CN203475438U - Column structure and foundation pit supporting system comprising same - Google Patents

Abstract

The utility model provides a column structure which is used for constructing a foundation pit supporting system. The column structure comprises lattice column sections in the intersection position with at least one floor plate, and further comprises a clamping device, wherein the clamping device is detachably and fixedly connected to the lattice column sections and comprises a plurality of extension arm parts; and the extension arm parts can be casted into a floor plate, so that the clamping device and the lattice column sections are fixedly connected to the floor plate. With the adoption of the clamping device of the column structure, only the extension arm parts are required to be cut off during dismounting, and then the clamping device is dismounted from a column, so that the length of a single recyclable piece in each column section is increased greatly, the recovery cost is reduced, the recovery efficiency is improved, and the reuse of the column structure is feasible.

Description

Pillar construction and comprise the foundation pit support system of this pillar construction

Technical field

The utility model relates to a kind of pillar construction for 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 less, and for making full use 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.In utilizing process to underground space development, inevitably there is deep-foundation pit engineering, and pattern foundation pit supporting structure is the emphasis link in foundation pit construction, dark or often adopt inner supporting structure system in Soft Deep Foundation Pit supporting at foundation ditch, at this structural system central post, almost all adopt shaped steel lattice column, after underground construction completes, all steel lattice column is slit into segment dismounting with gas cutting and is then transported to scrap iron recycle bin.

In prior art, because pillar construction form is single, the key technology in processing and fabricating can not break through, and can only disposablely use, and specifically has following weak point:

1), long construction period: owing to adopting single type steel lattice column, all welded the requirement that required operation is more loaded down with trivial details, time-consuming, can not meet the duration during making by four limb posts or two limb posts and a lot of batten plates.

2) steel waste is large: bought the impact of former material and strut length, shaped steel lattice column unavoidably needs spreading, conventional method is overlap joint at present, and each limb post welds after need to getting and helping to connect with one section of the same material of former material again, has so not only wasted steel but also has increased welding job amount.

3) after welding, quality can not be guaranteed: if shaped steel lattice column adopts limb post butt welding method when spreading, first be processed into the shaped steel lattice column that some segment length are different, and then carry out the docking of limb post according to requirement of engineering, because each segment type steel lattice column exists deviation to add welding deformation when making, in two segment type steel lattice column docking, have misalignment situation, the grade that welding point does not reach in engineering requires by force to exist serious potential safety hazard.

4) together with pillar construction must be cast in floor at the scene, there is no at present the crossover tool device that is connected with concrete floor and is connected with column, column can not take out and only limit to once use.

5), after major structure of construction completes, must remove support system, when removing column, the concrete in post, the fillers such as rubble and mud are difficult for taking out, so both increased dismounting transport difficulty and cost be more unfavorable for recycling.

Along with underground construction is more and more, building industry urgently develops that a kind of easy construction, ensure quality, production are efficient, practical, the pillar construction of recoverable.

Utility model content

Thus, the purpose of this utility model is to provide a kind of pillar construction, and it at least can solve the above-mentioned shortcoming of part, promotes the recycling of pillar construction.

In first aspect, the utility model provides a kind of pillar construction, for building foundation pit supporting system, this pillar construction comprises a plurality of sections, at least some in wherein said a plurality of section are lattice column section, and at least two sections are fixedly attached to together by tip member, described tip member comprises that central authorities are with the end plate of perforate, a plurality of the first floors and a plurality of the second floor, wherein said lattice column end is connected by welding to described end plate, described the first and second floors are connected to corresponding lattice column section by welding by end plate with the second relative side at the first case of end plate respectively.

Providing of this tip member makes between column section, and for example the connection between lattice column section becomes more light, reliable.Particularly, the connection between lattice column section no longer needs loaded down with trivial details in traditional method of attachment, consuming time also insecure docking.By tip member of the present utility model, 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 utility model also provides for example, reliable connection between may section (steel pipe section) of lattice column section and other.

Floor can comprise the second edge that is welded to the first edge of end plate and is welded to lattice column section side.Floor can be square or triangle steel plate.End plate can be square or circular steel plate.The 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, lattice column section comprises many longitudinal shaped steel, and described floor is corresponding to shaped steel setting, makes the second edge of floor be soldered to the side of corresponding shaped steel.

Accordingly, the utility model also provides a kind of building foundation pit supporting system, comprises pillar construction as above.

