CN205934968U - Prefabricated assembled underground silo structure - Google Patents

Abstract

The utility model belongs to the technical field of underground silo facility and specifically relates to a prefabricated assembled underground silo structure that effectively improves secret silo efficiency of construction, reduces construction cost by a wide margin. Prefabricated assembled underground silo structure includes to set up in the at least one deck pit shaft structure of below ground, every layer pit shaft structure comprises at least two structure well components concatenations, and pit shaft structure bottommost is provided with the bottom plate, is provided with the through -hole that is used for elevator lift/lower in each layer backup pad. The utility model discloses the construction reliability is high, and construction speed is fast, is particularly useful for the field that construction cycle is short and construction space is limited and uses.

Description

Prefabricated assembled underground silo structure

Technical field

The present invention relates to underground silo facility field, especially a kind of prefabricated assembled underground silo structure.

Background technology

With the continuous quickening of China's Development of China's Urbanization, urban land resource is rare all the more, by using the underground space, can Ground is changed with the space realizing more efficient benefit, simultaneously the percentage contribution of lifting urban infrastructure and service facilities.City Comprehensive, three-dimensional exploitation be conducive to preserving the ecological environment and save natural resources, be the reasonable of urban sustainable development Effective way.

In the electric business epoch, the future of Storage of Goods is extensively had an optimistic view of, and subsurface storage space more belongs to the scarce resource in storage. The closure of the underground space and heat endurance highly beneficial, its antidetonation, explosion-proof, radiation proof spy for storing some goods and materials Property is suitable to build underground fuel, combustion gas, armory；It is heat-insulated, the condition of lucifuge, low temperature is suitable to the food such as drinks, fruit, seafood Bunker, run relatively low compared with the freezer of ground with maintenance cost.Additionally, underground warehouse-type garage, underground commercial space Exploitation is in tries to explore the stage.

The modal mode of construction of underground engineering is using steel sheet pile or soil cement water-stop curtain, foundation ditch to be carried out at present Supporting, then carries out pouring of xoncrete structure.Steel sheet pile construction method driving depth is more than foundation depth, and campshed closely, is made Valency is higher, long in time limit, big to surrounding buildingses disturbance.Soil cement seepage proof curtain can not keep out soil pressure. cast-in-place concrete construction technology Long in time limit, it is unfavorable for building in building dense area.It is that the construction time is longer using drop shaft sinking its shortcoming of constructing；Water and soil during deep excavation Confined pressure is greatly it is difficult to sink；Underground water cannot be intercepted, ground using long cantilever excavator or grab bucket carry out underwater excavation it is difficult to Control construction quality and progress, boulder and be difficult to process during hard rock when running into；Easily there is the unfavorable geology bars such as quicksand in construction Inclination of open caisson is caused during part.Traditional soil layer freezing process is to reach sealing and bear soil pressure effect, need to adopt multiple rows of freezing hole, round Closely, frozen thickness is larger, is not suitable for rectangular cross section shaft construction.Freeze drop shaft sinking construction document to deliver and in May, 2015, The document is not described in detail to method.There is shortcoming in document methods described and institute of the present invention solve problem is as follows：1) literary composition Offer methods described and receive well construction, narrow application range for underground piping push pipe.The present invention is applied to and builds in building dense area Underground silo, function and range are wide.2) document methods described does not specify how to solve open caisson Mechanical Excavation of Frozen Soil subsidence problems, applies Work speed is slow, and difficulty is big.The present invention adopts boots feet heating system, improves temperature and meets frozen soil strength excavating scope of operation local Require.3) push pipe received well described in document is circular cross-section, and floor space is big, is unfavorable for arrangement in groups of building.The present invention fits For circular and square-section well, applicable surface is wider.4) document methods described does not specify open caisson boots pin, and open caisson section is compared with heavy excavation When depth is deeper, boots pin stress can not meet requirement.The present invention adopts this boots pin ribbed stiffener platform, and operation platform is added with boots pin Strength rib combines, and is applicable to major diameter deep excavation.5) document receives well construction and adopts common caisson structure, needs field fabrication Open caisson, speed of application is slow, and floor space is big.The present invention adopts precast assembly mode of construction, and silo structure can be transported by some pieces Small members composition, quality is good, and speed of application is fast, and floor space is little.6) freezing process described in document is only with open caisson construction technique Vertical, fail comprehensive play both advantages and make up shortcoming, cost is higher.The present invention adopts multi-turn to be combined frozen soil wall, realizes sealing, encloses Protect, reconnoitre, leading heavy multiple action.Frozen soil well and open caisson are forced into compound shaft jointly, have complementary functions, and reduce cost.7) literary composition Offer methods described in construction work, shaft bottom not to be closed, when as larger in groundwater pressure, easily cause piping accident.

