CN116676988A - Deep foundation pit assembled section steel supporting structure - Google Patents

Abstract

The application relates to a deep foundation pit assembly type steel support structure, which belongs to the field of foundation pit support, and comprises lattice columns, plug-in sleeves, a steel beam and an enclosing purlin, wherein the plug-in sleeves are arranged on the lattice columns in a plug-in manner; two limiting plates are symmetrically arranged at the top of the plug bush, clamping grooves are formed in the two limiting plates, and clamping plates are arranged in the clamping grooves; the section steel beam is arranged on the plug bush and is positioned between the two limiting plates, a plurality of limiting bolts are arranged on the clamping plate, and the limiting bolts penetrate through the clamping plate and are in threaded connection with the section steel beam; enclose the purlin setting on the lateral wall of foundation ditch, shaped steel roof beam and enclose the purlin and can dismantle the connection. When the staff dismantles the connected node of shaped steel roof beam and lattice column, remove the shaped steel roof beam and enclose the purlin and be connected, twist again and move spacing bolt and make spacing bolt keep away from the shaped steel roof beam, then take away the joint board, can harmless the removing of shaped steel roof beam, easily cause the impaired problem of girder steel when effectively improving the connected node of dismantlement girder steel and stand.

Description

Deep foundation pit assembled section steel supporting structure

Technical Field

The application relates to the field of foundation pit support, in particular to a deep foundation pit assembled steel support structure.

Background

The foundation pit support is used for guaranteeing the safety of underground structure construction and surrounding environment of the foundation pit, and supporting, reinforcing and protecting measures are adopted for the side wall and surrounding environment of the foundation pit, and along with the development of an assembled structure in recent years, the steel support is increasingly applied to the foundation pit support, and the original reinforced concrete support structure is gradually replaced due to the series of advantages of low manufacturing cost, recoverable materials, high construction speed and the like of the steel support.

At present, steel supports are usually arranged on an enclosing purlin on the side wall of a foundation pit through steel beams, the enclosing purlin is supported through the steel beams, and then the steel beams are supported through upright posts, so that the lattice columns are widely applied to the foundation pit support due to the characteristics of strong bending resistance, material saving, no maintenance, short construction period and the like, a great deal of welding work is required to be assisted when the lattice columns are connected with the steel beams, the connection strength of the steel beams and the lattice columns is ensured by adopting a welding connection method, the disassembly difficulty is increased when the steel beams are disassembled later, the steel beams are damaged easily, and the steel beams are reused.

Disclosure of Invention

In order to solve the problem that steel beams are easy to damage when connecting nodes of the steel beams and the upright posts are disassembled, the application provides a deep foundation pit assembled type steel support structure.

The application provides a deep foundation pit assembled steel support structure, which adopts the following technical scheme:

the deep foundation pit assembled steel support structure comprises lattice columns, plug sleeves, steel beams and enclosing purlins, wherein the plug sleeves are hollow in the interior and are arranged with one end open, and the plug sleeves are arranged on the lattice columns in a plug manner; two limiting plates are symmetrically arranged at the top of the plug bush, the distance between the two limiting plates is the same as the width of the section steel beam, clamping grooves are formed in the two limiting plates, and clamping plates are arranged in the clamping grooves; the section steel beam is arranged on the plug bush and is positioned between the two limiting plates, a plurality of limiting bolts are arranged on the clamping plate, and the limiting bolts penetrate through the clamping plate and are in threaded connection with the section steel beam; the enclosing purlin sets up on the lateral wall of foundation ditch, the shaped steel roof beam can be dismantled with the enclosing purlin and be connected.

Through adopting above-mentioned technical scheme, the staff installs the lattice column in advance in to the foundation ditch, then remove the plug bush and make the top of lattice column insert in the plug bush, hoist and mount the shaped steel roof beam to between two limiting plates, then remove the joint board, make the joint board card go into two draw-in grooves, twist the stop bolt on the joint board again, make stop bolt penetrate in the shaped steel roof beam, then install the both ends of shaped steel roof beam respectively on enclosing purlin on the foundation ditch lateral wall, can accomplish foundation ditch supporting structure's installation, when dismantling the connected node of shaped steel roof beam and lattice column, remove the shaped steel roof beam and enclose the purlin be connected, twist again and make stop bolt keep away from the shaped steel roof beam, then take away the joint board, can dismantle the shaped steel roof beam nondestructively, easily cause the impaired problem of girder steel when effectively improving the connected node of dismantlement girder and stand.

