CN201372436Y - Retaining pile of building foundation pit retaining structure - Google Patents
Retaining pile of building foundation pit retaining structure Download PDFInfo
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- CN201372436Y CN201372436Y CN200920114598U CN200920114598U CN201372436Y CN 201372436 Y CN201372436 Y CN 201372436Y CN 200920114598 U CN200920114598 U CN 200920114598U CN 200920114598 U CN200920114598 U CN 200920114598U CN 201372436 Y CN201372436 Y CN 201372436Y
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- purlin
- built
- fitting
- layer
- foundation pit
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Abstract
The utility model discloses a retaining pile of a building foundation pit retaining structure, comprising: thin-wall cylindrical piles. At least one group of embedded parts welded with connecting reinforcement (4) are embedded on the outer circumferential surfaces (3) of the cylindrical walls (2) of the piles, the embedded parts in each group are embedded at the height of each layer of purlines (6) designed on the piles, and concretes are filled in the part from 0.5-1.5m below the lower surface of each layer of purlines (6) to 0.5-1.5m above the upper surface of each layer of purlines (6) in cylindrical cores (13) of the piles. The retaining pile of the building foundation pit retaining structure has the advantages of safety, environmental-protection, low cost, low waste ratio and capability of guaranteeing the quality of the retaining structure.
Description
Technical field
The utility model relates to a kind of structure of civil engineering, specifically is a kind of fender post of building foundation pit enclosure structure.
Background technology
Along with the continuous expansion that the building underground space is utilized, the scale of excavation of foundation pit and the degree of depth also constantly enlarge.In order to guarantee the safe, economic of excavation of foundation pit, the design of its foundation pit enclosure structure and construction also further obtain paying attention to, and set up the technological package demonstration in industry, have examined and qulity management system, to guarantee the workmanship of excavation of foundation pit.At present, generally adopt following structure in soft clay area excavation of foundation pit space enclosing structure: use bored pile as fender post, on fender post stake top support (beam) in capping beam and the capping beam absolute altitude place is set, at the corresponding water-stop curtain of foundation ditch arranged outside (generally adopting cement mixing pile) and drainage measure etc. is set in foundation ditch, generally also need fender post by foundation ditch one side be provided with one or more layers enclose purlin and with every layer enclose level the enclosing of purlin and support (beam) in the purlin absolute altitude place.
For construction quality and the progress that guarantees this space enclosing structure, prior art is at the construction of the fender post of foundation pit enclosure structure, and many employings are the job practicess of ripe, safe drill-pouring pile as fender post.The diameter of bored pile is according to the cutting depth difference, between 0.8m～1.0m.Its job practices is generally: hole with plant equipment such as rig earlier, need a large amount of mud offs in the process of brill, mud is remained at the ground level of boring, in the mud pit that unnecessary mud suction is dug in advance.Behind the absolute altitude that gets into design, place the reinforcing cage of fender post and, discharge unnecessary slurry coat method simultaneously with sleeve pipe concrete perfusion up at the bottom of the hole, until concrete pouring to ground level.After concrete strength reaches designing requirement, the stake top place of each fender post build the capping beam that connects each fender post and with capping beam absolute altitude place in support.Dig foundation ditch then down, enclose purlin and enclose in the purlin absolute altitude place and support in the foundation ditch installed inside.
The fender post of prior art is that bored pile is solid reinforced concrete pile, and there is following defective in this structure:
Owing to adopt the drill-pouring pile as fender post, need a large amount of slurry coat methods inevitably, and slurry coat method contaminated environment not only also needs to be transported to the locality to handle the back discharging, so the cost of the processing of mud, transportation, discharging is higher, and the energy consumption of boring is also bigger; And mud is also very big to the concrete quality influence, and fender post often presss from both sides phenomenons such as mud, necking down, so the difficult quality guarantee of fender post; Owing to above-mentioned fender post is not scrapped with regard to there being the function effect again after the underground structure of the building of foundation ditch is finished, so the concrete amount of fender post is big more, the cost of excavation of foundation pit is just high more again, and the waste of material is just serious more.
The utility model content
The technical problems to be solved in the utility model is, a kind of safety, environmental protection is provided, cost is low and the waste rate is low and can guarantees the fender post of the building foundation pit enclosure structure of foundation pit enclosure structure quality.