Content of the invention

The technical problem to be solved is to provide one kind to effectively improve underground silo construction efficiency, is greatly lowered The prefabricated assembled underground silo structure of construction cost.

The technical solution adopted for the present invention to solve the technical problems is：Prefabricated assembled underground silo structure, including setting It is placed at least one of which shaft structure of below ground, described every layer of shaft structure splices structure by least two structure well components Become, shaft structure bottommost is provided with base plate, each layer gripper shoe is provided with the through hole for elevator lifting.

It is further to be connected by being arranged at the trapezoid tongue groove of structure well component termination between described structure well component Constitute shaft structure, described trapezoid tongue groove designs according to ground confined pressure, allows between structure well component in shaft structure Radinal pressure Self-locking is realized under effect.

It is further that junction steel plate is fixedly connected with structure well component by steel plate dowel, reinforcing bar in structure well component It is welded to connect at steel plate with reinforcement welding with junction steel plate, adjacent junction steel plate is welded to connect by anchor slab, described It is provided with structure glue between adjacent trapezoid tongue groove.

It is further to apply including the boots pin on the internal face being fixedly installed on bottommost structure well component in the horizontal direction Work platform, described boots pin operation platform is the sash rib of bottommost structure well component.

The invention has the beneficial effects as follows：The present invention freezes hole position by reasonable Arrangement rectangle, circle, and reach frozen soil wall with The effect of Water And Earth Pressures shared in proportion by structure well, substantially reduces the effect of structure well square-section internal force.In addition, the present invention By the way of frozen soil and the common bearing load of fabricated construction well, reduce the sedimentation of the surrounding enviroment soil body, decrease construction Operation, saves construction period, reduces operation side, reduces cost.Due to using comprehensive bore distribution method, reasonable distribution hole position, Decrease the quantity of boring.Arch ring cloth hole forms and carries frozen soil wall, the outer rectangle cloth hole of the borehole wall forms antiseepage freezing meter, borehole wall cloth hole Heavy frozen soil wall is led in formation, cloth hole forms prospecting grout hole in well, and shaft bottom grouting back cover makes anhydrous to construct, and increased construction peace Quan Xing.By design, the parameter such as the line style of adjustment four class cloth holes, quantity, pitch of holes, bore dia and borehole wall distance, can adjust each What class cloth hole acted on undertakes ratio, can be carried out for design according to different geological conditions, thus increasing using this construction method model Enclose the effect with validity.In addition, the invention by using controlling the outer frozen pipe thermal field of the borehole wall, making borehole wall edge soil Body is in micro- jelly state.Research and development simultaneously extend out step boots pin and form the technology that grouting perps and boots pin heating tube combine, effectively Solve the contradiction between Mechanical Excavation of Frozen Soil and wellbore stability, pressure conduction, structure well resistance.Counterbore, guide structure are led by setting Well vertical subsidence, construction reliability is high, and speed of application is fast.Increased to ground confined pressure by setting structure bottom ring-type ribbed stiffener Bearing capacity, play the effect of construction operation platform, dregs counterweight stacking platform in the construction time, be simultaneously used for fixed installation ground Plate.By analyzing the lower structure well component internal force distribution of rock and soil pressure effect, component connection is carried out using trapezoid tongue groove, according to component Size adjusting R-joining angle, thus reaching structure self-locking state, greatly improves the reliability of seam.Present invention is particularly suitable for applying Field limited by work cycle is short and construction space uses.

Brief description

Fig. 1 is the schematic diagram of unwrapping wire positioning of the present invention and arrangement boring.

Fig. 2 is the schematic diagram of laying cryovial and grout pipe after present invention boring.

Fig. 3 is the horizontal structure schematic diagram of the structure well component of the present invention.

Fig. 4 is the structure well component installation diagram of the present invention.

Fig. 5 is that the compound arch being formed in work progress of the present invention carries frozen soil wall, rectangle antiseepage frozen soil wall, leads heavy frozen soil Wall schematic diagram.

Fig. 6 is boots leg structure in work progress of the present invention, annular ribbed stiffener, leads counterbore operating diagram.

Fig. 7 is vertical excavation schematic diagram in work progress of the present invention.

Fig. 8 is the schematic diagram that bottommost base plate of the present invention is arranged at boots pin operation platform.

Fig. 9 is that the present invention reaches structural representation during desired depth.

Figure 10 is the top view when present invention is actually used.

