DE2130765C2 - Device and method for producing the grouting body of a grouting anchor - Google Patents

Description

10. Device according to one of claims 1 cuff valve are pressed independently, to 5, characterized in that the Verpreß- disadvantage of this method is that it is through the Openings (31) of one, the respective compression multiple installation and retraction of the packer line (30) surrounding cuff (32) 50 as well as the washing required in the meantime are covered, the ends of which are radially to that of the sleeve pipes extraordinarily Arbeitsaufwen-Verpreßleitung (30) extending valve-like dig is. Furthermore, the is also liable for this procedure Form nose (33). Disadvantage that the individual compression openings only

11. Process for producing the Verpreß- can be pressed one after the other, if one body of a grouting anchor using 55 precise control of the grouting result for each of the device according to one of claims I grouting opening is required. This increases the bit 10, characterized in that the total grouting time of a grouting anchor is considerable, pressing each pressing portion by the object of the invention is to provide a possibility Both grouting lines are carried out at the same time and create this targeted, repeated grouting that then the injection lines in the 60 of injection anchors, especially in cohesive soils, Be cleaned run. to be able to accomplish safer and faster than

12. Method for producing the Verpreß- so far.

body of a grouting anchor using this task is in a device of the one Device according to one of the claims 1 initially specified type according to the invention thereby to 10, characterized in that both the 65 solved that for each pressing section two on the earth side Grouting and cleaning of the grouting lines connected to one another take place in the run. are seen together in the relevant compression section at least one injection opening

3 4

point. In this case, at the air-side end of a compression Fig. 6, a cross section through a compression

Press line a Durchflußregulierventii arranged anchor with representation of the Verpreßaustrittsöffnungen

be. ^m another Aüsführungsform.

Furthermore, a compression line can all compression In the embodiment of Figure 1 is common in sections srin; It is also possible for a plurality of the schematically illustrated borehole 1 to be combined into injection lines in one or more multi-channel lines which are not shown for the sake of simplicity. Finally, tension members can be used and all of the borehole 1 or part of the lines can be filled with a cement mortar. There is now the bypass valves to be connected to one another. would give the floor along the grouting section V.

The lines can be single or multiple ring- "> Injection of grouting material to compress

shaped around the tension member of the grouting anchor - a higher adhesion between Verpreßköiper 2 and

be led. The turns of the ring can reach the bottom.

Lines in planes perpendicular to the tension member axis For this purpose, two are in the borehole 1

or grouting line leading to each grouting section V on a helical line around the tension member axis

Against. The outlet openings are expediently introduced at 3, 4. Referring to Fig. 1, there are two

wise on the outer boundary line of the individual injection lines 3 and 4 on their earth-side

Ring linesi arranged end 6 connected to one another; along the

The outlet openings can also be from press cut V , press openings 5 are attached.

ciner arranges the cuff surrounding the injection line.

be covered, the ends of which are radially to the a ° For pressing, both ends on the air side

Verpreßleituag extending, valve-like nose forms the injection lines 3 and 4 on a common

According to the method according to the invention, the compression head 7 is connected. The grouting material

worked in such a way that the pressing of each pressing 10 occurs in the direction of arrow 8 in the pressing

section through both injection lines head 7 and through the injection openings 5 in the

takes place at the same time and subsequently the veras floor or other cavities. The pressure

pressure lines can be cleaned in the flow or can be observed via a pressure gauge 9,

that both the grouting and cleaning. The grouting pressure compacts the soil;

of the injection lines are carried out in the flow. the resulting cavities are pressed

The advantage of the device according to the invention material 10 filled. After finishing a grouting primarily to be seen in the fact that a possible phase, the compression head 7 is removed and in One end of the line water for flushing the line section was pumped in around the individual grouting along the grouting section of a grouting system. The water entry is at 11 Press anchors as often as desired and in any number of rows and the water outlet indicated at 12. The flow sequence also at the same time, flawlessly to the direction can of course also vice versa can. There will be less emphasis on a 35 if possible.

far-reaching and complete penetration of the In F i g. 2 shows a modified principle. The ground is laid with grouting material, but here is the grouting line 13 under the intermediate shell Degree of consolidation of the soil around the attachment of a manometer 15 to a pump 16 anchoring section aimed at. Increasing grouting closed while the grouting line 14 was also pressing show the degree of loss of capacity 40 a manometer 17 has, but about a improvement of the soil. Flow regulating valve 18 and a connecting line

Another advantage of the device according to the 19 in a container 20 with molding material 10 mün-

finding is that a grouting anchor that det. From the container 20 a line 21 leads to

despite all caution because of a weak zone in the pump 16.

