CN203846506U - Angle bracing structure for foundation pit supporting - Google Patents
Angle bracing structure for foundation pit supporting Download PDFInfo
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- CN203846506U CN203846506U CN201420280742.XU CN201420280742U CN203846506U CN 203846506 U CN203846506 U CN 203846506U CN 201420280742 U CN201420280742 U CN 201420280742U CN 203846506 U CN203846506 U CN 203846506U
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Abstract
The utility model discloses an angle bracing structure for foundation pit supporting. Three sets of angle bracings are arranged on each inwards-concave-portion-provided vertex part of a foundation pit, and the two sets of angle bracings close to the position of the corresponding vertex generate pre-stress by adjusting a lifting jack. The supporting structure is small in occupied space on the whole, brings convenience to excavation of the foundation pit and improves the efficiency. Meanwhile, the components of the supporting structure are mostly sectional materials in standard sizes and are connected through bolt pieces, therefore, installation and disassembly are both very convenient, the reutilization ratio is high and the foundation pit supporting cost is reduced on the whole.
Description
Technical field
The utility model belongs to field of civil engineering, is specifically related to the prestressing force supporting and protection structure of foundation ditch.
Background technology
The mode that existing pattern foundation pit supporting structure mode mostly adopts is, in the surrounding of foundation ditch, reinforced concrete fortifield village purlin is set, arrange netted steel pipe support enclosing in purlin week again, when it is not enough, steel pipe consumption is large, install, remove trouble, and it is large to take up space, and is unfavorable for soil excavation in foundation ditch, can not apply prestressing force to foundation pit side-wall well, support strength is low, conventionally can only increase support force by the density that increases steel pipe layout; And when different pattern foundation pit supporting structure, need use the steel pipe of different size, steel pipe repeat usage is low, causes the costly of pattern foundation pit supporting structure.
Summary of the invention
Technical problem to be solved in the utility model is: the deficiency existing for prior art, and provide a kind of and install, remove conveniently, occupy foundation ditch space little, the angle brace device of the pattern foundation pit supporting structure that supporting intensity is high and the supporting section bar rate of recovery is high.
For realizing the object of the utility model, be achieved by the following technical solutions: a kind of angle brace device for pattern foundation pit supporting structure, be provided with the inner fovea part of a right-angled trapezium shape at a vertex position place of foundation ditch, described inner fovea part includes a straight flange parallel with the long limit of foundation ditch and becomes 125 hypotenuses of spending with one with the long limit of foundation ditch; This vertex position is provided with 3 groups of angle braces, includes 1 group of sub-thread angle brace and 1 group of two strands of angle brace and 1 group of four strands of angle brace;
Described sub-thread angle brace includes two the first angle brace seats and a strut, the first angle brace seat is bolted and is enclosing on purlin shaped steel, the straight flange of strut and foundation ditch one side and inner fovea part forms an isosceles right triangle, one end of strut and a first angle brace seat are bolted, and between the other end of strut and another the first angle brace seat, are connected with a jack.
Two strands of described angle braces include two the 4th angle brace seats and are connected to two struts between two the 4th angle brace seats, the 4th described angle brace seat is bolted two adjacent enclosing between purlin shaped steel, and the 4th angle brace seat is connected with capping beam by rebar connector; Between two struts, be connected with two channel-section steels, and between channel-section steel and strut, form 30 degree angles.
Four strands of described angle braces include a second angle brace seat, a trivet seat and four struts, described the second angle brace seat and trivet seat are bolted respectively two adjacent enclosing between purlin shaped steel, and the second angle brace seat is connected with capping beam by rebar connector with trivet seat; The second angle brace seat and trivet seat below is supported with respectively crossbeam, and described crossbeam is connected between two cement mixing piles, and crossbeam and enclose purlin shaped steel and be arranged in parallel.
Between four described struts, be evenly connected with 8-10 and connect cover plate, connect cover plate mutually vertical with strut; Between four described struts, be also connected with channel-section steel, each channel-section steel is between two adjacent connection cover plates.
Below four strands of angle braces and two strands of angle braces, be also supported with a public crossbeam, the strut of this crossbeam and four strands of angle braces, two strands of angle braces is perpendicular.