Figure 11 is sectional view when the present invention is actually used.

In figure is labeled as：Arch ring freezing hole 1, arch cloth hole line 11, arch ring cryovial 12, arch carry frozen soil wall 13, square Circle freezes hole 2, rectangle cloth hole line 21, square circle cryovial 22, rectangle antiseepage frozen soil wall 23, leads heavy grout hole 3, borehole wall cloth hole line 31st, borehole wall grout pipe 32, rectangle lead heavy frozen soil wall 33, reconnoitre grout hole 4, grout pipe 42 in well, bottom concrete structure 43, Face 5, underground ground 51, structure well component 6, trapezoid tongue groove 61, boots pin operation platform 62, gripper shoe 63, base plate 64, elevator 65, 68, steel plate dowel 69 at structure glue 66, junction steel plate 67, steel plate and reinforcement welding, extend out step boots leg structure 7, boots pin adds Heat pipe 71, vertical gap 72, excavator 8, goods 9.

Specific embodiment

The present invention is further described below in conjunction with the accompanying drawings.

Prefabricated assembled underground silo compound shaft construction method as shown in Figures 1 to 10, comprises the following steps：A, head First in silo build on-site unwrapping wire positioning and arrangement boring, wherein said unwrapping wire is respectively：Arrange arch along arch cloth hole line 11 Circle freezes hole 1, leads heavy grout hole 3, institute along rectangle cloth hole line 21 arrangement square circle freezing hole 2, along borehole wall cloth hole line 31 arrangement Stating arch cloth hole line 11, rectangle cloth hole line 21 and borehole wall cloth hole line 31 is to be sequentially arranged with reference to ecto-entad with excavation limit, It is provided with exploration grout hole 4 in described borehole wall cloth hole line 31；B, freeze hole 1 by above-mentioned arch ring and square circle freeze hole 2 respectively to Underground is laid arch ring cryovial 12 and square circle cryovial 22 and is carried out freezing operation, forms arch respectively and carries frozen soil wall 13 and square Shape antiseepage frozen soil wall 23, after above-mentioned soil layer microfreeze, is laid to underground respectively by leading heavy grout hole 3 and exploration grout hole 4 Grout pipe 42 in borehole wall grout pipe 32 and well and carry out bottom grouting, formed bottom concrete structure 43, described bottom concrete Structure 43 and arch carry frozen soil wall 13 and rectangle antiseepage frozen soil wall 23 bottom is collectively forming the structure of closing, and synchronization carries out ground The excavation operation in face 5；C, structure well component 6 is carried out at the construction plane after excavation splicing assembling and form shaft structure, Wherein, the bottom positioned at the structure well component 6 of whole shaft structure bottommost be provided with along borehole wall cloth hole line 31 heavy for leading Step extends out boots leg structure 7, and described step extends out boots leg structure 7 and is internally provided with boots pin heating tube 71；D, treat above-mentioned arch Shape carry frozen soil wall 13 and rectangle antiseepage frozen soil wall 23 freeze after the soil body reaches design strength and form compound frozen soil wall, pass through The boots pin heating tube 71 that step extends out in boots leg structure 7 carries out hydrothermal circulation, and utilizes excavator 8 to excavate shaft structure simultaneously The interior soil body, when structure well component 6 sinks, boots leg structure 7 forms vertical gap 72 between shaft structure and compound frozen soil wall When, by well head toward vertical gap 72 in irrigate antifreeze thixotroping mortar；E, with soil excavation in shaft structure, above-mentioned well Barrel structure continuous vertical subsidence under the guiding leading heavy grout hole 3, now progressively splicing structure well component 6 above shaft structure To form new shaft structure, until it reaches desired depth；F, treat above-mentioned digging operation after the completion of, in the boots of shaft structure bottom Mounting base 64 on pin operation platform 62；G, subsequently extract arch ring cryovial 12 and square circle cryovial 22 and to arch ring freeze hole 1 Freeze hole 2 with square circle and carry out slip casting, the antifreeze thixotroping mortar of perfusion at vertical gap 72 is replaced into cement mortar, and closes position Each boring hole in ground 5；H, gripper shoe 63 and elevator 65, the ground of shaft structure well head are successively installed in shaft structure Build silo gateway at 5, complete commissioning test, and be finally completed construction.