In second aspect, the utility model provides a kind of pillar construction, for building foundation pit supporting system, this pillar construction comprises at least one lattice column section and at least one steel pipe section, wherein said each lattice column section is together with in steel pipe section at least two are fixedly attached to by tip member, described tip member comprises that central authorities are with the end plate of perforate, a plurality of the first floors and a plurality of the second floor, the end of wherein said at least two sections is connected by welding to end plate, wherein said the first and second floors are connected to respective section by welding by end plate with the second relative side in the first side of end plate respectively, and described the first and second floors are circumferentially spaced apart around respective section respectively.

The connection making between lattice column section that provides of this tip member becomes more light, reliable, makes it possible in addition realize the reliable connection between the infeasible steel pipe of script and lattice column.

Floor can comprise the first edge that is welded to end plate and the second edge that is welded to respective section side.The first and second floors can be circumferentially spaced apart around respective section respectively, and more preferably equal angles ground is spaced apart.

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.Internal lining pipe the filler that makes to be filled into steel duct in work progress is provided, as concrete etc. can be removed easily, greatly reduce the cost of recycling steel pipe.Internal lining pipe can be in plastic material, composite material, fibrous material, foamed material and combination thereof a kind of making.Between internal lining pipe and steel pipe, can there is separation layer.Separation layer comprises releasing agent layer.This releasing agent layer can, for being coated to the coating of internal lining pipe external surface and/or steel pipe internal-surface, can be also the independent stratum that release agent material forms.

In the third aspect, the utility model provides a kind of pillar construction, for building foundation pit supporting system, this pillar construction is comprising lattice column section with at least one floor plates intersection, described pillar construction also comprises clamping apparatus, described clamping apparatus is removably fixedly attached to lattice column section and comprises a plurality of arms that stretch out, described in stretch out arm and can be poured into and in floor plates, make clamping apparatus, and lattice column section is fixedly attached to floor plates thus.

In the situation that clamping apparatus of the present utility model is not provided, because column section is poured in floor plates, when removing, column section must cut off at floor plates place.Adding upper pillar stand section also need to be cut off with horizontal support elements intersection, make in traditional support system, when column is removed, need be cut into very scrappy segment, it has increased complexity and cost to recycling, after column is removed, can only deliver to recycle bin as scrap iron.Use clamping apparatus of the present utility model, when removing, only need to cut off and stretch out arm, then clamping apparatus is removed from column, the single-piece length of callable column section is increased greatly, reduce cost recovery, organic efficiency is provided, made reusing 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 clamps on the periphery that is fixed on lattice column section.Preferably, 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, wherein said each lattice column section is together with in steel pipe section at least two are fixedly attached to by tip member, described tip member comprises that central authorities are with the end plate of perforate, a plurality of the first floor and a plurality of the second floor, the end of wherein said at least two sections is connected by welding to end plate, and wherein said the first and second floors are connected to respective section by welding by end plate with the second relative side in the first side of end plate respectively.Preferably, floor comprises the second edge that is welded to the first edge of end plate and is welded to lattice column section side.Preferably, the first and second floors are circumferentially spaced apart around corresponding lattice column section respectively.Preferably, 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, a kind of make of internal lining pipe in plastic material, composite material, fibrous material, foamed material and combination thereof.Preferably, between internal lining pipe and steel pipe, there is separation layer.Preferably, separation layer comprises releasing agent layer.

In fourth aspect, the utility model provides a kind of pillar construction, for 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.

Internal lining pipe the filler that makes to be filled into steel duct in work progress is provided, as concrete etc. can be removed easily, greatly reduce the cost of recycling steel pipe.

Preferably, this pillar construction also comprises at least one lattice column section, wherein said each lattice column section is together with in steel pipe section at least two are fixedly attached to by tip member, described tip member comprises that central authorities are with the end plate of perforate, a plurality of the first floor and a plurality of the second floor, the end of wherein said at least two sections is connected by welding to end plate, and wherein said the first and second floors are connected to respective section by welding by end plate with the second relative side in the first side of end plate respectively.Preferably, floor comprises the second edge that is welded to the first edge of end plate and is welded to lattice column section side.Preferably, the 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 internal lining pipe external surface outwards outstanding elastic bumps.Preferably, a kind of make of internal lining pipe in plastic material, composite material, fibrous material, foamed material and combination thereof.Preferably, between internal lining pipe and steel pipe, there is separation layer.Preferably, separation layer comprises releasing agent layer.

