pipe external surface outwards outstanding elastic bumps.Preferably, internal lining pipe is by a kind of the making in plastic material, composite material, fibrous material, foamed material and the combination thereof.Preferably, has separation layer between internal lining pipe and the steel pipe.Preferably, separation layer comprises releasing agent layer.
The feature of a first aspect of the present invention is applicable to of the present invention second to fourth aspect, and vice versa.
Description of drawings
Fig. 1 a shows a kind of schematic elevational view of example lattice column 10, and Fig. 1 b shows along the viewgraph of cross-section of the A-A line intercepting of Fig. 1 a.
Fig. 2 is the part schematic elevational view that shows support system 20 in the foundation ditch according to an embodiment of the invention substantially.
Fig. 3 a shows the schematic plan of exemplary termination according to an embodiment of the invention connecting elements 30, and Fig. 3 b shows the schematic sectional view of the termination connecting elements 30 that has been connected with the column section.
Fig. 4 shows the exemplary sectional view of the steel pipe section 40 of band internal lining pipe 42 according to an embodiment of the invention.
Fig. 5 a shows the schematic sectional view of clamping apparatus 50 according to an embodiment of the invention, and Fig. 5 b shows the schematic sectional view of another embodiment of clamping apparatus 60.
The specific embodiment
Below with reference to accompanying drawing the specific embodiment of the present invention is introduced, identical reference number is represented same or analogous parts in each figure.Should be understood that term " on ", D score, " making progress ", " downwards " directional terms be the description at the orientation shown in the accompanying drawing, these scopes are not restrictive.In addition, term as " vertically ", " column " only refers to that its direction relative " level " is more vertical, be not this rod structure of expression must be fully vertically or upright, but horizontal plane or ground line so vertically or uprightly namely can not tilt a little relatively.Generally speaking, if not otherwise specified, term herein " interior ", " outward ", " inboard ", " outside " refer to the orientation with respect to column, interior and inboard position or the orientation that refers to the center of more close or sensing column, and the outer and outside refers to further from orientation or the orientation at the center of column.
Fig. 1 a shows a kind of schematic elevational view of example lattice column 10, and Fig. 1 b shows along the viewgraph of cross-section of the A-A line intercepting of Fig. 1 a.Referring to Fig. 1 a and 1b, wherein show a kind of concrete structure of exemplary lattice column 10, wherein lattice column 10 is hollow unit, comprises four angle steel 14 and the batten plate 12 that links to each other with angle steel.Adjacent angle steel 14 connects together by being welded to batten plate 12.Polylith batten plate 12 is spaced apart along angle steel 14 length directions, and preferably equi-spaced apart is opened, thereby forms the opening that leads to lattice column inside that is limited by adjacent angle steel 14 and adjacent batten plate 12.
Lattice column does not alternately adopt four angle steel to add the structure of batten plate, and can adopt two shaped steel, and for example two channel-section steels, i iron add corresponding batten plate and may be used to form suitable lattice column.Lattice column also can adopt the shaped steel more than two any amount.Lattice column not necessarily must adopt shaped steel, also can adopt steel pipe to replace shaped steel.The structure of the lattice column of the introduction of specific embodiment therefore, is not restrictive.Batten plate 12 can arrange that at any angle shaped steel is connected to each other with respect to shaped steel.In specific embodiment, the longitudinal direction of batten plate 12 flatly arranges, and namely arrange perpendicular to angle steel 14, and per four of the batten plate that connects four angle steel is arranged on same level height, make that the opening that leads to lattice column inside is aligned with each other, form the opening that runs through lattice column.The opening that runs through lattice column can allow horizontal support elements to pass lattice column easily at column and horizontal support elements intersection at least, and is connected with lattice column, in order to the support of horizontal direction is provided for column.