Technical solution of the present utility model is, a kind of fender post with building foundation pit enclosure structure of following structure is provided, it comprises the pile body of thin-walled tubular, be embedded with at least one group of built-in fitting that welds with connecting reinforcement on the outer circumference surface of described pile body barrel, the pre-buried height of every group of built-in fitting is positioned at the every layer of height and position that encloses purlin that designs on the pile body, and the tube in-core of described pile body encloses the 0.5～1.5m of purlin upper surface top to every layer from every layer of soffit below 0.5～1.5m that encloses purlin and is perfused with concrete.
Described every group of built-in fitting comprises that a row goes up among built-in fitting, the row built-in fitting and row built-in fitting down, and every row's built-in fitting comprises highly identical and all is positioned on the outer circumference surface of barrel three built-in fittings by foundation ditch one side.
The pre-buried height of described every group of built-in fitting is positioned at the every layer of height and position that encloses purlin that designs on the pile body and is meant, the height of following built-in fitting is near enclosing the purlin soffit, in the height of built-in fitting near enclosing the purlin upper surface, and go up built-in fitting be higher than enclose the purlin upper surface height dimension more than or equal to the width dimensions that encloses purlin.
The tube in-core of described pile body encloses to every layer from every layer of soffit below 0.5～1.5m that encloses purlin and is perfused with concrete the 0.5～1.5m of purlin upper surface top and is meant, the tube in-core of described pile body encloses the 1m of purlin upper surface top to every layer from every layer of soffit below 1m that encloses purlin and is perfused with concrete.
Concrete steps to the construction of the fender post of the utility model building foundation pit enclosure structure and foundation pit enclosure structure thereof are as follows:
A, on the stake position of the fender post of determining according to designing requirement prefabricated pile crown of discharging, and on pile crown, installing the steel cylinder template with outside the steel cylinder template, described pile crown is provided with the through hole that runs through to steel cylinder tube core from pile crown;
B, with high-frequency vibration hammer pile crown is pressed in the soil together with interior steel cylinder template and outer steel cylinder template and reaches design elevation until pile crown, during pressing down the steel cylinder template and outside in the process of steel cylinder template, the soil body below the pile crown is clamp-oned an in-core of interior steel cylinder template from through hole;
C, on the reinforcing cage of prefabricated thin-walled cylinder pile the welding at least one group of built-in fitting, every layer of height and position that encloses purlin that the position of every group of built-in fitting is designed on this thin-walled cylinder pile;
D, reinforcing cage is placed between steel cylinder template and the outer steel cylinder template;
The concrete of the barrel of e, cast thin-walled cylinder pile and promote synchronously with lifting appliance in steel cylinder template and outer steel cylinder template until the concrete pouring of barrel finish and interior steel cylinder template and outside the steel cylinder template hang fully;
F, after the concrete strength of thin-walled cylinder pile barrel reaches designing requirement, dig down the soil body of the tube in-core of thin-walled cylinder pile, enclose the 1m place, soffit below of purlin until the minimum one deck in position; Clean the thin-walled cylinder pile inwall; The tube in-core from the soil body up fluid concrete to this layer enclose 1m place above the upper surface of purlin; Above process is for irritating core; After core grouted concrete intensity reaches designing requirement, if enclosing to have released on the purlin, this layer encloses purlin, core is irritated at 1m place the tube in-core up bankets the soffit that encloses purlin to last layer from concrete below then again; At this moment, the construction of this fender post is finished;
G, repeating step a～f carry out the construction of next fender post, and constructing until whole fender posts of this foundation pit enclosure structure finishes;
I, in connecting the capping beam of each fender post and capping beam absolute altitude place, the stake top place cast of each fender post supports;
J, dig foundation ditch to fender post down the position that one deck encloses purlin is set, make the built-in fitting that is embedded in this height and position expose on the outer circumference surface of barrel by a side of foundation ditch, welding is used for connecting the connecting reinforcement that encloses the purlin reinforcing bar on the exposed built-in fitting in this position again;
K, with connecting reinforcement with enclose the purlin reinforcing bar binding, again on enclosing the purlin reinforcing bar this layer of colligation enclose the interior bearing bar that supports in the purlin absolute altitude place;
L, enclosing the purlin template and enclosing support shuttering in the purlin absolute altitude place of this height is installed;
M, pour into a mould enclosing purlin and enclosing in the purlin absolute altitude place concrete that supports of this height.