Optionally, be provided with the spacing subassembly that is used for restricting the plug bush and remove on the lattice column on the plug bush, spacing subassembly is including holding cover, screw rod and inserted block, hold the cover intercommunication setting on the lateral wall of plug bush, the screw rod rotates the setting and holds the cover, the inserted block slides and sets up in holding the cover, inserted block and screw rod threaded connection, just the cross-section size of inserted block is the same with the side opening size of lattice column.

Through adopting above-mentioned technical scheme, after the staff installs the plug bush to the lattice post, rotate the screw rod for the plug block is in holding the cover and is slided to the direction that is close to the lattice post, makes the plug block card go into the opening of lattice post side, can fix the plug bush on the lattice post, effectively promotes the steadiness that the plug bush is located the lattice post.

Optionally, a turntable is rotatably arranged on the plug bush, and the two limiting plates are both arranged on the turntable; the rotary table is provided with a bolt, the bolt is slidably inserted on the rotary table, a plurality of slots for being in inserted fit with the bolt are formed in the plug bush, and a plurality of slots are formed in the plug bush at intervals in the circumferential direction of the rotating path of the bolt.

Through adopting above-mentioned technical scheme, after the staff installs the cover of pegging graft on the lattice post, rotate the carousel for two limiting plates are towards the required direction of installing of shaped steel roof beam, then insert the bolt in the slot that corresponds, restrict the rotation of carousel, install the shaped steel roof beam to between two limiting plates this moment, can make shaped steel roof beam towards required installation direction, realize the angle modulation of installation shaped steel roof beam.

Optionally, set up the bracing mechanism that is used for providing extra support for the shaped steel roof beam on the lattice column, bracing mechanism includes and accepts cover, stiffening beam and clamping assembly, accept the cover setting on the lattice column, stiffening beam rotates and sets up on the shaped steel roof beam, clamping assembly sets up on accepting the cover and is used for keeping away from the one end of shaped steel roof beam with stiffening beam and fixes on accepting the cover.

Through adopting above-mentioned technical scheme, the staff will accept the cover and install to the lattice column, then adjusts the angle of shaped steel roof beam, and rethread stiffening beam for stiffening beam and shaped steel roof beam are located the coplanar, and in the one end that shaped steel roof beam was kept away from to stiffening beam was installed to accepting the cover again, and fix stiffening beam to accepting the cover through the clamping assembly, stiffening beam carries out extra support to shaped steel roof beam this moment, effectively promotes the steadiness of shaped steel roof beam.

Optionally, the clamping assembly includes telescopic link and splint, the length of telescopic link is scalable, the telescopic link all is provided with a plurality ofly on two opposite inside walls of accepting the cover, splint hinge on a plurality of telescopic link and are provided with two, two splint are relative setting.

Through adopting above-mentioned technical scheme, after the staff installs the stiffening beam to the socket, adjust the length of a plurality of telescopic links for two splint support the both sides of stiffening beam respectively tightly, can press from both sides the stiffening beam tightly in the socket, and through the length of adjusting the different telescopic links of accepting on the same inside wall of socket, realize the adjustment of splint angle, make the inclination of splint adapt to the inclination of different stiffening beams.

Optionally, the telescopic link includes accomodates cover, slide bar and lead screw, accomodate the cover setting on accepting the lateral wall of cover, accomodate the inside cavity of cover and one end opening setting, the slide bar slides and sets up in accomodating the cover, the slide bar is articulated with splint, the lead screw rotates the setting and is being accomodate the cover, just lead screw and slide bar threaded connection.

Through adopting above-mentioned technical scheme, the staff rotates the lead screw, can make the slide bar to keeping away from the direction slip of accomodating the cover in accomodating the cover, and then makes splint to being close to the direction removal of stiffening beam, and splint support the stiffening beam tightly, and the staff reverse rotation lead screw for the slide bar is to being close to the direction removal of accomodating the cover, can make splint keep away from the stiffening beam, releases the clamp to the stiffening beam.

Optionally, a connecting sleeve is arranged on the enclosing purlin, and the section steel beam is in plug-in fit with the connecting sleeve; and the connecting sleeve is provided with a clamping assembly for limiting the section steel beam in the connecting sleeve.

Through adopting above-mentioned technical scheme, the staff inserts the shaped steel roof beam in the adapter sleeve, then restricts the shaped steel roof beam in the adapter sleeve through joint subassembly, can accomplish the shaped steel roof beam and enclose the connection of purlin, effectively promotes the staff and installs the shaped steel roof beam to enclose the convenience on the purlin.