Fig. 2 is the part schematic elevational view that shows support system in the foundation ditch according to an embodiment of the invention substantially.Support system comprises column 2.Column 2 vertically extends, and the second column section 23 that comprises the first column section 21 that is arranged in the castinplace pile 22 from top to bottom respectively, intersects with base plate 24, and the third and fourth column section 25,27 that alternately intersects with floor plates 26 and horizontal support structure 28.Castinplace pile 22 comprises the reinforcing cage 221 that arranges around the first column section 21, and by concrete perfusion reinforcing cage 221 and the first column section 21 firmly is attached to the stratum.Base plate 24 is arranged on castinplace pile 22 tight tops, and the upper surface 241 of base plate 24 provides the bottom floor surface of final underground structure in the underground space.Floor plates 26 is separated for each layer of underground structure, and the floor of each layer is provided.Horizontal support structure 28 provides the support of horizontal direction for foundation ditch, and horizontal support structure 28 is fixedly connected in its intersection with column 2.
When construction, at first, be bored into enough degree of depth downwards.In second step, be fit to the position with arriving in the hand-hole under reinforcing cage and the column.The 3rd step, fluid concrete in the hole to form pile foundation.Require the following concrete strength of stake top mark height will satisfy the design strength requirement, general concrete has 0.5 meter to 2 meters super filling height (distance between the height of the relative castinplace pile end face of the height of fluid concrete).Thus, column is anchored in the castinplace pile by the concrete cast.After this, can in the hole, tamp materials such as coarse sand, concrete, lime.After the column setting is finished, can excavate from top to bottom, and alternately arrange horizontal support elements and floor plates in the permanent position by design, annotate base plate at the hole bottom pour mold at last.Construction is removed column and horizontal support elements successively by order from the bottom up after finishing.
Also with reference to the accompanying drawings 2, column 2 is formed by connecting by lattice column section and steel pipe section.Termination connecting elements 30 is used to each section of column is interconnected.Column 2 is the steel pipe section with the section of floor plates intersection, and is provided with clamping apparatus 50, and the steel pipe section links to each other with the respective storey plate by clamping apparatus 50.The section that column 2 links to each other with horizontal support elements is the lattice column section, and the opening that runs through of lattice column section allows horizontal support elements to intersect and link with it more easily.Horizontal support elements can be to support ring beam, can comprise steel work and/or concrete structure.
Although column 2 is the steel pipe section with each floor plates intersection in the embodiment shown, this is not necessary.On the other hand, although column 2 all is connected by clamping apparatus 50 with each floor plates in the embodiment shown, this neither be necessary.It will be understood by those skilled in the art that column can not be all to comprise the steel pipe section in all and floor plates intersection, also can not be all to be connected by clamping apparatus according to the present invention between all steel pipe sections and floor plates.
Fig. 3 a shows the schematic plan of exemplary termination according to an embodiment of the invention connecting elements 30, and Fig. 3 b shows the schematic sectional view of the termination connecting elements 30 that has been connected with the column section.Each section of column is fixedly attached to together by termination connecting elements 30.As shown in the figure, termination connecting elements 30 comprises end plate 32 and floor 34.End plate 32 can be the Any shape of periphery greater than the periphery that is connected section.Periphery herein is bigger when referring to that end plate 32 is connected to the section that this is connected, and the periphery of end plate is surrounded the periphery that is connected section.Has geometric form perforate 36 on the end plate 32.This perforate 36 that is to say less than the zone that the inner surface that is connected section limits, when end plate is connected to the inboard that this perforate when being connected section is accommodated in the inner surface that is connected section.In selected embodiment perforate be shaped as circle hole shape, but perforate can be any suitable shape.On the effect, the whole end of preferred column contacts with the solid section (non-perforate part) of end plate.In the embodiment shown, end plate is the square or round plate corresponding to the steel pipe shape.End plate thickness can be 10mm in the 6mm-40mm scope in the embodiment shown.Floor 34 thickness are to be 10mm in the embodiment shown in the 6mm-20mm scope.The end that is connected section (the post limbs of steel pipe or shaped steel lattice parts) is directly connected to end plate 32 by welding.Floor 34 can additionally link together by welding end plate and being connected section (the post limbs of steel pipe or shaped steel lattice parts).The floor geometry can be square or triangle, is triangle in the embodiment shown.Floor can be any suitable shape, as long as one bar limit can be welded to end plate, and another limit can be welded on the side surface that is connected section.
Fig. 4 shows the exemplary sectional view of the steel pipe section 40 of band internal lining pipe 42 according to an embodiment of the invention.Be provided with interleaving agent 44 between steel pipe section 40 and the internal lining pipe 42.Internal lining pipe 42 cross sectional shapes are preferably and steel pipe 40 matched circles or square.That is to say that when steel pipe was round steel pipe, internal lining pipe 42 correspondingly was circular, and when steel pipe was rectangular steel tube, internal lining pipe 42 correspondingly was square.
Leave certain interval between the inwall of the outer wall of internal lining pipe and steel pipe parts.This gap is preferably in the 1mm-5mm scope.For example, when steel pipe was circle, the external diameter of internal lining pipe 42 was slightly less than the internal diameter of steel pipe 40, so that internal lining pipe 42 can be easily inserted in the steel pipe.This inside, gap can be filled with release agent layer, prevents that internal lining pipe 42 external surfaces are bonded to steel pipe.This separation layer can be release agent, and release agent can be wax (for example plant paraffin, animal paraffin, synthetic paraffin, microcrystalline wax, Tissuemat E) or powder release agent (for example talcum, mica, potter's clay, white clay etc.).Release agent layer can be for being independent of interior lining panel and steel pipe and in use being arranged between the two release agent layer in this case.Yet the applicant finds most advantageously to adopt concrete parting agent under study for action, spreads upon construction with on the internal lining pipe external surface or on the steel pipe internal-surface, so that concrete cast rear inner lining pipe is unlikely owing to concrete binding is difficult for removing to steel pipe internal-surface.Therefore, this release agent layer also can be the barrier coat that is coated on interior lining panel external surface and/or the steel pipe internal-surface, for example aforesaid concrete parting agent coating.
Internal lining pipe is provided with the structure that it is removably remained to steel pipe, for example (,) internal lining pipe at one end or two ends be provided with flange, flange is out of shape a little and in the steel pipe of packing into, thereby flange sets back internal lining pipe is remained to steel pipe after being in place.The setting of flange also helps the space that forms ccontaining interleaving agent, so that interleaving agent is remained in the space that is limited by flange, internal lining pipe and steel tube place.The part that the end plate of tip member extends to the steel pipe inboard also can be used to keep internal lining pipe, and this tip member is used for the steel pipe section is connected to other sections of column.Alternatively, internal lining pipe can be provided with at least one radially outer elastic bumps, when this elastic bumps inserts steel pipe at internal lining pipe, and elastic deformation under the effect of steel pipe internal-surface and utilize local friction to cooperate internal lining pipe is held in place.In a word, keeping structure can be any structure that it is contemplated that, as long as it can remain on internal lining pipe in the steel pipe, and can allow internal lining pipe easily to be removed from steel pipe after finishing using, so that the recycling of steel pipe.
Internal lining pipe can adopt any material to make.Under study for action, the applicant finds to adopt the material with high-expansion can prevent better that internal lining pipe from mixing in the earth process owing to the inner material expansion of holding causes breaking in grouting and filling.Therefore, the material of internal lining pipe preferably can be any in plastic material, particularly thermoplastic, composite material, fibrous material, foamed material etc. and the combination thereof.The wall thickness of internal lining pipe 42 can be in the 1mm-20mm scope.
Fig. 5 a shows the schematic sectional view of clamping apparatus 50 according to an embodiment of the invention, and Fig. 5 b shows the schematic sectional view of another embodiment of clamping apparatus 60.Clamping apparatus 50,60 can removably be fixedly attached to the steel pipe periphery, and has a plurality of arms that stretch out, and is used for being poured into floor plates and makes clamping apparatus fixedly connected with floor plates.