After adopting above structure, the fender post of the utility model cast building foundation pit enclosure structure compared with prior art has the following advantages:
The utility model adopts thin-walled cylinder pile to substitute the fender post that bored pile is made foundation pit enclosure structure, then no longer need mud off, thereby has avoided the problem of mud to the pollution of environment and follow-up transportation, processing, discharging, so environmental protection and reduced cost; Simultaneously, owing to do not have mud to mix in the process of cast fender post,, guaranteed the quality of fender post so avoided fender post often to press from both sides phenomenons such as mud, necking down; And bored pile; the concrete amount of thin-walled cylinder pile is few with respect to same size; and irritate thin-walled cylinder pile setting behind the core and enclose the local bearing strength at purlin place and be not less than bored pile; so thin-walled cylinder pile has been saved concrete and reinforcing bar under the prerequisite that guarantees its intensity; reduced cost, reduced waste.Also since the barrel reinforcing cage of fender post be provided with expose on fender post barrel outer circumference surface can be directly and the built-in fitting that welds of connecting reinforcement, so avoided chiseling in type concrete on the fender post, and then stopped the impaired of reinforcing cage in the damage of fender post and the fender post, so the further quality of assurance fender post.
Every group of built-in fitting is divided into the upper, middle and lower built-in fitting and reaches and the design of enclosing the differing heights position of purlin, makes every group of built-in fitting and connecting reinforcement welding process convenient firmly.
Description of drawings
Fig. 1 is that the side of the maintenance stake of building foundation pit enclosure structure of the present utility model when using analysed and observe the partial structurtes schematic diagram.
Fig. 2 is that the maintenance stake of building foundation pit enclosure structure of the present utility model is overlooked the partial structurtes schematic diagram when using.
Fig. 3 be the maintenance stake of building foundation pit enclosure structure of the present utility model when using enclose the purlin place overlook the partial structurtes schematic diagram.
Fig. 4 is the utility model fender post of building the thing foundation pit enclosure structure and enclose purlin and enclose the structural representation of facing of support joint portion purlin absolute altitude place in.
Fig. 5 is the utility model fender post of building the thing foundation pit enclosure structure and enclose purlin and enclose the plan structure schematic diagram of support joint portion purlin absolute altitude place in.
Shown in the figure 1, pile body, 2, barrel, 3, outer circumference surface, 4, connecting reinforcement, 5, built-in fitting, 5.1, go up built-in fitting, 5.2, middle built-in fitting, 5.3, following built-in fitting, 6, enclose purlin, 7, foundation ditch, 8, enclose the purlin reinforcing bar, 9, enclose in the purlin absolute altitude place and support, 10, capping beam, 11, support 12, water-stop curtain, 13, the tube core in the capping beam absolute altitude place.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Support 11 in capping beam 10 that Fig. 1, Fig. 2, the structural representation when the maintenance stake that Figure 3 shows that building foundation pit enclosure structure of the present utility model is used, its structure comprise fender post, be provided with on fender post stake top and the capping beam absolute altitude place, at the drainage measure of the corresponding water-stop curtain 12 (generally adopting cement mixing pile) of foundation ditch 7 arranged outside and setting foundation ditch 7 in etc.Generally fender post by foundation ditch 7 one sides also be provided with one or more layers enclose purlin 6 and with every layer enclose purlin 6 and enclose one to one in the purlin absolute altitude place and support 9.
As Fig. 4, shown in Figure 5, the fender post of the utility model building foundation pit enclosure structure, it comprises the pile body 1 of thin-walled tubular, be embedded with at least one group of built-in fitting 5 that welds with connecting reinforcement 4 on the outer circumference surface 3 of described pile body 1 barrel 2, described every group of built-in fitting 5 comprises that a row goes up among built-in fitting 5.1, the row built-in fitting 5.2 and row built-in fitting 5.3 down, and every row's built-in fitting comprises highly identical and all is positioned on the outer circumference surface 3 of barrel 2 three built-in fittings by foundation ditch 7 one sides.The pre-buried height of every group of built-in fitting 5 is positioned at every layer of height and position that encloses purlin 6 of design on the pile body 1: the height of following built-in fitting 5.3 is near enclosing purlin 6 soffits, in the height of built-in fitting 5.2 near enclosing purlin 6 upper surfaces, and go up built-in fitting 5.1 be higher than enclose purlin 6 upper surfaces height dimension more than or equal to the width dimensions that encloses purlin 6.Enclose the 0.5～1.5m of purlin 6 upper surfaces top to every layer from every layer of soffit below 0.5～1.5m that encloses purlin 6 in the tube core 13 of described pile body 1 and be perfused with concrete, present embodiment adopts in the tube core 13 of described pile body 1 to enclose the 1m of purlin 6 upper surfaces top to every layer from every layer of soffit below 1m that encloses purlin 6 and is perfused with concrete.