Optionally, the clamping assembly includes a spring, a clamping block and a pull rod, the side wall of the connecting sleeve is provided with a containing part in a communicating manner, the spring is arranged on the inner wall of the containing part, the clamping block is slidably arranged in the containing part, the clamping block is connected with the spring, the spring always has a trend of driving the clamping block to partially slide out from the inside of the containing part, the pull rod is slidably arranged on the containing part, and the pull rod extends into the containing part and is connected with the clamping block; and the section steel beam is provided with a clamping sleeve which is used for being in plug-in fit with the clamping block.

Through adopting above-mentioned technical scheme, the staff inserts the in-process in the adapter sleeve with the shaped steel roof beam, and the precursor makes the fixture block slide into in the adapter sleeve, and in the shaped steel roof beam continued to insert the adapter sleeve for the joint cover is relative with the adapter sleeve, and the fixture block partially slides out from in the adapter sleeve under the effect of spring, and partially slides into in the joint cover, can restrict the shaped steel roof beam in the adapter sleeve, promotes the steadiness that the shaped steel roof beam is located the adapter sleeve.

Optionally, the one end that shaped steel roof beam is close to enclosing the purlin is provided with the bracing beam through the bolt, the one end that shaped steel roof beam was kept away from to the bracing beam can dismantle the setting on enclosing the purlin.

Through adopting above-mentioned technical scheme, the bracing roof beam provides extra support for enclosing the purlin, increases the shaped steel roof beam to the strong point of enclosing the purlin, and then strengthens enclosing the purlin to the bearing capacity of soil pressure.

Optionally, a steel cable is arranged on the enclosing purlin, and the steel cable is connected with the section steel beam.

By adopting the technical scheme, the steel cable exerts tension on the section steel beam, so that the bearing capacity of the section steel beam is enhanced, and the bending moment resistance of the section steel beam is improved.

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

1. when the connection node of the section steel beam and the lattice column is disassembled, the limit bolt is screwed to enable the limit bolt to be far away from the section steel beam, then the clamping plate is taken away, the section steel beam can be disassembled in a lossless manner, and the problem that the steel beam is easy to damage when the connection node of the steel beam and the upright column is disassembled is effectively solved;

2. the staff rotates the rotary table to enable the two limiting plates to face the direction of the required installation of the section steel beam, then inserts the bolts into the corresponding slots to limit the rotation of the rotary table, and at the moment, the section steel beam is installed between the two limiting plates, so that the section steel beam faces the required installation direction, and the angle adjustment of the section steel beam is realized;

3. the staff adjusts the length of a plurality of telescopic links for two splint support the both sides of stiffening beam tightly respectively, can press from both sides stiffening beam tightly in accepting the cover, and through the adjustment accepting the length of the different telescopic links on the same inside wall of cover, realize the adjustment of splint angle, make the inclination of splint adapt to the inclination of different stiffening beams.

Drawings

Fig. 1 is a schematic structural view of a deep foundation pit assembled steel section supporting structure according to an embodiment of the present application.

Fig. 2 is an exploded view of the socket and the turntable according to the embodiment of the present application.

Fig. 3 is a partial cross-sectional view of an embodiment of the present application (one diagonal strut is hidden in the figure).

Fig. 4 is an enlarged partial schematic view of the portion a in fig. 3.

Fig. 5 is a partially enlarged schematic view of the portion B in fig. 3.

Fig. 6 is an enlarged partial schematic view of the portion C in fig. 3.

Reference numerals: 1. lattice columns; 2. a plug bush; 21. a slot; 3. a section steel beam; 4. enclosing purlin; 5. a limiting plate; 51. a clamping groove; 6. a clamping plate; 7. a limit bolt; 8. a limit component; 81. a receiving sleeve; 82. a screw; 83. inserting blocks; 9. a turntable; 10. a plug pin; 11. a diagonal bracing mechanism; 111. a receiving sleeve; 112. a stiffening beam; 113. a clamping assembly; 1131. a telescopic rod; 11311. a storage sleeve; 11312. a slide bar; 11313. a screw rod; 1132. a clamping plate; 12. connecting sleeves; 121. a housing part; 13. a clamping assembly; 131. a spring; 132. a clamping block; 133. a pull rod; 14. a clamping sleeve; 15. a diagonal bracing beam; 16. and (5) a steel rope.

Detailed Description

The application is described in further detail below with reference to fig. 1-6.

The embodiment of the application discloses a deep foundation pit assembled steel support structure.

Referring to fig. 1, the deep foundation pit assembly type steel support structure comprises lattice columns 1, plug bushes 2, a steel section beam 3 and an enclosing purlin 4.