Soil fails when tightening, not abandoned 45 During the pressing operation, the container 20 has to be removed, but through a subsequent injection it can still be brought to its full load-bearing capacity via the line 21 in the direction of the arrow 23. molding material creates sucked and 10 on the ^Ver P ^ress -The invention further condition the line 13 pressed. When the flow is closed so that the full amount of the stretching penetrates along the entire anchoring regulating valve 18, a uniformly high injection pressure can be built up through the injection openings 5, so that a uniformly good penetration of the soil is possible. The adhesion displayed on the manometer 17 along the entire anchoring section pressure then corresponds to that which arises at the injection opening 5 which is closest to the load-bearing capacity of the injection anchor. Is decisively influenced. the flow regulating valve 18 partially or completely "In the drawing, exemplary embodiments of FIG. 55 are open, so the device for cutting into the ground is shown according to the invention.

F i e 1 a schematic longitudinal section through a running quantity after the pressing and piping

Embodiment of the device according to the resistance. This means that the pump is independent of the pump

finding with a compression section, regulation of the compression pressures or compression

FIG. 2 a schematic longitudinal section through 60 possible. The one attached to the pump outlet

Another embodiment with a compression manometer 15 gives the respective reference pressure

section ^ ^-

FIG. 3 shows a schematic longitudinal section through After completion of the compression phase, how

an embodiment with three compression sections, above in FIG. 1 described, water for

4 different examples of the pipe system in multi-chamber sinks with the through-pipe open combined injection lines, flow regulating valve 18 pumped in. Water inlet and

F i κ 5 a cross section through the grouting anchor-outlet are again indicated by arrows 23 24-

with representation of the compression outlet openings and tet. This arrangement of the injection lines 13, 14

5 ⁶

has the advantage that the νε _φΓ εβπΐ3ΐεΓΪ3ΐ 10 is split into the pressed body 2 by tensile forces and,. · 'J_ D "..» ".,""Ki"; hf and Wpinp Ver the passage of the grouting material 10 m is predetermined

reßmateri

! Astira ^{remains and no} ver- s ^ s ^ i ^^ t ^^^

£ Ä Sn ^ ₁ g 1 and 2 only schematically and it is achieved that the grouting material 10 simply indicated grouting lines 3, 4, 13, 14 5 emerges at precisely defined points and the Aufi μ; ; Pi ι Herenem any pressure does not become too high. The Verpreßoffnun-

However, νίηε ^ εΓηη ^ Α νε _φΓ εΒΐ will not re-enter the νεφπ ^ ΐεΐ ^ εα

can this Verpreßleitungon in io can. Since the pressing process usually combines several, many possible combinations in order to take place one after the other at the same point.
line for several VeφΓeßlinien with νεφΓββ- with centrally lying tension members 25 (Fig. 5,

Openings S may be provided. These injection lines 15 can be provided with the νεφΓεΒοί & ηι ^ βη 27 can also be partially or completely connected to one another by one-way valves or ring line 26 at one or more points. the tension member 25 be laid around. This ring is _f

In Fi g. 4 are some examples of such comparison 26 is connected to the _νεφ Γ εΒ1εηταη ₈ εη 3, 4 shown Preßleitungen connected to Mehrkamn ^ rofiten _νεφ Γ εΒο _"ηωι Ε βη 27 smd over the entire Ummiteinander. In this case arranged expedient fang 20 is distributed so that the bursting de: dividing the mäßigerweis8 tegende in Ζεηίηιΐη νεφΓεΒ- νεφΓεΒΚφβπ, 2 and the outlet of the Verpreßguü can and the annular outer 10 were as Hinteitung at its weakest point 28 around angeordn _e th νεφΓεΒΙεητ ^ εη as back- Here is essentially ^ n radial νβφΓββΐ.
Lines with the νβφΓεβοδηυ ^ εη used. The external tension members 29 and central

είηζεΐηεη VeφΓeßlεitungen can also different a ₅ angeordn8t8r Veφreßlεitung take 30 b8sitzt the VerpreB _e ne tasks. You can beispiels- division 30 \ ^ reßöffnun _ge n 31 of a Man as the νεφΓε55εη, washing, d8r bundling veered are abged8ckt 32nd This creates a valve-like nose, a weakening zone, on the lunar of wires and as a protective chamber for this kind of thing.

