CN2279381Y - Calabash rockbolt - Google Patents
Calabash rockbolt Download PDFInfo
- Publication number
- CN2279381Y CN2279381Y CN 96219640 CN96219640U CN2279381Y CN 2279381 Y CN2279381 Y CN 2279381Y CN 96219640 CN96219640 CN 96219640 CN 96219640 U CN96219640 U CN 96219640U CN 2279381 Y CN2279381 Y CN 2279381Y
- Authority
- CN
- China
- Prior art keywords
- calabash
- rockbolt
- cucurbit
- anchoring
- anchoring body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a calabash rockbolt, and an anchoring body is formed into integration by pouring concrete and a steel strand (a steel bar or a steel pipe). The utility model is characterized in that the anchoring body is in a serial calabash shape, each calabash is in a garlic shape, and the spacing among each calabash is 0.3 meter to 3 meters. The cross section of an anchoring section of the calabash rockbolt is enlarged, so the connecting angle area of the rockbolt and stratum which has stretching resistance is enlarged. Under the condition that the diameter of the utility model is equal to the diameter of a cylindrical anchoring body, the maximum anchoring force can be improved by a plurality of times. Under the condition of same total tension, the adoption of the calabash rockbolt can reduced the number of root and the length of the anchoring body, and the utility model has the advantages of material saving, quicker progress, shorter construction period and lower cost. So the utility model is suitable for areas with various qualities of soil and areas which are unsuitable for providing a long rockbolt.
Description
The utility model belongs to a kind of concrete spouting anchorage element in underground making.
The anchor pole that uses in the foundation ditch slope protection construction of building foundation is generally cylindrical, and the anchor pole bottom that also has is an enlarged footing, is formed by concrete pouring.Along with middle-high building increasing gradually, the quantity of foundation ditch and the degree of depth and increasing sharply, safeguard the slope protection pile and the anchor pole of foundation ditch, in foundation pit construction, occupy a large number of, particularly prevent the anchor pole that foundation ditch collapses and collapses, sometimes need design the 1-3 layer, the ratio that accounts in foundation pit construction is very big, and cost, workload, duration, the engineering cost of foundation ditch all are significantly increased.
The purpose of this utility model is a kind of novel Calabash rockbolt of design, changes the cross sectional shape of existing anchor pole, reaches the resistance to plucking ability that increases anchoring body, to reduce anchor pole radical and length, reduces the anchor pole cost, the reduction of erection time, reduces engineering cost.
Calabash rockbolt of the present utility model, by non-anchoring section, anchoring body, formed by the reinforcing bar of pulling force, non-anchoring section is a direct rod shape, it is characterized in that: the anchoring body bunchiness Pear-Shaped that forms by concrete and the bar pouring that is subjected to pulling force, each cucurbit is head of garlic shape, interval between each cucurbit is at 0.3-3 rice, and first cucurbit is arranged on the non-anchoring section of distance end greater than 1.5 meters, and the reinforcing bar that the annular locator fixedly is subjected to pulling force is set between each cucurbit.
The cucurbit maximum radius of described Calabash rockbolt enlarges the 30-1000 millimeter than cylindrical radius.
The diameter of the cucurbit of described anchoring body can be equal up and down, is the cucurbit shape, or up-small and down-big, is pagoda shape.
The described reinforcing bar of pulling force that is subjected to can use steel strand or steel pipe.
Production method of the present utility model is, earlier with Calabash rockbolt drill bit drilling and forming hole, adopt mud off, be drilled into the soil property area of designing requirement, carry out reaming bunchiness cucurbit shape, clear then hole is to meeting the requirements, steel strand (or reinforcing bar, steel pipe) are tied locator, be coated with butter or install plastic bushing at columniform non-anchoring section, put into Calabash rockbolt boring, press cement grouting to become anchoring body.