Referring to fig. 1 and 2, the interior of the plug bush 2 is hollow and is provided with an opening at the bottom, the size of the opening at the bottom of the plug bush 2 is the same as the size of the cross section of the lattice column 1, and the plug bush 2 is plugged at the top of the lattice column 1; the top of the plug bush 2 is rotatably provided with a rotary table 9, the rotary table 9 is provided with bolts 10, the bolts 10 are slidably inserted on the rotary table 9, the plug bush 2 is provided with a plurality of slots 21 for being matched with the bolts 10 in a plug manner, the plurality of slots 21 are circumferentially arranged on the plug bush 2 at intervals along the rotating path of the bolts 10, in the embodiment, the bolts 10 are slidably inserted on the rotary table 9, and the distances between the four bolts 10 and the rotating shaft center of the rotary table 9 are the same; the top of the turntable 9 is symmetrically and fixedly provided with two limiting plates 5, the distance between the two limiting plates 5 is the same as the width of the profiled steel beam 3, the tops of the two limiting plates 5 are provided with clamping grooves 51, the limiting plates 5 are provided with clamping plates 6, and two ends of the clamping plates 6 are respectively positioned in the two clamping grooves 51; the shaped steel beam 3 is installed on the two plug bushes 2, the shaped steel beam 3 is located between the two limiting plates 5, a plurality of limiting bolts 7 are installed on the clamping plates 6, the limiting bolts 7 penetrate through the clamping plates 6 and are connected to the shaped steel beam 3 in a threaded mode, and in the embodiment, the limiting bolts 7 penetrate through the clamping plates 6 and are connected to the limiting plates 5 in a threaded mode; the enclosing purlin 4 is arranged on the enclosing pile of the side wall of the foundation pit, and two ends of the section steel beam 3 are respectively connected with the enclosing purlins 4 on the two opposite side walls of the foundation pit in a detachable mode.

The staff installs the lattice column 1 to the bottom of the foundation pit in a welding or pre-embedding mode, installs the enclosing purlin 4 to the guard piles on the side wall of the foundation pit through bolts, then moves the plug bush 2 to enable the plug bush 2 to be sleeved on the top of the lattice column 1, then detects the perpendicularity between the limiting plate 5 and the enclosing purlin 4 through a measuring instrument, rotates the rotary table 9, adjusts the perpendicularity between the limiting plate 5 and the enclosing purlin 4, inserts four bolts 10 from the rotary table 9 into corresponding insertion holes on the plug bush 2 respectively, so as to limit the movement of the rotary table 9, then lifts the section steel beam 3 onto the rotary table 9, enables the two limiting plates 5 to be respectively abutted on two sides of the section steel beam 3, realizes the adjustment of the installation angle of the section steel beam 3, and can promote the perpendicularity between the section steel beam 3 and the enclosing purlin 4 even if the installation angle of the lattice column 1 has errors, and further promotes the supporting effect of the section steel beam 3 on the enclosing purlin 4; then block into two draw-in grooves 51 respectively with the both ends of joint board 6, twist spacing bolt 7, make a plurality of spacing bolts 7 screw thread respectively on girder steel 3 and limiting plate 5, be connected to the both ends of girder steel 3 respectively on enclosing purlin 4 on two opposite lateral walls of foundation ditch simultaneously, can accomplish foundation ditch supporting structure's installation, when dismantling girder steel 3 in the follow-up, only need remove girder steel 3 and enclosing purlin 4's connection, then screw out a plurality of spacing bolts 7, take away joint board 6, can follow the girder steel 3 and harmless dismantlement on the lattice column 1, easily cause the impaired problem of girder steel when effectively improving the connected node of dismantlement girder steel and stand.

Referring to fig. 1 and 3, a steel cable 16 is installed on the enclosing purlin 4, one end of the steel cable 16, far away from the enclosing purlin 4, is connected to the section steel beam 3, in this embodiment, two connecting sleeves 12 are installed at two ends of the steel cable 16, two connecting sheets are symmetrically installed on the connecting sleeves 12, connecting lugs are installed on the enclosing purlin 4 and the section steel beam 3, two connecting sheets on the connecting sleeves 12 are clamped to two sides of the connecting lugs by workers, then bolts penetrate through the connecting sheets and the connecting lugs, nuts are screwed on the other ends of the bolts, and installation of the steel cable 16 can be achieved. The steel cable 16 is used for applying tension to the section steel beam 3, so that the bearing capacity of the section steel beam 3 is enhanced, the bending moment resistance of the section steel beam 3 is further improved, the downward bending resistance of the section steel beam 3 is improved through the steel cable 16, the consumption of the lattice column 1 can be reduced, and more operation space is provided for foundation pit construction.