The first described angle brace seat surrounds an isosceles right triangle by three block plate head and the tail successively welding, three block plate intermediate vertical are welded with a stiffener, be positioned on the steel plate of hypotenuse and offer six connecting holes, six connecting holes along hypotenuse length direction with two row's three column distributions, laterally the distance of adjacent two connecting holes is a, and longitudinally the distance of adjacent two connecting holes is 2a; Be positioned on the steel plate of a right-angle side and offer four connecting holes; Four connecting holes are with two row's two column distributions, and distances horizontal, longitudinally adjacent two connecting holes are 2a; And the position deflection that is positioned at six connecting holes on the steel plate of hypotenuse is not offered steel plate one side of connecting hole; As shown in Figure 9, the first angle brace is sat and is connected with strut and is produced after prestressing force by jack, pressure mainly concentrates on steel plate on the right-angle side that has connecting hole and the right side part of hypotenuse upper steel plate, therefore it is the most reasonable that the connecting hole of the steel plate on hypotenuse is arranged on the position of keeping right, do not need too much connecting hole on the one hand, ensured again on the other hand bonding strength.
The second described angle brace seat is welded and forms successively by three sections of H shaped steel, and the web of three sections of H shaped steel is in the same plane, and three sections of H shaped steel surround an isosceles right triangle; The H shaped steel i that is positioned at hypotenuse is welded with a H shaped steel h in 1/3 position on the edge of a wing outwardly, and the both ends of H shaped steel h and H shaped steel i are all welded with junction plate; H shaped steel i is positioned at H shaped steel h mono-side and on the edge of a wing, offers 2 group of two connecting hole of arranging four row outwardly, and the distance of horizontal two adjacent connecting holes is a, and the distance of longitudinal two adjacent connecting holes is 2a; H shaped steel i is positioned at H shaped steel h opposite side and offers one group of two connecting hole of arranging 11 row and one group two and arranging six row outwardly on the edge of a wing; Between the web of H shaped steel i inner side and the edge of a wing, be welded with multiple reinforcing gussets, reinforce gusset and be positioned at the position at H shaped steel h two ends, and position between two adjacent groups connecting hole; The H shaped steel j end that is positioned at right-angle side is welded with junction plate, and the H shaped steel j edge of a wing outwardly offers six group of two connecting hole of arranging two row; The end of H shaped steel k and the edge of a wing vertical welding of H shaped steel j next-door neighbour end that are positioned at another right-angle side, the other end of the k of H shaped steel and H shaped steel i are away from one end welding of H shaped steel h; The H shaped steel k edge of a wing outwardly offers three group of two connecting hole of arranging two row; H shaped steel k is welded with a guide plate passing for steel strand near the end position of H shaped steel i, and H shaped steel i is welded with a steel strand fixed head near one end of H shaped steel k; Between H shaped steel i, H shaped steel j and H shaped steel k, be welded with a junction steel plate, the position that junction steel plate is positioned at the second angle brace seat middle part is provided with two steel strand anchorages;
Described trivet seat is welded successively and is formed by three sections of H shaped steel, and the web of three sections of H shaped steel is in the same plane, and three sections of H shaped steel surround an isosceles right triangle; The H shaped steel e two ends that are positioned at hypotenuse stretch out, and end is fixedly welded with junction plate, and a H shaped steel f end that is positioned at right-angle side is also connected with a junction plate; On the edge of a wing of each H shaped steel periphery of described trivet seat, offer connecting hole; On the H shaped steel f edge of a wing, offer six connecting hole unit, there are four connecting holes each connecting hole unit, and the distance in each connecting hole unit between horizontal, longitudinal two connecting holes is 2a; Be positioned on the H shaped steel g edge of a wing of another right-angle side and offer five connecting hole unit; The interlude on the H shaped steel e edge of a wing offers seven connecting hole unit, and the two end portions on the H shaped steel e edge of a wing offers two group of two connecting hole of arranging eight row, and the distance of horizontal two adjacent connecting holes is a, and the distance of longitudinal two adjacent connecting holes is 2a; Between the web of each H shaped steel and the edge of a wing, be also welded with multiple reinforcing gussets, reinforcing gusset is positioned at the center of each connecting hole unit transverse; Between H shaped steel f and H shaped steel e, be welded with a reinforcing H shaped steel a parallel with H shaped steel g, between reinforcing H shaped steel a and H shaped steel e, H shaped steel g, be welded with two sections and reinforce H shaped steel b; Reinforce H shaped steel a, reinforce the web of H shaped steel b and the web isoplanar of H shaped steel e, reinforce H shaped steel a and reinforce vertical setting of H shaped steel b, and between reinforcing H shaped steel a two edges of a wing, the corresponding position that reinforces the H shaped steel b edge of a wing is welded with reinforcing gusset; Between each adjacent H shaped steel of trivet seat, and reinforce H shaped steel a and H shaped steel f junction, reinforcing H shaped steel b and H shaped steel g junction and be all welded with and the isoplanar triangular reinforced steel plate of web; Described trivet holder structure is firm, and mechanical strength is high, and owing to being provided with the reinforcing H shaped steel a of right-angled intersection form and reinforcing H shaped steel b, makes the H type steel on each limit all can bear larger pressure.