Particular importance is also the νεφΓεβ- 3 ° in νεφΓεβ φβΓ ^ 2, so that by deniV ^ preßdrucl openings 5 to which it ER- the _νεφ Γ εβπΐ3ΐεπ3ΐ 10 there acts Aufspren _ge nb _e and the Verpre possible to ^ at the shortest way to the material 10 between two tension members 29 hmdurcl feet between the νεφΓβΒΚφβΓ 2 and the exit. The lips in the area of the nose 3; To get to the bottom. To do the νεφΓεβοδηυη- are ausgestatet that they only Drucl gen 5 entw _e the open in close proximity to the floor joint 35 of ίηηεη ago and thus only νεφΓεβπ ^ βΓΠΐ lie or it must be ensured that the comparison 10 in a Direction through8n.

For this purpose 2 sheets of drawing 8n

Claims (9)

The invention relates to a device claims: and em method for producing the pressing 1. Device for producing the compression body of one or more tension members on body a grouting anchor having one or more tension members, in particular one pointing grouting anchor, in particular a 5 in cohesive soil, consisting of an air-side those in cohesive soil, consisting of one with grouting material, e.g. B. cement slurry, on the air side with grouting material, e.g. B. cement-sendable injection pipe, the earth-side injection slurry, chargeable injection line, which has openings in the ground. side has compression openings, as a result of which it is known for producing the compression body marked that. for each grouting ίο (magazine »Baumaschine und Bautechnik«, 1966, section (V, V ₁ , K ₂ etc.) two grouting lines connected to each other by drilling (3, 4; 13 Here, up to the final depth 14; 30) are provided, which together have compression opening (5, 27, 31) at the air-side end in the advanced drill pipe, after at least one compression section has been installed in this. 15 put a compression head and the bottom through 2. Apparatus according to claim 1, characterized in that this drill pipe is pressed through by the drill characterizing that at the air-side end of a tube is gradually withdrawn in order to keep the two injection lines (3, 4; 13, 14) a not yet compressed section of the Flow regulating valve (18) is arranged. To release the borehole. A disadvantage of this process 3. Apparatus according to claim 1 or 2, that »° _re ns is that the pressing process only once and only characterized in that one of the Verpreß- in a prescribed order, namely from the lines of all the pressing sections (V ₁ , V, K. ) The bottom of the borehole is common towards the air side. "can be performed. Furthermore, there is a risk that 4. Apparatus according to claim 3, characterized in that the grouting material instead of being drinked into the ground that several injection lines in as gene, between the borehole wall and the outer surface of the jacket a multi-channel line or several multi-pipe rises and uncontrolled in sewer lines are grouped together. gives way to other soil horizons 5. Device according to one of claims 1 To also with soils not injectable per se, to 4, characterized in that all or especially in cohesive soils, secure anchoring It is known to achieve part of the grouting solutions with one-way rings (»Schweizerische valves are interconnected. Bauzeitung «, 1970, pages 921 to 929), the floor 6. Device according to one of claims 1 in sections and repeatedly using to 5, characterized in that the compression high compression pressures to blow open and it up lines in the form of ring lines (26) to enforce in this way or with grout the tension member (25) of the grouting anchor around 35 to compress it and carry out a larger one are. to reach knife of the grout. To this 7. Apparatus according to claim 6, characterized in that, after completion of the borehole in indicates that the ring lines (26) inserted into this a sleeve tube, the wall of which Tension member axis are perpendicular planes. at axial intervals with distributed around the circumference 8. The device according to claim 6, characterized in that there are 40 holes, the outside of which are elastic indicates that the ring lines (26) are covered on rings, which check valves lie on a helical line. for the compression that is pressed through these openings 9. Device according to one of claims 6 form molding material. Through one in this manbis 8, characterized in that the Verpreß- cuff pipe inserted double packer, the Openings (5,27) on the outer circumference of the individual 45 each have one, a ring of outlet openings on-ring lines (26) are arranged. pointing, pipe section limited, can now any