Referring to fig. 3 and 4, a connecting sleeve 12 is mounted on the enclosing purlin 4 through bolts, the end part of the section steel beam 3 is in plug-in fit with the connecting sleeve 12, in the embodiment, one side of the connecting sleeve 12 close to the section steel beam 3 and the top of the connecting sleeve 12 are both provided with openings, so that workers can conveniently hoist the end part of the section steel beam 3 into the connecting sleeve 12; the connecting sleeve 12 is provided with a clamping assembly 13 for limiting the end part of the shaped steel beam 3 in the connecting sleeve 12, the clamping assembly 13 comprises a spring 131, a clamping block 132 and a pull rod 133, the side wall of the connecting sleeve 12 is provided with a containing part 121, the containing part 121 is hollow and communicated with the inside of the connecting sleeve 12, the clamping block 132 is slidably arranged in the containing part 121, one end of the spring 131 is arranged on the inner wall of the containing part 121 opposite to the connecting sleeve 12, the other end of the spring 131 is arranged on the clamping block 132, the spring 131 always has a trend of driving the clamping block 132 to slide out of the part of the containing part 121, the shaped steel beam 3 is provided with a clamping sleeve 14 which is hollow inside and is open towards one end of the clamping block 132, the opening side of the clamping sleeve 14 is opposite to the clamping block 132, and in the embodiment, the clamping block 132 is far away from the containing part 121 and one end close to the steel cable 16 is provided with an arc surface, so that when the shaped steel beam 3 is inserted into the connecting sleeve 12, the shaped steel beam 3 is abutted with the arc surface of the clamping block 132, and the shaped steel beam 132 can be extruded into the containing part 121; the pull rod 133 is slidably mounted on the opposite side wall of the accommodating portion 121 opposite to the connecting sleeve 12, and the pull rod 133 extends into the accommodating portion 121 and is connected with the clamping block 132.

When the shaped steel beam 3 is hoisted by a worker, the shaped steel beam 3 is hoisted into the connecting sleeve 12 from the top of the connecting sleeve 12, the arc-shaped surface of the shaped steel beam 3 and the clamping block 132 are abutted in the hoisting process, the clamping block 132 is extruded into the accommodating part 121, then the shaped steel beam 3 can continuously descend, the working process that the clamping block 132 slides into the accommodating part 121 because the worker continuously pulls the pull rod 133 in the descending process of the shaped steel beam 3 is avoided, when the shaped steel beam 3 descends to be abutted with the connecting sleeve 12, the clamping block 132 is opposite to the opening of the clamping sleeve 14, the clamping sleeve 14 slides out of the inner part of the accommodating sleeve 81 under the action of the spring 131 and is clamped into the clamping sleeve 14, the connection between the shaped steel beam 3 and the enclosing purlin 4 can be completed, the whole connecting process is convenient and quick, the worker does not need to excessively operate, and when the shaped steel beam 3 is required to be dismounted from the connecting sleeve 12, the worker pulls the pull rod 133 to a direction far away from the accommodating part 121, and the pull rod 133 drives the clamping block 132 to slide into the accommodating part 121 from the clamping sleeve 14, and the shaped steel beam 3 can be hoisted directly from the connecting sleeve 12.

Referring to fig. 3 and 5, two diagonal bracing beams 15 are mounted at two ends of the section steel beam 3 through bolts, the two diagonal bracing beams 15 are respectively located at two sides of the section steel beam 3, one end, away from the section steel beam 3, of the diagonal bracing beam 15 is detachably mounted on the enclosing purlin 4, in this embodiment, a clamping sleeve 14 is also mounted on the diagonal bracing beam 15, a connecting sleeve 12 is also mounted at the joint of the enclosing purlin 4 and the diagonal bracing beam 15, and after the diagonal bracing beam 15 is clamped into the connecting sleeve 12, the diagonal bracing beam 15 is also fixed in the connecting sleeve 12 through a clamping assembly 13 on the connecting sleeve 12. After the staff installs shaped steel roof beam 3 to enclosing purlin 4, install the one end of bracing roof beam 15 again on shaped steel roof beam 3, the other end is installed to enclosing purlin 4 on, provide extra support for enclosing purlin 4 through bracing roof beam 15, through the mode of reinforcing shaped steel roof beam 3 to enclosing purlin 4 for the peripheral soil pressure of foundation ditch can more even transfer to shaped steel roof beam 3 on, and then effectively strengthen the bearing capacity of enclosing purlin 4 to the peripheral soil pressure of foundation ditch.