The 4th described angle brace seat is welded and forms successively by three sections of H shaped steel, and the web of three sections of H shaped steel is in the same plane, and three sections of H shaped steel surround an isosceles right triangle; The H shaped steel o one end that is positioned at hypotenuse stretches out, and H shaped steel o two ends are fixedly welded with junction plate, the H shaped steel p of close H shaped steel o elongated end one side offers three connecting hole unit on the edge of a wing outwardly, there are four connecting holes each connecting hole unit, and the distance between horizontal, longitudinal two connecting holes is 2a; H shaped steel o is positioned on the elongated end part edge of a wing outwardly and offers one group of two connecting hole of arranging six row, and the distance of horizontal two adjacent connecting holes is a, and the distance of longitudinal two adjacent connecting holes is 2a; H shaped steel o differs from the connecting hole that offers one group of two connecting hole of arranging two row and a group two on the elongated end opposite side edge of a wing outwardly and arrange nine row, and in every group of connecting hole, the distance of horizontal two adjacent connecting holes is a, and the distance of longitudinal two adjacent connecting holes is 2a; The corresponding reinforcing gusset that is welded with inside the edge of a wing of H shaped steel o and other two H shaped steel junctions, the medium position of corresponding every group of connecting hole is also welded with reinforcing gusset inside the H shaped steel p edge of a wing.
The hypotenuse part of described inner fovea part is not established and is enclosed purlin shaped steel, between the cement mixing pile metope of hypotenuse position and the soil layer in foundation ditch outside, is evenly connected with multiple jet mixing stiffening piles, and jet mixing stiffening pile is built-in with prestress wire; The jet mixing stiffening pile of each position is connected on capping beam in upper jet mixing stiffening pile end as one group taking upper and lower two, under jet mixing stiffening pile end be connected on the waist rail of cement mixing pile medium position; Described waist rail is horizontally disposed with and is fixedly connected with cement mixing pile, each under jet mixing stiffening pile be connected with same waist rail; Be 25 degree at the angle of upper jet mixing stiffening pile and horizontal plane, under jet mixing stiffening pile and the angle of horizontal plane be 20 degree.Every group of described jet mixing stiffening pile adopts different angles, increased the supporting intensity to cement mixing pile.
The described purlin shaped steel that encloses is H shaped steel, on the edge of a wing of its both sides, equidistantly offer connecting hole group, each connecting hole group is by two connecting hole cell formations, there are six connecting holes each connecting hole unit, six connecting holes are along enclosing the formal distribution that purlin shaped steel length direction is listed as with two rows three, laterally the distance between two adjacent connecting holes is a, and longitudinally the distance between two adjacent connecting holes is 2a; The two ends of enclosing purlin shaped steel are fixedly welded with junction plate, offer four connecting holes with two row's two row formal distributions on junction plate, and the distance between horizontal, longitudinal two adjacent connecting holes is 2a; Adjacent enclosing between purlin shaped steel used four groups of bolts coaxially to connect by junction plate.
Described rebar connector includes L shaped reinforcing bar, reinforcing bar in minor face and the capping beam of L shaped reinforcing bar is welded and fixed, end, the long limit coaxial welding of L shaped reinforcing bar has the female reinforcing bar connector that can attachment screw of tool, encloses purlin shaped steel, the first angle brace seat, the second angle brace seat, trivet seat and the 4th angle brace seat and is all connected by screw on reinforcing bar connector.Reinforcing bar in minor face and the capping beam of L shaped reinforcing bar welds and is cemented in the concrete of capping beam, and bonding strength is high to be not easy.
Compared with prior art, the beneficial effects of the utility model are: by be provided with the apex portion of inner fovea part at foundation ditch, three groups of angle braces are set, and two groups of angle braces near vertex position produce prestressing force by adjusting jack, the space that this kind of supporting and protection structure takies is on the whole little, be convenient to the excavation of foundation ditch, raise the efficiency, simultaneously, the member of supporting and protection structure is mostly standard-sized section bar, connect by bolt part, install, remove all very convenient, repeatedly recycling rate of waterused is high, has reduced on the whole the cost of pattern foundation pit supporting structure.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of foundation pit support system.
Fig. 2 is the angle brace structural representation of foundation ditch vertex position inner fovea part.
Fig. 3 is the structural representation of sub-thread angle brace.
Fig. 4 is the structural representation of the first angle brace seat.
Fig. 5 is the structural representation of overlooking direction of Fig. 4.
Fig. 6 is the structural representation of the 4th angle brace.
Fig. 7 is the structural representation of the second angle brace seat.
Fig. 8 is the structural representation of trivet seat.