The feature of first aspect of the present utility model is applicable to of the present utility model second to fourth aspect, and vice versa.

Accompanying drawing explanation

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 substantially showing according to the foundation ditch inner support system 20 of an embodiment of the present utility model.

Fig. 3 a shows according to the schematic plan of the exemplary termination connecting elements 30 of an embodiment of the present utility model, and Fig. 3 b shows the schematic sectional view of the termination connecting elements 30 being connected with column section.

Fig. 4 shows according to the exemplary sectional view of the steel pipe section 40 with internal lining pipe 42 of an embodiment of the present utility model.

Fig. 5 a shows according to the schematic sectional view of the clamping apparatus 50 of an embodiment of the present utility model, 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 utility model is introduced, in each figure, identical reference number represents same or analogous parts.Should be understood that term " on ", D score, " making progress ", " downwards " directional terms be the description for the orientation shown in 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 to represent that this rod structure must be completely vertically or upright, but can relative level face or ground line so not vertically or upright, can tilt a little.Generally speaking, if not otherwise specified, term herein " interior ", " outward ", " inner side ", " outside " refer to the orientation with respect to column, and interior and inner side refers to position or the orientation at the center of more close or sensing column, and 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 being connected 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 being 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 any amount of two.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 shaped steel is connected to each other at any angle with respect to shaped steel.In specific embodiment, the longitudinal direction of batten plate 12 flatly arranges, and perpendicular to angle steel 14, arrange, and every four of the batten plate that connects four angle steel is arranged on same level height, the opening that makes to lead to lattice column inside is aligned with each other, forms the opening that runs through lattice column.The opening that runs through lattice column at least can allow horizontal support elements easily through lattice column at column and horizontal support elements intersection, and is connected with lattice column, to provide the support of horizontal direction for column.

Fig. 2 is the part schematic elevational view substantially showing according to the foundation ditch inner support system of an embodiment of the present utility model.Support system comprises column 2.Column 2 vertically extends, and the second column section 23 that comprises respectively from top to bottom the first column section 21 of being arranged in castinplace pile 22, intersects with base plate 24, and the third and fourth column section 25,27 alternately intersecting with floor plates 26 and horizontal support structure 28.Castinplace pile 22 comprises the reinforcing cage 221 arranging around the first column section 21, and together with reinforcing cage 221 being firmly attached to stratum with the first column section 21 by concrete perfusion.Base plate 24 is arranged on the tight top of castinplace pile 22, 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 every one deck 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, first, be bored into enough degree of depth downwards.Second step, is applicable to position by arriving in hand-hole under reinforcing cage and column.The 3rd step, fluid concrete in hole to form pile foundation.Require the concrete strength below stake top mark height will meet design strength requirement, general concrete has the super filling height (distance between the height of the relative castinplace pile end face of height of fluid concrete) of 0.5 meter to 2 meters.Thus, column is anchored in castinplace pile by pouring concrete.After this, can in hole, tamp the materials such as coarse sand, concrete, lime.After column setting completes, can excavate from top to bottom, and in permanent position, alternately arrange horizontal support elements and floor plates by design, finally at hole end bottom board.After having constructed, by order from the bottom up, column and horizontal support elements are removed successively.

Also, with reference to accompanying drawing 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 to interconnect.Column 2 is steel pipe section with the section of floor plates intersection, and is provided with clamping apparatus 50, and steel pipe section is connected with respective storey plate by clamping apparatus 50.The section that column 2 is connected with horizontal support elements is 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 steel pipe section with each floor plates intersection in the embodiment shown, this is not necessary.On the other hand, although column 2 is all 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 steel pipe section in all and floor plates intersection, can not be also all by being connected according to clamping apparatus of the present utility model between all steel pipe sections and floor plates.

