Dejavniki, ki vplivajo
- Kateri so glavni dejavniki, ki vplivajo na sidranje konic?
The strength of anchoring materials is crucial. The compressive strength of sulfur anchoring agent must be ≥40MPa; if it is lower than 30MPa, the anchoring force will decrease by 30% - 40%. The water - cement ratio must be controlled within the range of 0.3 - 0.35. The fit gap between the nail hole diameter and the spike should be moderate. An excessively large gap (>3mm) bo sidrno silo zmanjšalo za 20% - 25%, medtem ko pretirano majhna vrzel (<1mm) makes it difficult for the anchoring agent to fill. The optimal gap is 1.5 - 2mm to ensure uniform wrapping force. Insufficient spike embedding depth (<100mm) will reduce the anchoring force by 40% - 50%. The standard embedding depth should be 120 - 150mm, and the embedded part must have threads or barbs to increase mechanical biting force. Insufficient pouring of anchoring agent (voids >5%) bo povzročil lokalno koncentracijo napetosti, nihanje sidra pa doseže 15%- 20%. za izlivanje tlaka za zagotovitev kompaktnosti .
- Kakšne so razlike v sidralni sili med različnimi zasidranimi materiali?
SULFUR SIDRJA AGENT (SULFUR: Cement: pesek=1: 0 . 3: 1 . 5) ima sidrno silo {{3} kn, s hitro nastavitvijo (30 minut), pri {6 {6 {6 {6 {6 {6 {6 {6 { Navadne železnice . sidrna sredstva (epoksi reza + sušenje agenta) ima sidralno silo 80 - 100 kn, z dobrim vremenskim uporom . Sprememba sidrne sile je manjša od ali enaka 10%, ki je višja od - 40 - 60, je 50% {{14} {{14}. agent, preferred for high - speed railways and cold regions. Cement mortar anchoring agent has lower anchoring force (40 - 60kN) but good environmental protection, suitable for urban rail transit. 5% - 8% 膨胀剂 must be added to compensate for shrinkage and avoid anchoring force attenuation. Composite Sidrišča (smola + jeklena vlakna) ima sidrno silo 100 - 120 kn. Ko je vsebnost jeklenih vlaken 3% - 5%, se strižna moč poveča za 25% - 30%, ki se uporablja v ključnih odsekih težkih železnic.
- Kako gradbeni postopek vpliva na sidranje konic?
Incomplete cleaning of nail holes (residual dust >5%) bo zmanjšalo sidrno silo za 15%- 20%. visoke - za čiščenje je treba uporabiti tlačne puške, žične ščetke<130℃ for sulfur anchoring) will lead to poor fluidity and incomplete filling, reducing the anchoring force by 25% - 30%. The pouring temperature must be controlled at 140 - 160℃. A deviation of spike insertion depth >5 mm bo porazdelitev sidrne sile neenakomerno, razlika sidrne sile v isti seriji pa lahko doseže 10% - 15% . orodja za pozicioniranje med vstavitvijo, da se zagotovi enakomerna globina, z odstopanjem, manjšim ali enakim 3mm.}}}}}}<24 hours) will make the anchoring agent strength not up to standard, and the anchoring force is only 70% - 80% of the design value. Resin anchoring agent needs to be cured for more than 48 hours, and sulfur anchoring agent needs to be naturally cooled to room temperature (≥6 hours).
- Kako okoljski dejavniki vplivajo na sidranje konic?
A humid environment will reduce the bonding force between the anchoring agent and the nail hole. When the relative humidity is >90%, the anchoring force decreases by 10% - 15%. Rainy day construction must take rainproof measures to ensure that the nail hole is dry (moisture content ≤5%). A high - temperature environment (≥35℃) will accelerate the curing of resin anchoring agent, and concentrated reaction heat release may cause internal cracking, with an anchoring force loss of 20% - 25%. Retarders must be added to the anchoring agent to extend the gel time to 30 - 40 minutes. Freeze - thaw cycles (- 20 - 20℃) will cause microcracks in the anchoring agent. After 200 cycles, the anchoring force decreases by 30% - 40%. Frost - resistant anchoring agent (adding air - entraining agent, air content 3% - 5%) must be selected in cold regions. Saline - alkaline soil will erode the anchoring agent. When the chloride ion concentration is >500mg/l, sidrna sila vsako leto zmanjša za 5% - 8% . proti korozijsko prevlečeno konico in alkalij
- Kakšni so posebni ukrepi za izboljšanje sidralne sile Spike?
Optimizirajte formulo sidrnega sredstva: dodajanje 5% - 8% grafitnega prahu v srednjo sredstvo za zasidranje žvepla lahko poveča sidrno silo za 10% - 15% in izboljša fluidnost; adding 1% - 2% silane coupling agent to resin anchoring agent enhances the interface bonding force with spikes. Adopt mechanical anchoring assistance: rolling oblique lines (pitch 3 - 4mm) on the spike surface to increase mechanical biting force with the anchoring agent, increasing the anchoring force by 20% Nj Silske sile: 10% konic v navadnih železnicah se vzorči vsaki 2 leti . Tistih, ki imajo sidrno silo, nižjo od 80% oblikovne vrednosti