Referring to fig. 3 and 6, diagonal bracing mechanisms 11 are mounted on two opposite side walls of the lattice column 1 and the section steel beam 3, the diagonal bracing mechanisms 11 are used for providing additional support for the diagonal bracing beams 15, each diagonal bracing mechanism 11 comprises a bearing sleeve 111, a reinforcing beam 112 and a clamping assembly 113, the bearing sleeves 111 are mounted on the side walls of the lattice column 1, the tops of the bearing sleeves 111 and one sides of the bearing sleeves away from the lattice column 1 are both opened, one ends of the reinforcing beams 112 are rotatably mounted on the section steel beam 3, the other ends of the reinforcing beams 112 are mounted in the bearing sleeves 111, in this embodiment, the reinforcing beams 112 are rotatably mounted on the section steel beam 3 through pins, a plurality of bolts are mounted at one ends of the reinforcing beams 112 close to the section steel beam 3, the distances between the bolts and the pins are the same, the bottoms of the section steel beam 3 take the pins as circle centers, the distances between the bolts and the pins are the radiuses, and a plurality of threaded holes are circumferentially spaced, so that after the reinforcing beams 112 rotate, the bolts on the reinforcing beams 112 can still penetrate into other threaded holes through threads, and the reinforcing beams 112 after adjusting angles are fixed.

The clamping assembly 113 is mounted on the bearing sleeve 111, the clamping assembly 113 is used for fixing one end of the reinforcing beam 112, which is located in the bearing sleeve 111, the clamping assembly 113 comprises a telescopic rod 1131 and a clamping plate 1132, the length of the telescopic rod 1131 is telescopic, a plurality of telescopic rods 1131 are mounted on two opposite side walls of the bearing sleeve 111, the telescopic rods 1131 are located on the same horizontal plane on the same side wall of the bearing sleeve 111, the telescopic rod 1131 comprises a storage sleeve 11311, a sliding rod 11312 and a screw 11313, the storage sleeve 11311 is mounted on the side wall of the bearing sleeve 111, the inside of the storage sleeve 11311 is hollow and is arranged towards one end opening of the reinforcing beam 112, the sliding rod 11312 is slidably mounted in the storage sleeve 11311, the screw 11313 is mounted on the storage sleeve 11311 in a threaded manner, and the screw 11313 extends into the storage sleeve 11311 and is in threaded connection with the sliding rod 11312; the clamping plates 1132 are respectively installed on the plurality of sliding rods 11312 on the two side walls of the receiving sleeve 111, the clamping plates 1132 are hinged with the sliding rods 11312 towards the length direction of the reinforcing beam 112, in the embodiment, rubber plates are installed at the ends, close to each other, of the two clamping plates 1132, friction force between the clamping plates 1132 and the reinforcing beam 112 is enhanced by the rubber plates, and therefore stability of clamping of the reinforcing beam 112 by the clamping plates 1132 is enhanced.

After a worker installs the section steel beam 3 on the turntable 9, the reinforcing beam 112 is rotationally installed to the bottom of the section steel beam 3 through a pin shaft, then the reinforcing beam 112 is rotated, one end of the reinforcing beam 112, which is far away from the section steel beam 3, is clamped into the bearing sleeve 111, then a plurality of bolts, which are close to one end of the section steel beam 3, of the reinforcing beam 112 are respectively screwed into threaded holes formed in the bottom of the section steel beam 3, the rotation of the reinforcing beam 112 on the section steel beam 3 is limited, then the screw 11313 is rotated, so that the sliding rod 11312 slides in the storage sleeve 11311 towards the direction, which is close to the storage sleeve 11311 or is far away from the storage sleeve 11311, and the inclination angle of the clamping plate 1132 in the bearing sleeve 111 can be adjusted by adjusting the plurality of sliding rods 11312, so that the inclination angle of the clamping plate 1132 and the reinforcing beam 112 in the bearing sleeve 111 is consistent, the lamination of the clamping plate 1132 and the reinforcing beam 112 is realized, and the adaptation of the clamping plate 1132 to the reinforcing beam 112 in different angles of the bearing sleeve 111 is improved; by adjusting the length of the telescopic rod 1131, the two clamping plates 1132 clamp the reinforcing beam 112 in the receiving sleeve 111, so that the stability of the reinforcing beam 112 in the receiving sleeve 111 is improved; and carry out extra support to the girder steel through stiffening beam 112, increase lattice column 1 to the strong point of shaped steel roof beam 3, effectively promote lattice column 1 to the supporting effect of shaped steel roof beam 3.

Referring to fig. 3 and 6, a limiting component 8 is installed on the socket 2, the limiting component 8 is used for limiting the movement of the lattice column 1 on the socket 2, in this embodiment, one limiting component 8 is installed on two opposite side walls of the socket 2, so as to enhance the limiting effect on the movement of the socket 2; spacing subassembly 8 is including holding cover 81, screw rod 82 and inserted block 83, hold the cover 81 and install on the lateral wall of plug bush 2, hold the inside cavity of cover 81, and hold the one end that cover 81 is close to plug bush 2 and the inside intercommunication of plug bush 2, screw rod 82 rotates to be installed and holds the cover 81 and just to the lateral wall that cover 2 is right, and screw rod 82 extends to hold in the cover 81, inserted block 83 slidable mounting holds in the cover 81, inserted block 83 is located the one end threaded connection that holds the cover 81 with screw rod 82, and the cross-section size of inserted block 83 is the same with the opening size of the side of lattice column 1. After the staff is sleeved with the plug bush 2 into the top of the lattice column 1, the screw 82 is rotated, so that the plug block 83 slides in the accommodating sleeve 81 towards the direction close to the lattice column 1, and the plug block 83 is partially inserted into the side opening of the lattice column 1, and at the moment, the plug bush 2 is fixed on the lattice column 1, so that the stability of the plug bush 2 on the lattice column 1 is effectively improved.

The implementation principle of the deep foundation pit assembled steel support structure provided by the embodiment of the application is as follows: the staff installs the lattice column 1 into the foundation pit in advance, installs the enclosing purlin 4 onto the fender post of the side wall of the foundation pit, then moves the plug bush 2 to enable the top of the lattice column 1 to be inserted into the plug bush 2, rotates the rotary table 9, adjusts the verticality between the limiting plate 5 on the rotary table 9 and the enclosing purlin 4, then inserts the bolt 10 on the rotary table 9 into the slot 21 on the plug bush 2, namely, the section steel beam 3 can be hoisted, the section steel beam 3 is hoisted between the two limiting plates 5, then installs the clamping plate 6 into the clamping grooves 51 on the two limiting plates 5, screws the limiting bolts 7 on the clamping plate 6 into the section steel beam 3 and the limiting plates 5, two ends of the section steel beam 3 are respectively clamped into the connecting sleeve 12 in the hoisting process, the clamping blocks 132 on the connecting sleeve 12 are partially slid into the clamping sleeve 14 under the action of the springs 131, the section steel beam 3 is fixed in the connecting sleeve 12, then one end of the diagonal bracing beam 15 is mounted on the shaped steel beam 3 through bolts, the other end of the diagonal bracing beam is mounted in other connecting sleeves 12 on the enclosing purlin 4, one end of the reinforcing beam 112 is rotatably mounted on the shaped steel beam 3 through a pin shaft, the other end of the diagonal bracing beam is mounted in the receiving sleeve 111, after the angle of the reinforcing beam 112 is adjusted, the bolts on the reinforcing beam 112 are screwed into the shaped steel beam 3, the length of the telescopic rod 1131 on the receiving sleeve 111 is adjusted, two clamping plates 1132 clamp the reinforcing beam 112, finally one end of a steel cable 16 is mounted on the enclosing purlin 4, the other end of the steel cable 16 is mounted on the shaped steel beam 3, the mounting of a foundation pit supporting structure is completed, when the shaped steel beam 3 is required to be dismounted, the telescopic rod 1131 is shortened, the clamping of the clamping plates 1132 on the reinforcing beam 112 is released, then the limit bolts 7 on the clamping plates 6 are screwed out, the pull rods 133 are pulled, the clamping blocks 132 slide out of the clamping sleeves 14 on the shaped steel beam 3, the shaped steel beam 3 can be dismounted without damage, the problem that the steel beam is damaged easily when the connection node of the steel beam and the upright post is disassembled is solved.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (10)

1. The utility model provides a deep basal pit assembled shaped steel bearing structure which characterized in that: the steel structure comprises a lattice column (1), a plug bush (2), a section steel beam (3) and an enclosing purlin (4), wherein the interior of the plug bush (2) is hollow, one end of the plug bush is provided with an opening, and the plug bush (2) is arranged on the lattice column (1) in a plug manner; two limiting plates (5) are symmetrically arranged at the top of the plug bush (2), the distance between the two limiting plates (5) is the same as the width of the profile steel beam (3), clamping grooves (51) are formed in the two limiting plates (5), and clamping plates (6) are arranged in the clamping grooves (51); the section steel beam (3) is arranged on the plug bush (2) and positioned between the two limiting plates (5), a plurality of limiting bolts (7) are arranged on the clamping plate (6), and the limiting bolts (7) penetrate through the clamping plate (6) and are in threaded connection with the section steel beam (3); the enclosing purlin (4) is arranged on the side wall of the foundation pit, and the shaped steel beam (3) is detachably connected with the enclosing purlin (4).