Fig. 3 a shows according to the schematic plan of the exemplary termination connecting elements 30 of an embodiment of the present utility model, and Fig. 3 b shows the schematic sectional view of the termination connecting elements 30 being connected with 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 greater than for periphery any shape of the periphery that is connected section.Periphery herein refers to that more greatly, when end plate 32 is connected to the section that this is connected, the periphery of end plate is surrounded the periphery that is connected section.On end plate 32, there is geometric form perforate 36.This perforate 36 is less than and is connected the region that the inner surface of section limits, and that is to say, when end plate is connected to the inner side that this perforate while 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.In effect, preferably the whole end of column and the solid section of end plate (non-perforate part) contact.In the embodiment shown, end plate is the square or round plate corresponding to steel pipe shape.End plate thickness can, within the scope of 6mm-40mm, be 10mm in the embodiment shown.Floor 34 thickness are within the scope of 6mm-20mm, to be 10mm in the embodiment shown.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).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 according to the exemplary sectional view of the steel pipe section 40 with internal lining pipe 42 of an embodiment of the present utility model.Between steel pipe section 40 and internal lining pipe 42, be provided with interleaving agent 44.Internal lining pipe 42 cross sectional shapes are preferably and the matched circle of steel pipe 40 or square.That is to say, when steel pipe is round steel pipe, internal lining pipe 42 is correspondingly circular, and when steel pipe is rectangular steel tube, internal lining pipe 42 is correspondingly square.

Between the inwall of the outer wall of internal lining pipe and steel pipe parts, leave certain interval.This gap is preferably within the scope of 1mm-5mm.For example, when steel pipe is circle, the external diameter of internal lining pipe 42 is slightly less than the internal diameter of steel pipe 40, so that internal lining pipe 42 can be easily inserted in 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 (such as plant paraffin, animal paraffin, synthetic paraffin, microcrystalline wax, Tissuemat E) or powder release agent (such as talcum, mica, potter's clay, white clay etc.).Release agent layer can be for being independent of interior lining panel and steel pipe and being in use arranged on release agent layer between the two in this case.Yet applicant finds most advantageously to adopt concrete parting agent under study for action, spread upon construction with on internal lining pipe external surface or on steel pipe internal-surface, so that pouring concrete rear inner lining pipe is unlikely because concrete binding is difficult for removing to steel pipe internal-surface.Therefore, this release agent layer can be also the barrier coat being coated on interior lining panel external surface and/or steel pipe internal-surface, for example concrete parting agent coating as above.

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, make when mounted flange be out of shape a little and pack in steel pipe, thereby after being in place, flange sets back internal lining pipe is remained to steel pipe.The setting of flange also helps the space that forms accommodating interleaving agent, so that interleaving agent is remained in the space being limited by flange, internal lining pipe and steel tube place.The part that the end plate of tip member extends to steel pipe inner side also can be used to keep internal lining pipe, and this tip member is for being connected to steel pipe section other sections of column.Alternatively, internal lining pipe can be provided with at least one radially outer elastic bumps, this elastic bumps when internal lining pipe inserts steel pipe, elastic deformation under the effect of steel pipe internal-surface and utilize local friction to coordinate internal lining pipe is held in place.In a word, keeping structure can be any structure it is contemplated that, as long as it can remain on internal lining pipe in steel pipe, and after finishing using, can allow internal lining pipe easily from steel pipe, to be removed, so that the recycling of steel pipe.

Internal lining pipe can adopt any material to make.Under study for action, applicant finds to adopt the material with high-expansion can prevent better that the material expansion that internal lining pipe holds due to inside in grouting and the mixed earth process of filling from causing breaking.Therefore, the material of internal lining pipe can be preferably any in plastic material, particularly thermoplastic, composite material, fibrous material, foamed material etc. and combination thereof.The wall thickness of internal lining pipe 42 can be within the scope of 1mm-20mm.

Fig. 5 a shows according to the schematic sectional view of the clamping apparatus 50 of an embodiment of the present utility model, and Fig. 5 b shows the schematic sectional view of another embodiment of clamping apparatus 60.Clamping apparatus 50 can removably be fixedly attached to lattice column section periphery, and clamping apparatus 60 can removably be fixedly attached to the periphery of steel pipe section, and all there are a plurality of arms that stretch out, for being poured into floor plates, clamping apparatus is fixedly connected with floor plates.