Fig. 9 is the mounting structure schematic diagram of inner fovea part hypotenuse position jet mixing stiffening pile.
Figure 10 is the syndeton schematic diagram that encloses purlin shaped steel and capping beam.
Figure 11 is the structural representation of rebar connector.
Detailed description of the invention
With reference to the accompanying drawings detailed description of the invention of the present utility model is made a detailed explanation below.
According to shown in Fig. 1 to Figure 11, a kind of angle brace device for pattern foundation pit supporting structure described in the present embodiment, a kind of angle brace device for pattern foundation pit supporting structure, be provided with the inner fovea part of a right-angled trapezium shape at a vertex position place of foundation ditch, described inner fovea part includes a straight flange parallel with the long limit of foundation ditch and becomes 125 hypotenuses of spending with one with the long limit of foundation ditch; This vertex position is provided with 3 groups of angle braces, includes 1 group of sub-thread angle brace and 1 group of two strands of angle brace and 1 group of four strands of angle brace; Described inner fovea part is positioned at the entry position of Suo Yaojian mansion, foundation ditch top.
Described sub-thread angle brace includes two the first angle brace seats 21 and a strut 11, the first angle brace seat is bolted and is enclosing on purlin shaped steel 10, the straight flange of strut and foundation ditch one side and inner fovea part forms an isosceles right triangle, one end of strut and a first angle brace seat are bolted, and between the other end of strut and another the first angle brace seat, are connected with a jack 30.
Two strands of described angle braces include two the 4th angle brace seats 25 and are connected to two struts between two the 4th angle brace seats, the 4th described angle brace seat is bolted two adjacent enclosing between purlin shaped steel, and the 4th angle brace seat is connected with capping beam by rebar connector; Between two struts, be connected with two channel-section steels, and between channel-section steel 14 and strut, form 30 degree angles.
Four strands of described angle braces include a second angle brace seat 22, trivet seat 23 and four struts, described the second angle brace seat and trivet seat are bolted respectively two adjacent enclosing between purlin shaped steel, and the second angle brace seat is connected with capping beam by rebar connector with trivet seat; The second angle brace seat and trivet seat below is supported with respectively crossbeam 13, and described crossbeam is connected between two cement mixing piles 40, and crossbeam and enclose purlin shaped steel and be arranged in parallel.
Between four described struts, be evenly connected with 8-10 and connect cover plate, connect cover plate mutually vertical with strut; Between four described struts, be also connected with channel-section steel, each channel-section steel is between two adjacent connection cover plates.
Below four strands of angle braces and two strands of angle braces, be also supported with a public crossbeam, the strut of this crossbeam and four strands of angle braces, two strands of angle braces is perpendicular.
The first described angle brace seat surrounds an isosceles right triangle by three block plate head and the tail successively welding, three block plate intermediate vertical are welded with a stiffener, be positioned on the steel plate of hypotenuse and offer six connecting holes, six connecting holes along hypotenuse length direction with two row's three column distributions, laterally the distance of adjacent two connecting holes is a, and longitudinally the distance of adjacent two connecting holes is 2a; Be positioned on the steel plate of a right-angle side and offer four connecting holes; Four connecting holes are with two row's two column distributions, and distances horizontal, longitudinally adjacent two connecting holes are 2a; And the position deflection that is positioned at six connecting holes on the steel plate of hypotenuse is not offered steel plate one side of connecting hole.
The first described angle brace seat surrounds an isosceles right triangle by three block plate head and the tail successively welding, three block plate intermediate vertical are welded with a stiffener, be positioned on the steel plate of hypotenuse and offer six connecting holes, six connecting holes along hypotenuse length direction with two row's three column distributions, laterally the distance of adjacent two connecting holes is a, and longitudinally the distance of adjacent two connecting holes is 2a; Be positioned on the steel plate of a right-angle side and offer four connecting holes; Four connecting holes are with two row's two column distributions, and distances horizontal, longitudinally adjacent two connecting holes are 2a; And the position deflection that is positioned at six connecting holes on the steel plate of hypotenuse is not offered steel plate one side of connecting hole.
