Have you heard of any published guidelines for frequency of expansion/contraction joints in cast-in-place concrete tunnels?

Thanks to all, i agreed with MR. Yaqoob Abdullah, 

We are not aware of specific published guidelines for expansion and contraction joints spacing for tunnels. This is because the thermal effects are related to the depth of the tunnel, the length of the tunnel, the ventilation in the tunnel, environmental issues, location, etc.... For short tunnels (and the tunnel in question is one of them) the interior temperature is the same as the ambient temperature while the temperature of the exterior face of the walls or the slab is based on the soil cover over them. For shallow tunnels the top slab exterior face temperature could be very close to the ambient temperature while for deep cover or for the walls and the bottom slab the temperature on the outer face could be constant around55F. Therefore, there is a thermal gradient between the inner face and the outer face of the tunnel walls and slabs that the designer should consider. Often no expansion joints are provided in tunnels, only contraction/construction joints30 -50 ft spacing are provided.

If expansion joints are needed, I suggest that careful attention to the waterproofing details should be provided because the joints are usually the source of water infiltration.

you can read BS or ASTM about joints in general case   

Sorry Mr. Shakeel I have not heard of any published guidelines for frequency of expansion/contraction joints in cast-in-place concrete tunnels.

Sorry, I am not in this field, however I have found that ISO has regulations on most subjects

Thermal effects are related to the depth of the tunnel, the length of the tunnel, the ventilation in the tunnel, environmental issues, location, etc...

If expansion joints are needed, I suggest that careful attention to the waterproofing details should be provided because the joints are usually the source of water infiltration.

Sorry . i have not heard MR Shakeel.

Yes! the EUROCODE has all kind of Publications, but also as mentioned the ASTM .