2. The deep foundation pit fabricated section steel support structure of claim 1, wherein: the plug bush (2) is provided with a limiting component (8) for limiting the plug bush (2) to move on the lattice column (1), the limiting component (8) comprises a containing sleeve (81), a screw rod (82) and a plug block (83), the containing sleeve (81) is communicated with the side wall of the plug bush (2), the screw rod (82) rotates to be arranged on the accommodating sleeve (81), the insert block (83) is arranged in the accommodating sleeve (81) in a sliding mode, the insert block (83) is in threaded connection with the screw rod (82), and the size of the section of the insert block (83) is the same as the size of the side opening of the lattice column (1).

3. The deep foundation pit fabricated section steel support structure of claim 1, wherein: a turntable (9) is rotatably arranged on the plug bush (2), and the two limiting plates (5) are arranged on the turntable (9); the rotary table (9) is provided with a bolt (10), the bolt (10) is inserted on the rotary table (9) in a sliding mode, a plurality of slots (21) used for being in plug-in fit with the bolt (10) are formed in the plug-in sleeve (2), and the slots (21) are formed in the plug-in sleeve (2) at intervals in the circumferential direction of a rotating path of the bolt (10).

4. The deep foundation pit fabricated section steel support structure of claim 1, wherein: the utility model provides a lattice column (1) is last to be used for providing bracing mechanism (11) that extra supported for shaped steel roof beam (3), bracing mechanism (11) are including receiving cover (111), stiffening beam (112) and clamping assembly (113), receiving cover (111) set up on lattice column (1), stiffening beam (112) rotate and set up on shaped steel roof beam (3), clamping assembly (113) set up on receiving cover (111) and are used for keeping away from one end of shaped steel roof beam (3) with stiffening beam (112) and fix on receiving cover (111).

5. The deep foundation pit fabricated section steel support structure of claim 4, wherein: clamping component (113) are including telescopic link (1131) and splint (1132), the length of telescopic link (1131) is scalable, telescopic link (1131) all is provided with a plurality ofly on two opposite inside walls of accepting cover (111), splint (1132) are articulated to be provided with two on a plurality of telescopic link (1131), two splint (1132) are relative setting.

6. The deep foundation pit fabricated section steel support structure of claim 5, wherein: the telescopic rod (1131) comprises a storage sleeve (11311), a sliding rod (11312) and a screw rod (11313), wherein the storage sleeve (11311) is arranged on the side wall of the receiving sleeve (111), the storage sleeve (11311) is hollow and is provided with an opening at one end, the sliding rod (11312) is arranged in the storage sleeve (11311) in a sliding mode, the sliding rod (11312) is hinged to the clamping plate (1132), the screw rod (11313) is arranged on the storage sleeve (11311) in a rotating mode, and the screw rod (11313) is in threaded connection with the sliding rod (11312).

7. The deep foundation pit fabricated section steel support structure of claim 1, wherein: the enclosing purlin (4) is provided with a connecting sleeve (12), and the shaped steel beam (3) is in plug-in fit with the connecting sleeve (12); the connecting sleeve (12) is provided with a clamping assembly (13) for limiting the shaped steel beam (3) in the connecting sleeve (12).

8. The deep foundation pit fabricated section steel support structure of claim 7, wherein: the clamping assembly (13) comprises a spring (131), a clamping block (132) and a pull rod (133), wherein the accommodating part (121) is communicated with the side wall of the connecting sleeve (12), the spring (131) is arranged on the inner wall of the accommodating part (121), the clamping block (132) is slidably arranged in the accommodating part (121), the clamping block (132) is connected with the spring (131), the spring (131) always has a trend of driving the clamping block (132) to partially slide out of the accommodating part (121), the pull rod (133) is slidably arranged on the accommodating part (121), and the pull rod (133) extends into the accommodating part (121) and is connected with the clamping block (132); and the profiled steel beam (3) is provided with a clamping sleeve (14) which is used for being in plug-in fit with the clamping block (132).

9. The deep foundation pit fabricated section steel support structure of claim 1, wherein: one end of the shaped steel roof beam (3) close to the surrounding purlin (4) is provided with an inclined strut (15) through a bolt, and one end of the inclined strut (15) away from the shaped steel roof beam (3) can be detachably arranged on the surrounding purlin (4).

10. The deep foundation pit fabricated section steel support structure of claim 1, wherein: the enclosing purlin (4) is provided with a steel cable (16), and the steel cable (16) is connected with the profiled steel beam (3).