The second described angle brace seat is welded and forms successively by three sections of H shaped steel, and the web of three sections of H shaped steel is in the same plane, and three sections of H shaped steel surround an isosceles right triangle; The H shaped steel i221 that is positioned at hypotenuse is welded with a H shaped steel h222 in 1/3 position on the edge of a wing outwardly, and the both ends of H shaped steel h and H shaped steel i are all welded with junction plate; H shaped steel i is positioned at H shaped steel h mono-side and on the edge of a wing, offers 2 group of two connecting hole of arranging four row outwardly, and the distance of horizontal two adjacent connecting holes is a, and the distance of longitudinal two adjacent connecting holes is 2a; H shaped steel i is positioned at H shaped steel h opposite side and offers one group of two connecting hole of arranging 11 row and one group two and arranging six row outwardly on the edge of a wing; Between the web of H shaped steel i inner side and the edge of a wing, be welded with multiple reinforcing gussets, reinforce gusset and be positioned at the position at H shaped steel h two ends, and position between two adjacent groups connecting hole; The H shaped steel j223 end that is positioned at right-angle side is welded with junction plate, and the H shaped steel j edge of a wing outwardly offers six group of two connecting hole of arranging two row; The end of H shaped steel k224 and the edge of a wing vertical welding of H shaped steel j next-door neighbour end that are positioned at another right-angle side, the other end of the k of H shaped steel and H shaped steel i are away from one end welding of H shaped steel h; The H shaped steel k edge of a wing outwardly offers three group of two connecting hole of arranging two row; H shaped steel k is welded with a guide plate 225 passing for steel strand near the end position of H shaped steel i, and H shaped steel i is welded with a steel strand fixed head 226 near one end of H shaped steel k; Between H shaped steel i, H shaped steel j and H shaped steel k, be welded with a junction steel plate 227, the position that junction steel plate is positioned at the second angle brace seat middle part is provided with two steel strand anchorages 228.
Described trivet seat is welded successively and is formed by three sections of H shaped steel, and the web of three sections of H shaped steel is in the same plane, and three sections of H shaped steel surround an isosceles right triangle; The H shaped steel e234 two ends that are positioned at hypotenuse stretch out, and end is fixedly welded with junction plate, and a H shaped steel f235 end that is positioned at right-angle side is also connected with a junction plate; On the edge of a wing of each H shaped steel periphery of described trivet seat, offer connecting hole; On the H shaped steel f edge of a wing, offer six connecting hole unit, there are four connecting holes each connecting hole unit, and the distance in each connecting hole unit between horizontal, longitudinal two connecting holes is 2a; Be positioned on the H shaped steel g236 edge of a wing of another right-angle side and offer five connecting hole unit; The interlude on the H shaped steel e edge of a wing offers seven connecting hole unit, and the two end portions on the H shaped steel e edge of a wing offers two group of two connecting hole of arranging eight row, and the distance of horizontal two adjacent connecting holes is a, and the distance of longitudinal two adjacent connecting holes is 2a; Between the web of each H shaped steel and the edge of a wing, be also welded with multiple reinforcing gussets, reinforcing gusset is positioned at the center of each connecting hole unit transverse; Between H shaped steel f and H shaped steel e, be welded with a reinforcing H shaped steel a231 parallel with H shaped steel g, between reinforcing H shaped steel a and H shaped steel e, H shaped steel g, be welded with two sections and reinforce H shaped steel b232; Reinforce H shaped steel a, reinforce the web of H shaped steel b and the web isoplanar of H shaped steel e, reinforce H shaped steel a and reinforce vertical setting of H shaped steel b, and between reinforcing H shaped steel a two edges of a wing, the corresponding position that reinforces the H shaped steel b edge of a wing is welded with reinforcing gusset; Between each adjacent H shaped steel of trivet seat, and reinforce H shaped steel a and H shaped steel f junction, reinforcing H shaped steel b and H shaped steel g junction and be all welded with and the isoplanar triangular reinforced steel plate 233 of web.
The 4th described angle brace seat is welded and forms successively by three sections of H shaped steel, and the web of three sections of H shaped steel is in the same plane, and three sections of H shaped steel surround an isosceles right triangle; The H shaped steel o251 one end that is positioned at hypotenuse stretches out, and H shaped steel o two ends are fixedly welded with junction plate, the H shaped steel p252 of close H shaped steel o elongated end one side offers three connecting hole unit on the edge of a wing outwardly, there are four connecting holes each connecting hole unit, and the distance between horizontal, longitudinal two connecting holes is 2a; H shaped steel o is positioned on the elongated end part edge of a wing outwardly and offers one group of two connecting hole of arranging six row, and the distance of horizontal two adjacent connecting holes is a, and the distance of longitudinal two adjacent connecting holes is 2a; H shaped steel o differs from the connecting hole that offers one group of two connecting hole of arranging two row and a group two on the elongated end opposite side edge of a wing outwardly and arrange nine row, and in every group of connecting hole, the distance of horizontal two adjacent connecting holes is a, and the distance of longitudinal two adjacent connecting holes is 2a; The corresponding reinforcing gusset that is welded with inside the edge of a wing of H shaped steel o and other two H shaped steel junctions, the medium position of corresponding every group of connecting hole is also welded with reinforcing gusset inside the H shaped steel p edge of a wing.
The hypotenuse part of described inner fovea part is not established and is enclosed purlin shaped steel, between the cement mixing pile metope of hypotenuse position and the soil layer in foundation ditch outside, is evenly connected with multiple jet mixing stiffening piles 60, and jet mixing stiffening pile is built-in with prestress wire; The jet mixing stiffening pile of each position is connected on capping beam in upper jet mixing stiffening pile end as one group taking upper and lower two, under jet mixing stiffening pile end be connected on the waist rail of cement mixing pile medium position; Described waist rail is horizontally disposed with and is fixedly connected with cement mixing pile, each under jet mixing stiffening pile be connected with same waist rail; Be 25 degree at the angle of upper jet mixing stiffening pile and horizontal plane, under jet mixing stiffening pile and the angle of horizontal plane be 20 degree.
Foundation ditch periphery is squeezed into cement mixing pile 40 downwards, and the capping beam of reinforced concrete structure is built on cement mixing pile top, in capping beam, connects in week and encloses purlin shaped steel 10.
The described purlin shaped steel that encloses is H shaped steel, on the edge of a wing of its both sides, equidistantly offer connecting hole group, each connecting hole group is by two connecting hole cell formations, there are six connecting holes each connecting hole unit, six connecting holes are along enclosing the formal distribution that purlin shaped steel length direction is listed as with two rows three, laterally the distance between two adjacent connecting holes is a, and longitudinally the distance between two adjacent connecting holes is 2a; The two ends of enclosing purlin shaped steel are fixedly welded with junction plate 01, offer four connecting holes with two row's two row formal distributions on junction plate, and the distance between horizontal, longitudinal two adjacent connecting holes is 2a.
Described rebar connector includes L shaped reinforcing bar 701, reinforcing bar in minor face and the capping beam of L shaped reinforcing bar is welded and fixed, end, the long limit coaxial welding of L shaped reinforcing bar has the female reinforcing bar connector 702 that can attachment screw of tool, thereby is connected with reinforcing bar connector and will encloses purlin shaped steel and capping beam is fixed through the screw 703 that encloses purlin shaped steel.
Described trivet seat is general only for the strut of connecting angle brace, and the second described angle brace seat is while connecting angle brace and fish belly sill device conventionally.Wherein said steel strand anchorage, for the steel strand of fish belly sill device are applied to pulling force, makes each web member of fish belly sill produce prestressing force to the cement mixing pile metope of foundation pit side-wall, ensures that body of wall does not firmly tilt or collapses.Described steel strand end is divided into two strands through after guide plate, and one is strained by ground tackle, and another strand is fixed on steel strand fixed head after ground tackle tension.
Claims (1)
1. the angle brace device for pattern foundation pit supporting structure, it is characterized in that: be provided with the inner fovea part of a right-angled trapezium shape at a vertex position place of foundation ditch, described inner fovea part includes a straight flange parallel with the long limit of foundation ditch and becomes 125 hypotenuses of spending with one with the long limit of foundation ditch; This vertex position is provided with 3 groups of angle braces, includes 1 group of sub-thread angle brace and 1 group of two strands of angle brace and 1 group of four strands of angle brace;
Described sub-thread angle brace includes two the first angle brace seats and a strut, the first angle brace seat is bolted and is enclosing on purlin shaped steel, the straight flange of strut and foundation ditch one side and inner fovea part forms an isosceles right triangle, one end of strut and a first angle brace seat are bolted, and between the other end of strut and another the first angle brace seat, are connected with a jack;
Two strands of described angle braces include two the 4th angle brace seats and are connected to two struts between two the 4th angle brace seats, the 4th described angle brace seat is bolted two adjacent enclosing between purlin shaped steel, and the 4th angle brace seat is connected with capping beam by rebar connector; Between two struts, be connected with two channel-section steels, and between channel-section steel and strut, form 30 degree angles;
Four strands of described angle braces include a second angle brace seat, a trivet seat and four struts, described the second angle brace seat and trivet seat are bolted respectively two adjacent enclosing between purlin shaped steel, and the second angle brace seat is connected with capping beam by rebar connector with trivet seat; The second angle brace seat and trivet seat below is supported with respectively crossbeam, and described crossbeam is connected between two cement mixing piles, and crossbeam and enclose purlin shaped steel and be arranged in parallel;
Between four described struts, be evenly connected with 8-10 and connect cover plate, connect cover plate mutually vertical with strut; Between four described struts, be also connected with channel-section steel, each channel-section steel is between two adjacent connection cover plates;
Below four strands of angle braces and two strands of angle braces, be also supported with a public crossbeam, the strut of this crossbeam and four strands of angle braces, two strands of angle braces is perpendicular;
The first described angle brace seat surrounds an isosceles right triangle by three block plate head and the tail successively welding, three block plate intermediate vertical are welded with a stiffener, be positioned on the steel plate of hypotenuse and offer six connecting holes, six connecting holes along hypotenuse length direction with two row's three column distributions, laterally the distance of adjacent two connecting holes is a, and longitudinally the distance of adjacent two connecting holes is 2a; Be positioned on the steel plate of a right-angle side and offer four connecting holes; Four connecting holes are with two row's two column distributions, and distances horizontal, longitudinally adjacent two connecting holes are 2a; And the position deflection that is positioned at six connecting holes on the steel plate of hypotenuse is not offered steel plate one side of connecting hole;
The second described angle brace seat is welded and forms successively by three sections of H shaped steel, and the web of three sections of H shaped steel is in the same plane, and three sections of H shaped steel surround an isosceles right triangle; The H shaped steel i that is positioned at hypotenuse is welded with a H shaped steel h in 1/3 position on the edge of a wing outwardly, and the both ends of H shaped steel h and H shaped steel i are all welded with junction plate; H shaped steel i is positioned at H shaped steel h mono-side and on the edge of a wing, offers 2 group of two connecting hole of arranging four row outwardly, and the distance of horizontal two adjacent connecting holes is a, and the distance of longitudinal two adjacent connecting holes is 2a; H shaped steel i is positioned at H shaped steel h opposite side and offers one group of two connecting hole of arranging 11 row and one group two and arranging six row outwardly on the edge of a wing; Between the web of H shaped steel i inner side and the edge of a wing, be welded with multiple reinforcing gussets, reinforce gusset and be positioned at the position at H shaped steel h two ends, and position between two adjacent groups connecting hole; The H shaped steel j end that is positioned at right-angle side is welded with junction plate, and the H shaped steel j edge of a wing outwardly offers six group of two connecting hole of arranging two row; The end of H shaped steel k and the edge of a wing vertical welding of H shaped steel j next-door neighbour end that are positioned at another right-angle side, the other end of the k of H shaped steel and H shaped steel i are away from one end welding of H shaped steel h; The H shaped steel k edge of a wing outwardly offers three group of two connecting hole of arranging two row; H shaped steel k is welded with a guide plate passing for steel strand near the end position of H shaped steel i, and H shaped steel i is welded with a steel strand fixed head near one end of H shaped steel k; Between H shaped steel i, H shaped steel j and H shaped steel k, be welded with a junction steel plate, the position that junction steel plate is positioned at the second angle brace seat middle part is provided with two steel strand anchorages;
Described trivet seat is welded successively and is formed by three sections of H shaped steel, and the web of three sections of H shaped steel is in the same plane, and three sections of H shaped steel surround an isosceles right triangle; The H shaped steel e two ends that are positioned at hypotenuse stretch out, and end is fixedly welded with junction plate, and a H shaped steel f end that is positioned at right-angle side is also connected with a junction plate; On the edge of a wing of each H shaped steel periphery of described trivet seat, offer connecting hole; On the H shaped steel f edge of a wing, offer six connecting hole unit, there are four connecting holes each connecting hole unit, and the distance in each connecting hole unit between horizontal, longitudinal two connecting holes is 2a; Be positioned on the H shaped steel g edge of a wing of another right-angle side and offer five connecting hole unit; The interlude on the H shaped steel e edge of a wing offers seven connecting hole unit, and the two end portions on the H shaped steel e edge of a wing offers two group of two connecting hole of arranging eight row, and the distance of horizontal two adjacent connecting holes is a, and the distance of longitudinal two adjacent connecting holes is 2a; Between the web of each H shaped steel and the edge of a wing, be also welded with multiple reinforcing gussets, reinforcing gusset is positioned at the center of each connecting hole unit transverse; Between H shaped steel f and H shaped steel e, be welded with a reinforcing H shaped steel a parallel with H shaped steel g, between reinforcing H shaped steel a and H shaped steel e, H shaped steel g, be welded with two sections and reinforce H shaped steel b; Reinforce H shaped steel a, reinforce the web of H shaped steel b and the web isoplanar of H shaped steel e, reinforce H shaped steel a and reinforce vertical setting of H shaped steel b, and between reinforcing H shaped steel a two edges of a wing, the corresponding position that reinforces the H shaped steel b edge of a wing is welded with reinforcing gusset; Between each adjacent H shaped steel of trivet seat, and reinforce H shaped steel a and H shaped steel f junction, reinforcing H shaped steel b and H shaped steel g junction and be all welded with and the isoplanar triangular reinforced steel plate of web;
The 4th described angle brace seat is welded and forms successively by three sections of H shaped steel, and the web of three sections of H shaped steel is in the same plane, and three sections of H shaped steel surround an isosceles right triangle; The H shaped steel o one end that is positioned at hypotenuse stretches out, and H shaped steel o two ends are fixedly welded with junction plate, the H shaped steel p of close H shaped steel o elongated end one side offers three connecting hole unit on the edge of a wing outwardly, there are four connecting holes each connecting hole unit, and the distance between horizontal, longitudinal two connecting holes is 2a; H shaped steel o is positioned on the elongated end part edge of a wing outwardly and offers one group of two connecting hole of arranging six row, and the distance of horizontal two adjacent connecting holes is a, and the distance of longitudinal two adjacent connecting holes is 2a; H shaped steel o differs from the connecting hole that offers one group of two connecting hole of arranging two row and a group two on the elongated end opposite side edge of a wing outwardly and arrange nine row, and in every group of connecting hole, the distance of horizontal two adjacent connecting holes is a, and the distance of longitudinal two adjacent connecting holes is 2a; The corresponding reinforcing gusset that is welded with inside the edge of a wing of H shaped steel o and other two H shaped steel junctions, the medium position of corresponding every group of connecting hole is also welded with reinforcing gusset inside the H shaped steel p edge of a wing;
The hypotenuse part of described inner fovea part is not established and is enclosed purlin shaped steel, between the cement mixing pile metope of hypotenuse position and the soil layer in foundation ditch outside, is evenly connected with multiple jet mixing stiffening piles, and jet mixing stiffening pile is built-in with prestress wire; The jet mixing stiffening pile of each position is connected on capping beam in upper jet mixing stiffening pile end as one group taking upper and lower two, under jet mixing stiffening pile end be connected on the waist rail of cement mixing pile medium position; Described waist rail is horizontally disposed with and is fixedly connected with cement mixing pile, each under jet mixing stiffening pile be connected with same waist rail; Be 25 degree at the angle of upper jet mixing stiffening pile and horizontal plane, under jet mixing stiffening pile and the angle of horizontal plane be 20 degree;
The described purlin shaped steel that encloses is H shaped steel, on the edge of a wing of its both sides, equidistantly offer connecting hole group, each connecting hole group is by two connecting hole cell formations, there are six connecting holes each connecting hole unit, six connecting holes are along enclosing the formal distribution that purlin shaped steel length direction is listed as with two rows three, laterally the distance between two adjacent connecting holes is a, and longitudinally the distance between two adjacent connecting holes is 2a; The two ends of enclosing purlin shaped steel are fixedly welded with junction plate, offer four connecting holes with two row's two row formal distributions on junction plate, and the distance between horizontal, longitudinal two adjacent connecting holes is 2a;
Described rebar connector includes L shaped reinforcing bar, reinforcing bar in minor face and the capping beam of L shaped reinforcing bar is welded and fixed, end, the long limit coaxial welding of L shaped reinforcing bar has the female reinforcing bar connector that can attachment screw of tool, encloses purlin shaped steel, the first angle brace seat, the second angle brace seat, trivet seat and the 4th angle brace seat and is all connected by screw on reinforcing bar connector.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420280742.XU CN203846506U (en) | 2014-05-28 | 2014-05-28 | Angle bracing structure for foundation pit supporting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420280742.XU CN203846506U (en) | 2014-05-28 | 2014-05-28 | Angle bracing structure for foundation pit supporting |
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| CN203846506U true CN203846506U (en) | 2014-09-24 |
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| CN201420280742.XU Expired - Fee Related CN203846506U (en) | 2014-05-28 | 2014-05-28 | Angle bracing structure for foundation pit supporting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981873A (en) * | 2014-05-28 | 2014-08-13 | 德清鑫德机械有限公司 | Angle brace device for supporting of foundation pit |
| CN106065626A (en) * | 2016-08-01 | 2016-11-02 | 中国建筑第八工程局有限公司 | Disengaged foundation pit steel support system |
-
2014
- 2014-05-28 CN CN201420280742.XU patent/CN203846506U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981873A (en) * | 2014-05-28 | 2014-08-13 | 德清鑫德机械有限公司 | Angle brace device for supporting of foundation pit |
| CN103981873B (en) * | 2014-05-28 | 2016-01-06 | 德清鑫德机械有限公司 | A kind of angle brace device for pattern foundation pit supporting structure |
| CN106065626A (en) * | 2016-08-01 | 2016-11-02 | 中国建筑第八工程局有限公司 | Disengaged foundation pit steel support system |
| CN106065626B (en) * | 2016-08-01 | 2018-02-06 | 中国建筑第八工程局有限公司 | Disengaged foundation pit steel support system |
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