Particularly, referring to Fig. 5 a, clamping apparatus 50 comprises the first slender member 52 and the second slender member 54.The relative two sides of the first and second slender members 52,54 laminating lattice columns, and by a plurality of bolton connect together.Particularly, the first and second slender members 52,54 comprise respectively corresponding perforate, and bolt is through these perforates and apply clamping force so that the first and second slender members 52,54 are clamped to respectively described two opposite side surfaces.The periphery that the two ends of the first and second slender members 52,54 exceed lattice column section stretches out, and forms corresponding four and stretches out arm 56.Thus, in the time of on being fastened to lattice column, each end of the first and second slender members 52,54 can be cast in floor plates, thereby lattice column section is secured to floor plates.In the embodiment shown, clamping apparatus 50 also comprises the third and fourth slender member, and it is identical with the first and second slender members 52,54, but clamps and be fixed to another two relative sides of lattice column.It is adjacent with the first and second slender members 52,54 that the third and fourth slender member is set to.That is to say, the third and fourth slender member is oriented to and the first and second slender members 52,54 cardinal principle quadratures, and is tightened to this another two relative sides by bolt clip.In illustrated embodiment, clamping apparatus 50 comprises the first, second, third and the 4th slender member, but this is not necessary, clamping apparatus can only include two (first and second or third and fourth) slender members, thereby it has four and stretches out arm, or can comprise more slender members.

Referring to Fig. 5 b, clamping apparatus 60 is for releasably fastening to round steel pipe, and comprises the first curved section 62 and the second curved section 64.The first and second curved section 62,64 are arranged in the periphery of round steel pipe, and the clamping force applying by bolt is clamped to round steel pipe.Particularly, the first and second curved section 62,64 two ends comprise respectively the perforation of aligning, wherein bolt passes these holes by the first and second curved section 62,64 connect and pull to each other, thereby apply clamping force, the first and second curved section 62,64 are clamped on round steel pipe.Clamping apparatus 60 also comprises a plurality of arms 66 that stretch out, and it is connected to the first and second curved section 62,64 protruding from it.Stretch out arm 66 and can be fixedly attached to the first and second curved section 62,64 by modes such as welding, riveted joint, machanical fasteners (such as being threaded etc.).Similarly, stretching out arm 66 can be cast in floor plates, thereby steel pipe section is secured to floor plates.

Snap fit onto steel pipe section is two kinds of diverse schemes with the clamping apparatus that snaps fit onto lattice column section for those skilled in the art.Compare with snapping fit onto steel pipe section, the clamping apparatus that snaps fit onto lattice column section is higher to the requirement of position and contact surface.The card access surface of clamping apparatus is preferably alignd with the batten plate of lattice column, to obtain larger contact area, makes lattice column stressed more even.

Although show each concrete embodiment herein, they are not restrictive.Those skilled in the art can expect implementing various substitute mode of the present utility model or modification under design of the present utility model.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 column section, and provides protruding to be poured into the arm in floor plates.Each feature is described in different embodiment and does not represent that they can not be combined, and each feature in each embodiment can combination with one another arrive enforcement together, to realize more favourable effect.

Claims (7)

1. a pillar construction, for building foundation pit supporting system, it is characterized in that, this pillar construction is comprising lattice column section with at least one floor plates intersection, described pillar construction also comprises clamping apparatus, described clamping apparatus is removably fixedly attached to lattice column section and comprises a plurality of arms that stretch out, the described arm that stretches out can be poured into and in floor plates, makes clamping apparatus, and lattice column section is fixedly attached to floor plates thus, wherein said clamping apparatus comprises installation portion, described installation portion comprises a plurality of installation sections that connect together by machanical fastener, the pulling force that described a plurality of section applies by described machanical fastener clamps on the periphery that is fixed on lattice column section.

2. pillar construction as claimed in claim 1, it is characterized in that, this pillar construction comprises at least one lattice column section and at least one steel pipe section, wherein said each lattice column section is together with in steel pipe section at least two are fixedly attached to by tip member, described tip member comprises that central authorities are with the end plate of perforate, a plurality of the first floors and a plurality of the second floor, the end of wherein said at least two sections is connected by welding to end plate, wherein said the first and second floors are connected to respective section by welding by end plate with the second relative side in the first side of end plate respectively.

3. pillar construction as claimed in claim 2, is characterized in that, described floor comprises the first edge that is welded to end plate and the second edge that is welded to respective section side.

4. pillar construction as claimed in claim 2 or claim 3, is characterized in that, described the first and second floors are spaced apart around the circumferential equal angles of respective section ground respectively.

5. pillar construction as claimed in claim 2, it is characterized in that, 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, described internal lining pipe is provided with the maintaining body that it is removably remained to steel duct.

6. pillar construction as claimed in claim 1, is characterized in that, described a plurality of installation sections are linear segments, and described machanical fastener is bolt fastener.

7. a building foundation pit supporting system, is characterized in that, described building foundation pit supporting system comprises the pillar construction described in any one in as above claim.

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