In the first step of practice of construction, need in silo build on-site unwrapping wire positioning and arrangement boring, described four kinds of holes It is respectively：Arch ring freezing hole 1, square circle freeze hole 2, lead heavy grout hole 3 and prospecting grout hole 4.Wherein, arch ring freezing hole 1 is little Diameter freezing hole, forms arch and carries frozen soil wall 13, and what arch carried frozen soil wall 13 primarily serves the purpose of carrying Water And Earth Pressures, reduces Structure well penetration resistance, controls surrounding soil sedimentation and deformation, has concurrently and blocks water and the effect of geology inspecting hole monitoring holes.Square circle freezes hole 2 For minor diameter freezing hole, form rectangle antiseepage frozen soil wall 23, rectangle antiseepage frozen soil wall 23 primarily serves the purpose of isolation well side underground water, When hole bottom is excavated, rectangle antiseepage frozen soil wall 23 forms vertical slab under the two ends build-in of the borehole wall and hole bed rock soil, plays carrying The effect of water and soil confined pressure, has the effect of geology inspecting hole monitoring holes concurrently.Lead heavy grout hole 3 and lead heavy boring for major diameter, lead heavy filling In the presence of the freezing hole in slurry hole 3 outside, the soil body reaches microfreeze state, forms rectangle and leads heavy frozen soil wall 33, leads heavy grout hole 3 It act as destroying the structural integrity of the soil body to be excavated under the borehole wall in advance, the cutouts soil body, hang down along the border that the borehole wall is formed Straight boring guiding shaft structure sinks, it is to avoid deflection, realizes shaft structure and quickly sink, in addition, micro- frozen soil body can be stablized Excavate the soil body, prevent local collapse, the cutting of step boots leg structure 7 that extend out in shaft bottom scrapes the patch realizing the borehole wall and the soil body Close, have geology inspecting hole and the effect of back cover grout hole concurrently.Prospecting grout hole 4 is the exploratory bore-hole being evenly arranged in well, and prospecting fills The frozen soil wall bottom that slurry hole 4 act as that freezing hole is formed carries out grouting closing, forms closing frozen soil pit shaft, realizes anhydrous excavation Construction.Meanwhile, carry out geologic prospect by reconnoitring grout hole 4 to excavating scope ground, formulate and be directed to arrangement and method for construction, have concurrently broken The broken, effect of the cutouts soil body., cleverly by different types of boring reasonable Arrangement, each hole position effect is again mutually folded for the present invention Closing, thus organically forming compound frozen soil wall, jointly playing a role, that achieves many things at one stroke solves present in traditional construction scheme Various construction difficult problems.

For further improve production efficiency, play the construction advantage with inventing " prefabrication and assembly construction ", can be by described step Structure well component 6 in rapid c passes through standardized designs and production in factory in advance, and according to silo sectional dimension, buried depth, Soil properties, project characteristic determine steel bar arrangement and the quantity of prefabricated components.Thus greatly improving efficiency of construction.

As shown in fig. 7, the present invention is cleverly fixedly installed on the internal face of bottommost structure well component 6 in the horizontal direction Boots pin operation platform 62, this is designed with following several big purposes：First, in step d, excavator 8 excavates soil in shaft structure Can put digging out the soil body to boots pin operation platform 62 after body, then be transported to outside well through borehole wall service chamber of mucking haulage, thus improving fortune Slag efficiency, accelerating construction progress, two, in step e, when shaft structure occur under the guiding of bottom boots leg structure 7 tired When difficult, boots pin operation platform 62 stacked and helps heavy counterweight, contribute to the shaft structure by periphery frictional resistance and continue to sink, Thus ensure that the continuity of construction；3rd, in step f, the base plate 64 of shaft structure bottom is arranged at boots pin operation platform 62 On, it is achieved thereby that the steadiness to shaft structure sealed bottom, improve the effect of sealing structure.4th, along inside structure well The boots pin operation platform 62 of annular configuration forms structure well and puts more energy into floor, improves the bearing capacity and stiffness of structure bottom.

For by the silo structure that above-mentioned construction method finally gives it is：Including being arranged at least one of which below 5 for the ground Shaft structure, described every layer of shaft structure is spliced to form by least two structure well components 6, and shaft structure bottommost is provided with Gripper shoe 63, gripper shoe 63 is provided with the through hole for elevator 65 lifting.As shown in Figure 9 and Figure 10, goods 9 can be sufficient Successively be positioned in gripper shoe 63, and even the bottom goods 9 it is also possible to by elevator 65 by lifting through hole and reality Now allocate and transport.General, preferably the through hole in described gripper shoe 63 is arranged at the geometric center of gripper shoe 63.