Present embodiment with the specific embodiment that connecting reinforcement 4 is welded on the built-in fitting 5 is, on built-in fitting 5.3 under every row weld horizontal to three connecting reinforcements that are parallel to each other 4, in every row on the built-in fitting 5.2 weld horizontal to three connecting reinforcements that are parallel to each other 4, oblique three connecting reinforcements that are parallel to each other 4 of welding on built-in fitting 5.1 on every row.Again with connecting reinforcement 4 with enclose 8 colligations of purlin reinforcing bar, promptly with the connecting reinforcement 4 of following built-in fitting 5.3 welding with enclose purlin 6 bottoms enclose 8 colligations of purlin reinforcing bar, with the connecting reinforcement 4 of middle built-in fitting 5.2 welding with enclose purlin 6 tops enclose 8 colligations of purlin reinforcing bar, with the oblique connecting reinforcement 4 of last built-in fitting 5.1 welding with enclose purlin 6 bottoms enclose 8 colligations of purlin reinforcing bar.Install again and enclose purlin 6 templates and enclose support 9 templates in the purlin absolute altitude place, cast is at last enclosed purlin 6 and is enclosed in the purlin absolute altitude place and support 9, make all connecting reinforcements 4 all be anchored in the concrete that encloses purlin 6, and the anchorage length of connecting reinforcement 4 is not less than 45 times of connecting reinforcement 4 diameters.
Present embodiment is only enumerated one group of built-in fitting 5 and one deck encloses purlin 6, but is understood that, the utility model can be established many group built-in fittings 5 and the corresponding purlin 6 that encloses of multilayer as required.
Claims (4)
1, a kind of fender post of building foundation pit enclosure structure, it is characterized in that: it comprises the pile body (1) of thin-walled tubular, be embedded with at least one group of built-in fitting (5) that welds with connecting reinforcement (4) on the outer circumference surface (3) of described pile body (1) barrel (2), the pre-buried height of every group of built-in fitting (5) is positioned at every layer of height and position that encloses purlin (6) that pile body (1) is gone up design, encloses above purlin (6) upper surface to every layer from every layer of soffit below 0.5～1.5m that encloses purlin (6) in the tube core (13) of described pile body (1) to be perfused with concrete 0.5～1.5m.
2, the fender post of building foundation pit enclosure structure according to claim 1, it is characterized in that: described every group of built-in fitting (5) comprises that a row goes up among built-in fitting (5.1), the row built-in fitting (5.2) and row built-in fitting (5.3) down, and every row's built-in fitting comprises that outer circumference surface (3) highly identical and that all be positioned at barrel (2) goes up three built-in fittings that lean on foundation ditch (7) one sides.
3, the fender post of building foundation pit enclosure structure according to claim 2, it is characterized in that: every layer of height and position that encloses purlin (6) that the pre-buried height of described every group of built-in fitting (5) is positioned at the last design of pile body (1) is meant, the height of following built-in fitting (5.3) is near enclosing purlin (6) soffit, in the height of built-in fitting (5.2) near enclosing purlin (6) upper surface, and go up built-in fitting (5.1) be higher than enclose purlin (6) upper surface height dimension more than or equal to the width dimensions that encloses purlin (6).
4, the fender post of building foundation pit enclosure structure according to claim 1, it is characterized in that: enclose to every layer from every layer of soffit below 0.5～1.5m that encloses purlin (6) in tube core (13) of described pile body (1) and be perfused with concrete the 0.5～1.5m of purlin (6) upper surface top and be meant, enclose above purlin (6) upper surface to every layer from every layer of soffit below 1m that encloses purlin (6) in the tube core (13) of described pile body (1) and be perfused with concrete the 1m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920114598U CN201372436Y (en) | 2009-03-02 | 2009-03-02 | Retaining pile of building foundation pit retaining structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920114598U CN201372436Y (en) | 2009-03-02 | 2009-03-02 | Retaining pile of building foundation pit retaining structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201372436Y true CN201372436Y (en) | 2009-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920114598U Expired - Lifetime CN201372436Y (en) | 2009-03-02 | 2009-03-02 | Retaining pile of building foundation pit retaining structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201372436Y (en) |
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2009
- 2009-03-02 CN CN200920114598U patent/CN201372436Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091230 |