Particularly, referring to Fig. 5 a, clamping apparatus 50 comprises first slender member 52 and second slender member 54.The relative two sides of first and second slender members, 52,54 applying rectangular steel tubes, and by a plurality of bolton connect together.Particularly, first and second slender members 52,54 comprise corresponding perforate respectively, and bolt passes these perforates and applies clamping force so that first and second slender members 52,54 are clamped to described two opposite side surfaces respectively.The periphery that the two ends of first and second slender members 52,54 exceed the steel pipe section stretches out, and forms corresponding four and stretches out arm 56.Thus, in the time of on being fastened to steel pipe, each end of first and second slender members 52,54 can be cast in the floor plates, thereby the steel pipe section is secured to floor plates.In the embodiment shown, clamping apparatus 50 also comprises third and fourth slender member, and it is identical with first and second slender members 52,54, but clamps and be fixed to two relative sides in addition of rectangular steel tube.It is adjacent with first and second slender members 52,54 that third and fourth slender member is set to.That is to say that third and fourth slender member is oriented to and first and second slender members, 52,54 cardinal principle quadratures, and be tightened to this two relative sides in addition by bolt clip.In the illustrated embodiment, clamping apparatus 50 comprises the first, second, third and the 4th slender member, but this is not necessary, clamping apparatus can include only two (first and second or third and fourth) slender members, thereby it has four and stretches out arm, perhaps can comprise more slender members.
Referring to Fig. 5 b, clamping apparatus 60 is for releasably fastening to round steel pipe, and comprises first curved section 62 and second curved section 64.First and second curved section 62,64 are arranged on the periphery of round steel pipe, and are clamped to round steel pipe by the clamping force that bolt applies.Particularly, first and second curved section, 62,64 two ends comprise the perforation of aligning respectively, wherein bolt passes these holes with first and second curved section 62,64 connections also pull to each other, thereby apply clamping force first and second curved section 62,64 are clamped on the round steel pipe.Clamping apparatus 60 also comprises a plurality of arms 66 that stretch out, and it is connected to first and second curved section 62,64 and protruding from it.Stretch out arm 66 and can be fixedly attached to first and second curved section 62,64 by modes such as welding, riveted joint, machanical fasteners (for example being threaded etc.).Similarly, stretching out arm 66 can be cast in the floor plates, thereby the steel pipe section is secured to floor plates.
Although this paper shows each concrete embodiment, they are not restrictive.Those skilled in the art can expect implementing various substitute mode of the present invention or modification under design of the present invention.For example, clamping apparatus is not limited to two kinds of above-mentioned concrete forms, as long as clamping apparatus can be detachably connected to the steel pipe section, and provides protruding to be poured into the arm in the floor plates.Each feature is described in does not represent among the different embodiment that they can not be combined, and each feature among each embodiment can combination with one another arrive enforcement together, to realize more favourable effect.
Claims (7)
1. pillar construction, be used for the building foundation pit supporting system, this pillar construction comprises a plurality of sections, in wherein said a plurality of section at least some are the lattice column section, and at least two sections are fixedly attached to together by tip member, described tip member comprises that central authorities have the end plate of perforate, a plurality of first floor and a plurality of second floor, wherein said lattice column end is connected by welding to described end plate, and described first and second floors are connected to corresponding lattice column section by welding with end plate with the second relative side in first side of end plate respectively.
2. pillar construction as claimed in claim 1, wherein said floor comprises first edge that is welded to end plate and second edge that is welded to lattice column section side.
3. pillar construction as claimed in claim 2, wherein said floor is square or the triangle steel plate.
4. pillar construction as claimed in claim 1, wherein said end plate is square or circular steel plate.
5. as each described pillar construction among the claim 1-4, wherein said first and second floors are spaced apart around the circumferential equal angles of corresponding lattice column section ground respectively.
6. pillar construction as claimed in claim 2, wherein said lattice column section comprises many vertical shaped steel, described floor makes second edge of floor be soldered to the side of corresponding shaped steel corresponding to the shaped steel setting.
7. building foundation pit supporting system comprises as above each described pillar construction in the claim.
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| CN201310165243.6A CN103233478B (en) | 2013-05-08 | 2013-05-08 | Pillar construction and comprise the foundation pit support system of this pillar construction |
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| CN201310165243.6A CN103233478B (en) | 2013-05-08 | 2013-05-08 | Pillar construction and comprise the foundation pit support system of this pillar construction |
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| CN103233478B (en) | 2016-01-20 |
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