For above-mentioned structure well component 6, in order to increase speed of application and the quality of shaft structure, can select such Scheme：Pit shaft knot is connected and composed by being arranged at the trapezoid tongue groove 61 of structure well component 6 termination between described structure well component 6 Structure, described trapezoid tongue groove 61 allows realizes self-locking, concrete structure between structure well component 6 under the effect of shaft structure Radinal pressure Refer to Fig. 4.During actual design, can by being calculated bevel angle during the pressurized no shearing of the seam of trapezoid tongue groove 61, In order to avoid component is long, suitably increase the bevel angle of trapezoid tongue groove 61, and make seam arm roots width be equal to brachium.Above-mentioned Design makes structure well component 6 under the effect of ground confined pressure, and seam is in pressured state, has self-tightening effect, good water-proof effect, holds Load power is big.As shown in Figure 4, further junction steel plate 67 can also be set in seam termination, junction steel plate 67 passes through steel plate Dowel 69 is fixedly connected with structure well component 6, and in structure well component 6, reinforcing bar and junction steel plate 67 are 68 at steel plate with reinforcement welding It is welded to connect, adjacent junction steel plate 67 is welded to connect by anchor slab, it is also possible to select in adjacent trapezoid tongue groove Setting structure glue 66 between 61, the further steadiness improving seam.

In addition, for the stability realizing structure, such scheme can be selected：Including being fixedly installed in the horizontal direction Boots pin operation platform 62 on the internal face of bottommost structure well component 6, described boots pin operation platform 62 is bottommost structure well The sash rib of component 6.In construction, boots pin operation platform 62 not only plays above-mentioned platform action, can also be rear Phase plays the effect increasing structure well component 6 anti-bending strength.The boots pin operation platform 62 of the present invention seems design simply, but actual It is no matter after construction period or construction finish, have highly effective function.

For synthesis, the technological core of the present invention is：First, before silo excavation construction, using comprehensive pattern, formed Compound frozen soil wall, thus the underground soil body is carried out reconnoitre, consolidation by freezing, back cover, play grouting, carry soil pressure, block water, lead heavy, Monitoring, in advance multiple effects such as broken.In construction, by adjust solidification point, frozen soil wall arch ring height collapse than etc. parameter, be combined and freeze Cob wall and structure well proportionally shared ground confined pressure, form the compound shaft of bottom lock.2nd, using prefabricated assembled Method builds hollow, rectangular underground silo, and shaft structure level is divided into multiple components, and scantling can carry out spelling in transport and well Dress, using self-locking mitre, makes seam be in the state of the low shearing of high pressure, high capacity, good integrity.3rd, shaft structure Bottom member forms perps using extending out trapezoidal boots pin between the borehole wall and the soil body, and well head irrigates antifreeze thixotroping mortar, simultaneously with adopt With boots pin heating tube 71 use in conjunction, the lance between solution Mechanical Excavation of Frozen Soil, wellbore stability, rock and soil pressure conduction, structure down-hole are heavy Shield.4th, boots pin operation platform 62 is set, excavates and after terminating, precast support plate 63 is connected with boots pin operation platform 62, meanwhile, boots Pin operation platform 62 also serves as shaft bottom mechanical equivalent of light excavation dregs stacking platform, construction operation platform, helps heavy counterweight stacking platform, dregs to go out Well transferring platform, also becomes sash rib after construction terminates.

Claims (4)

1. prefabricated assembled underground silo structure it is characterised in that：Tie including being arranged at ground (5) at least one of which pit shaft below Structure, described every layer of shaft structure is spliced to form by least two structures well component (6), and shaft structure bottommost is provided with base plate (64), each layer gripper shoe (63) is provided with the through hole lifting for elevator (65).

2. as claimed in claim 1 prefabricated assembled underground silo structure it is characterised in that：Described structure well component (6) it Between connect and compose shaft structure by being arranged at the trapezoid tongue groove (61) of structure well component (6) termination, described trapezoid tongue groove (61) designed according to ground confined pressure, allow and realize self-locking under the effect of shaft structure Radinal pressure between structure well component (6).

3. as claimed in claim 2 prefabricated assembled underground silo structure it is characterised in that：Junction steel plate (67) passes through steel plate Dowel (69) is fixedly connected with structure well component (6), and the interior reinforcing bar of structure well component (6) and junction steel plate (67) are in steel plate and reinforcing bar Weld (68) is welded to connect, and adjacent junction steel plate (67) is welded to connect by anchor slab, described adjacent trapezoid tongue groove (61) it is provided with structure glue (66) between.

4. the prefabricated assembled underground silo structure as described in claim 1,2 or 3 it is characterised in that：Including in the horizontal direction It is fixedly installed on boots pin operation platform (62) on the internal face of bottommost structure well component (6), described boots pin operation platform (62) for the sash rib of bottommost structure well component (6).