Calabash rockbolt of the present utility model adopts increasing section at anchoring section, anchor pole and resistance to plucking stratum contact area are increased, with cylindrical anchoring body diameter same case under, its ultimate pullout capacity can improve several times, under the identical situation of total pulling capacity, adopts Calabash rockbolt can reduce the radical and the length of anchoring body, economical with materials, the quickening progress, reduction of erection time, reduction expense.Compare with cylindrical anchor pole, the more reasonable stress of Calabash rockbolt, stability is better, is applicable to that various soil properties area and the area that long anchor pole should not be set and other need the facility of anchoring.
Below in conjunction with drawings and Examples Calabash rockbolt is described further.
Fig. 1 is the structural representation of Calabash rockbolt
Fig. 2 is the structural representation of pagoda shape for the cucurbit of Calabash rockbolt is up-small and down-big
As shown in Figure 1, a kind of Calabash rockbolt, by non-anchoring section 1, anchoring body 2, formed by the reinforcing bar 4 of pulling force, non-anchoring section is a direct rod shape, it is characterized in that: by the anchoring body bunchiness Pear-Shaped that concrete and the bar pouring that is subjected to pulling force form, each cucurbit 3 is head of garlic shape, and the interval between each cucurbit is at 0.3-3 rice, first cucurbit is arranged on the non-anchoring section of distance end greater than 1.5 meters, and the reinforcing bar 4 that annular locator 5 fixedly is subjected to pulling force is set between each cucurbit.
The cucurbit maximum radius of Calabash rockbolt enlarges the 30-1000 millimeter than cylinder radius.
As shown in Figure 2, the diameter of the cucurbit of anchoring body can equate up and down, is cucurbit string shape, and is also up-small and down-big, is pagoda shape.
Among the figure: the 7-I-steel, the 8-nut, the 9-slope protection pile, 6-is the cylindrical anchoring body that reduces.
Claims (5)
1, a kind of Calabash rockbolt, by non-anchoring section, anchoring body, formed by the reinforcing bar of pulling force, non-anchoring section is a direct rod shape, it is characterized in that: the anchoring body bunchiness Pear-Shaped that forms by concrete and the bar pouring that is subjected to pulling force, each cucurbit is head of garlic shape, interval between each cucurbit is at 0.3-3 rice, and first cucurbit is arranged on the non-anchoring section of distance end greater than 1.5 meters, and the reinforcing bar that the annular locator fixedly is subjected to pulling force is set between each cucurbit.
2, Calabash rockbolt as claimed in claim 1 is characterized in that: the cucurbit maximum radius of described Calabash rockbolt enlarges the 30-1000 millimeter than cylinder radius.
3, Calabash rockbolt as claimed in claim 1 is characterized in that: the diameter of the cucurbit of described anchoring body equates up and down, is Pear-Shaped.
4, Calabash rockbolt as claimed in claim 1 is characterized in that: the diameter of the cucurbit of described anchoring body is up-small and down-big, is pagoda shape.
5, Calabash rockbolt as claimed in claim 1 is characterized in that: described to be subjected to the reinforcing bar of pulling force be steel strand or steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96219640 CN2279381Y (en) | 1996-10-15 | 1996-10-15 | Calabash rockbolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96219640 CN2279381Y (en) | 1996-10-15 | 1996-10-15 | Calabash rockbolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2279381Y true CN2279381Y (en) | 1998-04-22 |
Family
ID=33900187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96219640 Expired - Fee Related CN2279381Y (en) | 1996-10-15 | 1996-10-15 | Calabash rockbolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2279381Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132516A (en) * | 2011-11-30 | 2013-06-05 | 兰州大学 | Bead type tubular anchor rod |
-
1996
- 1996-10-15 CN CN 96219640 patent/CN2279381Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103132516A (en) * | 2011-11-30 | 2013-06-05 | 兰州大学 | Bead type tubular anchor rod |
| CN103132516B (en) * | 2011-11-30 | 2015-05-13 | 兰州大学 | Bead type tubular anchor rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |